Change embedding model to embeddinggemma and fix ChromaDB initialization

- Switch from nomic-embed-text to embeddinggemma for embeddings
- Add directory verification cells to ensure required directories exist
- Add error handling for corrupted ChromaDB databases with auto-recovery
- Create persist directories before ChromaDB initialization
This commit is contained in:
schwartz1375
2025-12-06 16:59:15 -05:00
parent 563737641a
commit 6c257ebab0
2 changed files with 252 additions and 208 deletions
+205 -178
View File
@@ -18,10 +18,10 @@
"\n",
"```bash\n",
"ollama pull gemma3\n",
"ollama pull nomic-embed-text\n",
"ollama pull embeddinggemma\n",
"```\n",
"\n",
"> These models will be used for generation (`gemma3`) and embeddings (`nomic-embed-text`).\n",
"> These models will be used for generation (`gemma3`) and embeddings (`embeddinggemma`).\n",
"\n",
"---\n",
"\n",
@@ -30,7 +30,7 @@
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@@ -39,7 +39,7 @@
"'\\n!pip install --upgrade pip --quiet\\n!pip install -U langchain langchain-ollama langchain-community langchain-core langchain-experimental chromadb pandas pymupdf ipython duckduckgo-search --quiet\\n'"
]
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@@ -66,7 +66,7 @@
"ollama list\n",
"```\n",
"\n",
"This should list both `gemma3:latest` and `nomic-embed-text:latest` models."
"This should list both `gemma3:latest` and `embeddinggemma` models."
]
},
{
@@ -77,7 +77,7 @@
"\n",
"### Ollama (Local Execution)\n",
"\n",
"Ollama allows you to run open-source models (e.g., `gemma`, `llama`, `nomic-embed-text`) locally. This provides control, privacy, and fast iteration without API latency or cost.\n",
"Ollama allows you to run open-source models (e.g., `gemma`, `llama`, `embeddinggemma`) locally. This provides control, privacy, and fast iteration without API latency or cost.\n",
"\n",
"### Amazon Bedrock (Cloud Execution)\n",
"\n",
@@ -305,7 +305,7 @@
"\n",
"Embeddings are numeric vectors that represent semantic meaning. They are used for similarity search in vector stores.\n",
"\n",
"- **Local**: e.g., `nomic-embed-text` via Ollama\n",
"- **Local**: e.g., `embeddinggemma` via Ollama\n",
"- **Cloud**: e.g., Titan via AWS Bedrock, HuggingFace SentenceTransformers\n",
"\n",
"---\n",
@@ -342,32 +342,37 @@
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"Okay, let's talk about why the sky is blue! It’s a really fascinating phenomenon, and the short answer is due to something called **Rayleigh scattering**. Here’s a breakdown:\n",
"That's a fantastic question! The blue color of the sky is a really cool phenomenon, and it's all thanks to something called **Rayleigh scattering**. Here’s a breakdown of how it works:\n",
"\n",
"**1. Sunlight and Colors:**\n",
"\n",
"* Sunlight appears white, but it’s actually made up of all the colors of the rainbow – red, orange, yellow, green, blue, indigo, and violet. Think of a prism splitting light.\n",
"* Sunlight isn't actually white. It's made up of *all* the colors of the rainbow – red, orange, yellow, green, blue, indigo, and violet. Think about a prism splitting sunlight.\n",
"\n",
"**2. Entering the Atmosphere:**\n",
"**2. Scattering of Light:**\n",
"\n",
"* When sunlight enters the Earth’s atmosphere, it bumps into tiny air molecules (mostly nitrogen and oxygen).\n",
"* As sunlight enters the Earth's atmosphere, it collides with tiny air molecules (mostly nitrogen and oxygen).\n",
"* This collision causes the light to scatter in different directions. This scattering is what makes the sky appear blue.\n",
"\n",
"**3. Rayleigh Scattering – The Key!**\n",
"**3. Rayleigh Scattering – The Key:**\n",
"\n",
"* **Rayleigh scattering** is the scattering of electromagnetic radiation (like light) by particles of a much smaller wavelength. In this case, the air molecules are much smaller than the wavelengths of visible light.\n",
"* **Shorter wavelengths scatter more:** Crucially, blue and violet light have shorter wavelengths than other colors. This means they are scattered *much* more strongly by these air molecules. It’s like throwing a small ball (blue light) against a bumpy surface – it bounces off in all directions. A larger ball (red light) would be less affected."
"* **Rayleigh scattering** is *more effective* at scattering shorter wavelengths of light. Blue and violet light have shorter wavelengths than other colors like red and orange.\n",
"* Because blue and violet light are scattered much more strongly, they bounce around in all directions throughout the atmosphere.\n",
"\n",
"**4. Why Not Violet?**\n",
"\n",
"* You might wonder, “If violet light scatters even *more* than blue, why isn't the sky"
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"text/markdown": [
"Okay, let's break down LummaC2 – it's a pretty nasty piece of malware that's been making waves in the cybersecurity world. Here's a step-by-step breakdown:\n",
"Okay, let’s break down LummaC2.\n",
"\n",
"**1. What is LummaC2?**\n",
"**LummaC2: A Sophisticated, Multi-Stage Cyber-Espionage Tool**\n",
"\n",
"LummaC2 (also known as \"NightSky\") is a sophisticated, multi-stage cyber espionage malware developed by the North Korean Lazarus Group. It’s a Command and Control (C2) infrastructure, meaning it’s the backbone of a cyberattack. It’s *not* a standalone virus that directly infects systems. Instead, it’s used to control and coordinate other malware that *does* infect systems.\n",
"LummaC2 (formerly known as “TRASH”) is a highly advanced, modular cyber-espionage tool developed by the Russian-linked APT group known as “Vandyr.” It’s significantly more complex than many common malware families, making it a particularly concerning threat. Here’s a breakdown of what makes it notable:\n",
"\n",
"**2. Key Characteristics & Functionality:**\n",
"**1. Modular Architecture:** This is the key differentiator. Unlike many malware families that are single, monolithic programs, LummaC2 is built around a modular design. This means it’s comprised of several distinct components, each performing a specific function. These modules work together to achieve the overall goal of espionage. This modularity provides several advantages to the attackers:\n",
"\n",
"* **Multi-Stage Architecture:** This is the most critical aspect. LummaC2 operates in three distinct stages:\n",
" * **Initial Access:** Typically, LummaC2 gains initial access through phishing emails containing malicious documents (often Microsoft Office documents). These documents contain macros that, when enabled, trigger the download and execution of the initial LummaC2 components.\n",
" * **Beaconing & Data Exfiltration:** Once established, LummaC2 establishes a persistent connection (a \"beacon\") to a command server. It then gathers intelligence – usually targeting organizations in the finance, technology, and defense sectors. This intelligence can include sensitive information, intellectual property, and strategic planning details.\n",
" * **Secondary Malware Deployment:** This is where it gets really dangerous. LummaC2 doesn't just collect data; it *actively* deploys secondary malware, often Cobalt Strike, to further compromise the victim’s network, spread laterally, and escalate privileges.\n",
"\n",
"* **Advanced Techniques:**\n",
" * **Dynamic DNS:** LummaC2 utilizes dynamic DNS services to constantly change its C2 server addresses, making it incredibly difficult to track and block.\n",
" * **SSL/TLS Encryption:** Communication between the beaconing agents and the C2 server is heavily encrypted using SSL/TLS, further obscuring the activity.\n",
" * **Staged Downloads:** The malware is broken down into smaller, encrypted modules which are downloaded sequentially, making detection harder.\n",
" * **Use of Cryptocurrency:** The group uses cryptocurrency (primarily Bitcoin) to pay for services and to facilitate the exfiltration of stolen data.\n",
" * **Flexibility:** Attackers can easily swap out modules, allowing them to quickly adapt to new environments and targets.\n",
" * **Stealth:** The modular design makes it harder for security analysts to identify and understand the entire scope of the attack.\n",
" * **Persistence:** Multiple modules can ensure the malware remains active even if one component is detected and removed.\n",
"\n",
"\n",
"**3. Why it’s a Threat:**\n",
"**2. Stages of Operation (Typical Lifecycle):** LummaC2 generally operates through several stages:\n",
"\n",
"* **Sophisticated Threat Actor:** It's operated by the Lazarus Group, a well-known and highly skilled cyber espionage unit affiliated with the North Korean government. They're known for operations like the WannaCry ransomware attack and the Sony Pictures hack.\n",
"* **Espionage Focused:** LummaC2's primary goal isn't typically financial gain (though that's a byproduct); it’s about gathering intelligence for strategic advantage.\n",
"* **Ongoing Activity:** LummaC2 is still actively being used in attacks, meaning organizations need to remain vigilant.\n",
"\n",
"**4. AWS Relevance (as your AI assistant to AWS):**\n",
"\n",
"* **Threat Intelligence Integration:** AWS services like GuardDuty and Security Hub regularly ingest threat intelligence feeds that include information about LummaC2. You can configure these services to automatically detect and alert you to activity associated with LummaC2.\n",
"* **Network Security:** Ensure your VPCs, EC2 instances, and other AWS resources are properly configured with security groups and network ACLs to restrict inbound and outbound traffic, limiting the potential for LummaC2 to establish a beacon.\n",
"* **Monitoring & Logging:** Enable comprehensive logging and monitoring across your AWS environment to detect suspicious activity. Analyze logs for unusual patterns of communication.\n",
" * **Initial Access:** This could involve phishing emails, compromised websites, or exploiting vulnerabilities in software. They have been observed utilizing various techniques.\n",
" * **Beaconing:** Once inside a network, LummaC2 establishes a persistent connection (a \"beacon\") back to the command-and-control (C2) server. This beacon allows the attackers to remotely control the infected system.\n",
" * **Data Exfiltration:** The core espionage function. LummaC2 is designed to steal sensitive data. It targets specific data based on the targets' profiles – government agencies, defense contractors, and critical infrastructure are frequently targeted.\n",
" * **Credential Theft:** LummaC2 actively attempts to steal credentials (usernames, passwords, etc.) to maintain access and escalate privileges.\n",
" * **Lateral Movement:** After establishing initial access, LummaC2 attempts to move laterally through the network to gain access to more systems and data.\n",
"\n",
"\n",
"---\n",
"**3. Key Features & Technical Details:**\n",
"\n",
" * **Multi-Protocol C2:** It uses multiple protocols (HTTP, HTTPS, DNS) for communication with its C2 server. This makes it harder to detect by blocking only one protocol.\n",
" * **Dynamic DNS:** To avoid being blocked, LummaC2 uses dynamic DNS services to ensure the C2 server’s address remains consistent.\n",
" * **PowerShell-based Modules:** A significant portion of its functionality relies on PowerShell, which allows for deep integration with Windows systems.\n",
" * **Anti-Analysis Techniques:** LummaC2 employs techniques to evade detection during analysis, such as process injection and obfuscation.\n",
"\n",
"**4. Threat Intelligence & Targets:**\n",
"\n",
" * **Russian-linked APT:** Almost exclusively attributed to Vandyr, a group often associated with Russian intelligence services.\n",
" * **High-Value Targets:** Primarily focuses on government, defense, and critical infrastructure sectors. Specific targets have included defense contractors and organizations dealing with sensitive information.\n",
"\n",
"\n",
"\n",
"**Resources for Further Research:**\n",
"\n",
"* **CrowdStrike Report:** [https://www.crowdstrike.com/blog/lumma-c2-ransomware-variant-or-cyber-espionage-tool/](https://www.crowdstrike.com/blog/lumma-c2-ransomware-variant-or-cyber-espionage-tool/) (CrowdStrike’s detailed analysis)\n",
"* **Unit 42 Blog:** [https://unit42.paloaltonetworks.com/lumma-c2-cyber-espionage-tool/](https://www.unit42.paloaltonetworks.com/lumma-c2-cyber-espionage-tool/) (Palo Alto Networks’ analysis)\n",
"\n",
"\n",
"Do you want me to delve deeper into a specific aspect of LummaC2, such as:\n",
"\n",
"* Its technical details (e.g., the malware's architecture)?\n",
"* How to detect it on AWS?\n",
"* Specific tactics, techniques, and procedures (TTPs) used by the Lazarus Group?"
"* Its C2 communication protocols?\n",
"* Specific techniques used to evade detection?\n",
"* How it compares to other cyber-espionage tools?"
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"Okay, to help you determine which industry was primarily targeted by this malware, I need some information about the malware itself. Please tell me:\n",
"Please provide me with the details about the malware you’re referring to. I need information like:\n",
"\n",
"* **What is the name of the malware?** (e.g., WannaCry, NotPetya, Emotet, etc.)\n",
"* **What are its key characteristics?** (e.g., ransomware, banking trojan, spyware, etc.)\n",
"* **What is its primary method of infection?** (e.g., phishing emails, exploited vulnerabilities, drive-by downloads, etc.)\n",
"* **What are the known targets or affected sectors?** (e.g., hospitals, manufacturing, finance, government, etc.)\n",
"* **The name of the malware:** (e.g., WannaCry, NotPetya, Emotet, etc.)\n",
"* **A description of its behavior:** (e.g., ransomware, botnet, phishing tool, etc.)\n",
"* **Any known indicators of compromise (IOCs):** (e.g., IP addresses, domain names, file hashes)\n",
"* **Any reports or analysis you have about it.** \n",
"\n",
"The more detail you can provide, the more accurately I can pinpoint the industry that was primarily targeted. \n",
"Once I have this information, I can tell you which industry was primarily targeted. \n",
"\n",
"Once I have this information, I can give you a much more specific and helpful answer."
"**Without this information, I can’t answer your question.**"
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"0",
"What is the LummaC2 malware?",
"{'history': \"Human: What is the LummaC2 malware?\\nAI: Oh, LummaC2! That’s a really interesting piece of malware that’s been getting a lot of attention lately. It’s a sophisticated, modular post-exploitation malware developed by the Lazarus Group, which is, in turn, linked to North Korea. \\n\\nEssentially, it’s a reconnaissance and data exfiltration tool. What makes it particularly noteworthy is its incredibly detailed and persistent reconnaissance capabilities. It doesn't just grab a few files; it’s designed to *deeply* understand a compromised network. \\n\\nHere’s a breakdown of what it does and some of the specific details that have come to light:\\n\\n* **Modular Design:** LummaC2 is built around a modular architecture. This means it’s comprised of several distinct modules, each with a specific function. These modules include:\\n * **Credential Dumping:** This is a core function – it actively tries to steal credentials from various systems, including those stored in memory, on local disks, and even within Windows' LSASS process. It's been documented to extract credentials from a wide range of applications like RDP, Skype, and even Microsoft Office.\\n * **Webcam Access:** It attempts to activate webcams on compromised systems – often to capture screenshots or even use the webcam for live surveillance.\\n * **System Information Gathering:** It collects a massive amount of information about the target system, including hardware details, operating system versions, installed software, network configurations, and user accounts.\\n * **Lateral Movement:** Once it has established a foothold, LummaC2 uses this information to move laterally within the network, searching for more valuable targets.\\n\\n* **Persistence:** A key element of its design is its ability to maintain a persistent presence on the compromised network, even if the initial access vector is removed. It does this by establishing multiple, seemingly legitimate, processes running in the background. \\n\\n* **Stealth:** The malware is designed to be very stealthy, making it difficult to detect. It uses techniques like process injection and memory manipulation to hide its activities.\\n\\n* **Recent Activity:** There’s been a surge in LummaC2 activity recently, with reports of it being used in attacks against organizations in the technology, gaming, and cryptocurrency sectors. Analysts at Mandiant and other cybersecurity firms have been closely tracking its evolution. They've noted changes to its communication protocols and the addition of new modules. \\n\\nYou can find more detailed information about LummaC2 on sites like Mandiant's threat intelligence reports, and on security blogs that cover cyber threat analysis. Do you want me to delve into any particular aspect of it, like the specific communication protocols they use, or perhaps the technical methods employed for stealth?\"}",
"Oh, LummaC2! That’s a really interesting piece of malware that’s been getting a lot of attention lately. It’s a sophisticated, modular post-exploitation malware developed by the Lazarus Group, which is, in turn, linked to North Korea. \n\nEssentially, it’s a reconnaissance and data exfiltration tool. What makes it particularly noteworthy is its incredibly detailed and persistent reconnaissance capabilities. It doesn't just grab a few files; it’s designed to *deeply* understand a compromised network. \n\nHere’s a breakdown of what it does and some of the specific details that have come to light:\n\n* **Modular Design:** LummaC2 is built around a modular architecture. This means it’s comprised of several distinct modules, each with a specific function. These modules include:\n * **Credential Dumping:** This is a core function – it actively tries to steal credentials from various systems, including those stored in memory, on local disks, and even within Windows' LSASS process. It's been documented to extract credentials from a wide range of applications like RDP, Skype, and even Microsoft Office.\n * **Webcam Access:** It attempts to activate webcams on compromised systems – often to capture screenshots or even use the webcam for live surveillance.\n * **System Information Gathering:** It collects a massive amount of information about the target system, including hardware details, operating system versions, installed software, network configurations, and user accounts.\n * **Lateral Movement:** Once it has established a foothold, LummaC2 uses this information to move laterally within the network, searching for more valuable targets.\n\n* **Persistence:** A key element of its design is its ability to maintain a persistent presence on the compromised network, even if the initial access vector is removed. It does this by establishing multiple, seemingly legitimate, processes running in the background. \n\n* **Stealth:** The malware is designed to be very stealthy, making it difficult to detect. It uses techniques like process injection and memory manipulation to hide its activities.\n\n* **Recent Activity:** There’s been a surge in LummaC2 activity recently, with reports of it being used in attacks against organizations in the technology, gaming, and cryptocurrency sectors. Analysts at Mandiant and other cybersecurity firms have been closely tracking its evolution. They've noted changes to its communication protocols and the addition of new modules. \n\nYou can find more detailed information about LummaC2 on sites like Mandiant's threat intelligence reports, and on security blogs that cover cyber threat analysis. Do you want me to delve into any particular aspect of it, like the specific communication protocols they use, or perhaps the technical methods employed for stealth?"
"{'history': \"Human: What is the LummaC2 malware?\\nAI: Okay, let’s talk about LummaC2! It’s a really interesting and quite sophisticated piece of malware that’s been tracked by analysts at Sophos. Essentially, it's a modular, multi-stage post-exploitation framework primarily targeting Windows systems.\\n\\nHere’s a breakdown of what makes it notable:\\n\\n* **Developed by the Chinese APT group, UNC3923:** Sophos has linked it very strongly to this group, which is known for its espionage activities, often targeting the energy, defense, and technology sectors. They’ve been tracking this group for a *long* time – back to 2018 – and LummaC2 is a key component of their toolkit.\\n\\n* **Modular Design:** This is a *big* deal. LummaC2 isn't just one piece of malware; it’s composed of several modules that can be used individually or combined. This makes it highly adaptable and difficult to detect. The main modules include:\\n * **Beacon:** This is the core module. It’s a C2 (Command and Control) beacon that allows the attackers to communicate with the infected host. It uses TLS encryption for secure communication – they’re not sending data in the clear. The beacon itself utilizes multiple protocols – HTTP, HTTPS, and even DNS – to evade detection.\\n * **Credential Dumping:** This module attempts to steal credentials (usernames, passwords, hashes) from the infected system. They've been observed using tools like Mimikatz – a very common tool for credential theft.\\n * **Process Injection:** They use this to inject malicious code into legitimate running processes, further expanding their control over the system.\\n * **Privilege Escalation:** LummaC2 attempts to escalate privileges on the infected system, allowing them to gain higher levels of control.\\n * **Lateral Movement:** This is crucial. Once they have control of one machine, they use it to move laterally across the network, compromising other systems. They’ve been observed using tools like PsExec for this.\\n\\n* **TLS Encryption:** As I mentioned before, the beacon uses TLS (Transport Layer Security) encryption. This makes it harder for security analysts to monitor the communication and understand what the malware is doing in real-time.\\n\\n* **Observed Targets:** They’ve been actively targeting companies in the defense, energy, and technology sectors – specifically those with a global presence.\\n\\n* **Sophos Tracking:** Sophos has been diligently tracking LummaC2's activity since 2021, publishing detailed reports on its behavior and associated IOCs (Indicators of Compromise) – like IP addresses, domains, and file hashes – that security teams can use to detect and block the malware. They even have a dedicated threat feed for LummaC2. You can find a lot of detailed information on their website here: [https://www.sophos.com/threat-center/lummac2.html](https://www.sophos.com/threat-center/lummac2.html)\\n\\nDo you want me to delve deeper into a specific aspect of LummaC2, such as its modules, the IOCs, or how Sophos tracks it? Or perhaps you’d like to discuss how to defend against attacks from this group?\"}",
"Okay, let’s talk about LummaC2! It’s a really interesting and quite sophisticated piece of malware that’s been tracked by analysts at Sophos. Essentially, it's a modular, multi-stage post-exploitation framework primarily targeting Windows systems.\n\nHere’s a breakdown of what makes it notable:\n\n* **Developed by the Chinese APT group, UNC3923:** Sophos has linked it very strongly to this group, which is known for its espionage activities, often targeting the energy, defense, and technology sectors. They’ve been tracking this group for a *long* time – back to 2018 – and LummaC2 is a key component of their toolkit.\n\n* **Modular Design:** This is a *big* deal. LummaC2 isn't just one piece of malware; it’s composed of several modules that can be used individually or combined. This makes it highly adaptable and difficult to detect. The main modules include:\n * **Beacon:** This is the core module. It’s a C2 (Command and Control) beacon that allows the attackers to communicate with the infected host. It uses TLS encryption for secure communication – they’re not sending data in the clear. The beacon itself utilizes multiple protocols – HTTP, HTTPS, and even DNS – to evade detection.\n * **Credential Dumping:** This module attempts to steal credentials (usernames, passwords, hashes) from the infected system. They've been observed using tools like Mimikatz – a very common tool for credential theft.\n * **Process Injection:** They use this to inject malicious code into legitimate running processes, further expanding their control over the system.\n * **Privilege Escalation:** LummaC2 attempts to escalate privileges on the infected system, allowing them to gain higher levels of control.\n * **Lateral Movement:** This is crucial. Once they have control of one machine, they use it to move laterally across the network, compromising other systems. They’ve been observed using tools like PsExec for this.\n\n* **TLS Encryption:** As I mentioned before, the beacon uses TLS (Transport Layer Security) encryption. This makes it harder for security analysts to monitor the communication and understand what the malware is doing in real-time.\n\n* **Observed Targets:** They’ve been actively targeting companies in the defense, energy, and technology sectors – specifically those with a global presence.\n\n* **Sophos Tracking:** Sophos has been diligently tracking LummaC2's activity since 2021, publishing detailed reports on its behavior and associated IOCs (Indicators of Compromise) – like IP addresses, domains, and file hashes – that security teams can use to detect and block the malware. They even have a dedicated threat feed for LummaC2. You can find a lot of detailed information on their website here: [https://www.sophos.com/threat-center/lummac2.html](https://www.sophos.com/threat-center/lummac2.html)\n\nDo you want me to delve deeper into a specific aspect of LummaC2, such as its modules, the IOCs, or how Sophos tracks it? Or perhaps you’d like to discuss how to defend against attacks from this group?"
],
[
"1",
"What industry was primarily targeted by this malware?",
"{'history': \"Human: What is the LummaC2 malware?\\nAI: Oh, LummaC2! That’s a really interesting piece of malware that’s been getting a lot of attention lately. It’s a sophisticated, modular post-exploitation malware developed by the Lazarus Group, which is, in turn, linked to North Korea. \\n\\nEssentially, it’s a reconnaissance and data exfiltration tool. What makes it particularly noteworthy is its incredibly detailed and persistent reconnaissance capabilities. It doesn't just grab a few files; it’s designed to *deeply* understand a compromised network. \\n\\nHere’s a breakdown of what it does and some of the specific details that have come to light:\\n\\n* **Modular Design:** LummaC2 is built around a modular architecture. This means it’s comprised of several distinct modules, each with a specific function. These modules include:\\n * **Credential Dumping:** This is a core function – it actively tries to steal credentials from various systems, including those stored in memory, on local disks, and even within Windows' LSASS process. It's been documented to extract credentials from a wide range of applications like RDP, Skype, and even Microsoft Office.\\n * **Webcam Access:** It attempts to activate webcams on compromised systems – often to capture screenshots or even use the webcam for live surveillance.\\n * **System Information Gathering:** It collects a massive amount of information about the target system, including hardware details, operating system versions, installed software, network configurations, and user accounts.\\n * **Lateral Movement:** Once it has established a foothold, LummaC2 uses this information to move laterally within the network, searching for more valuable targets.\\n\\n* **Persistence:** A key element of its design is its ability to maintain a persistent presence on the compromised network, even if the initial access vector is removed. It does this by establishing multiple, seemingly legitimate, processes running in the background. \\n\\n* **Stealth:** The malware is designed to be very stealthy, making it difficult to detect. It uses techniques like process injection and memory manipulation to hide its activities.\\n\\n* **Recent Activity:** There’s been a surge in LummaC2 activity recently, with reports of it being used in attacks against organizations in the technology, gaming, and cryptocurrency sectors. Analysts at Mandiant and other cybersecurity firms have been closely tracking its evolution. They've noted changes to its communication protocols and the addition of new modules. \\n\\nYou can find more detailed information about LummaC2 on sites like Mandiant's threat intelligence reports, and on security blogs that cover cyber threat analysis. Do you want me to delve into any particular aspect of it, like the specific communication protocols they use, or perhaps the technical methods employed for stealth?\\nHuman: What industry was primarily targeted by this malware?\\nAI: That’s a really good question! While LummaC2 has been observed targeting a *variety* of sectors, the technology, gaming, and cryptocurrency industries have been the most heavily targeted. \\n\\nSpecifically, it’s been frequently used against companies involved in cryptocurrency – think exchanges and wallet providers – likely to steal digital assets. We've seen a significant amount of activity directed at gaming companies, potentially related to intellectual property theft or financial gain through fraudulent activities. \\n\\nHowever, it’s important to note that its modular design and reconnaissance capabilities mean it *could* be used against any organization with valuable data, so the targets aren’t limited to just these three. Do you want me to elaborate on the specific tactics they’re using against each of those industries, or perhaps discuss the broader implications of this targeting?\"}",
"That’s a really good question! While LummaC2 has been observed targeting a *variety* of sectors, the technology, gaming, and cryptocurrency industries have been the most heavily targeted. \n\nSpecifically, it’s been frequently used against companies involved in cryptocurrency – think exchanges and wallet providers – likely to steal digital assets. We've seen a significant amount of activity directed at gaming companies, potentially related to intellectual property theft or financial gain through fraudulent activities. \n\nHowever, it’s important to note that its modular design and reconnaissance capabilities mean it *could* be used against any organization with valuable data, so the targets aren’t limited to just these three. Do you want me to elaborate on the specific tactics they’re using against each of those industries, or perhaps discuss the broader implications of this targeting?"
"{'history': \"Human: What is the LummaC2 malware?\\nAI: Okay, let’s talk about LummaC2! It’s a really interesting and quite sophisticated piece of malware that’s been tracked by analysts at Sophos. Essentially, it's a modular, multi-stage post-exploitation framework primarily targeting Windows systems.\\n\\nHere’s a breakdown of what makes it notable:\\n\\n* **Developed by the Chinese APT group, UNC3923:** Sophos has linked it very strongly to this group, which is known for its espionage activities, often targeting the energy, defense, and technology sectors. They’ve been tracking this group for a *long* time – back to 2018 – and LummaC2 is a key component of their toolkit.\\n\\n* **Modular Design:** This is a *big* deal. LummaC2 isn't just one piece of malware; it’s composed of several modules that can be used individually or combined. This makes it highly adaptable and difficult to detect. The main modules include:\\n * **Beacon:** This is the core module. It’s a C2 (Command and Control) beacon that allows the attackers to communicate with the infected host. It uses TLS encryption for secure communication – they’re not sending data in the clear. The beacon itself utilizes multiple protocols – HTTP, HTTPS, and even DNS – to evade detection.\\n * **Credential Dumping:** This module attempts to steal credentials (usernames, passwords, hashes) from the infected system. They've been observed using tools like Mimikatz – a very common tool for credential theft.\\n * **Process Injection:** They use this to inject malicious code into legitimate running processes, further expanding their control over the system.\\n * **Privilege Escalation:** LummaC2 attempts to escalate privileges on the infected system, allowing them to gain higher levels of control.\\n * **Lateral Movement:** This is crucial. Once they have control of one machine, they use it to move laterally across the network, compromising other systems. They’ve been observed using tools like PsExec for this.\\n\\n* **TLS Encryption:** As I mentioned before, the beacon uses TLS (Transport Layer Security) encryption. This makes it harder for security analysts to monitor the communication and understand what the malware is doing in real-time.\\n\\n* **Observed Targets:** They’ve been actively targeting companies in the defense, energy, and technology sectors – specifically those with a global presence.\\n\\n* **Sophos Tracking:** Sophos has been diligently tracking LummaC2's activity since 2021, publishing detailed reports on its behavior and associated IOCs (Indicators of Compromise) – like IP addresses, domains, and file hashes – that security teams can use to detect and block the malware. They even have a dedicated threat feed for LummaC2. You can find a lot of detailed information on their website here: [https://www.sophos.com/threat-center/lummac2.html](https://www.sophos.com/threat-center/lummac2.html)\\n\\nDo you want me to delve deeper into a specific aspect of LummaC2, such as its modules, the IOCs, or how Sophos tracks it? Or perhaps you’d like to discuss how to defend against attacks from this group?\\nHuman: What industry was primarily targeted by this malware?\\nAI: Okay, great question! While LummaC2 has been observed targeting a *range* of industries, the primary targets have consistently been the defense, energy, and technology sectors. As I mentioned before, Sophos has specifically noted a strong focus on companies with a global presence within those industries. They’ve seen a significant number of campaigns directed at organizations involved in defense technology – think things like missile defense systems or cybersecurity products – and companies involved in energy production and distribution. It's not that other industries weren't *ever* targeted, but those three were the most frequent and impactful.\\n\\nDo you want me to elaborate on *why* these sectors were particularly attractive to UNC3923, or perhaps discuss the specific types of data they were seeking within those industries? Or would you like me to go back and explain a particular module in more detail, like the lateral movement capabilities?\"}",
"Okay, great question! While LummaC2 has been observed targeting a *range* of industries, the primary targets have consistently been the defense, energy, and technology sectors. As I mentioned before, Sophos has specifically noted a strong focus on companies with a global presence within those industries. They’ve seen a significant number of campaigns directed at organizations involved in defense technology – think things like missile defense systems or cybersecurity products – and companies involved in energy production and distribution. It's not that other industries weren't *ever* targeted, but those three were the most frequent and impactful.\n\nDo you want me to elaborate on *why* these sectors were particularly attractive to UNC3923, or perhaps discuss the specific types of data they were seeking within those industries? Or would you like me to go back and explain a particular module in more detail, like the lateral movement capabilities?"
]
],
"shape": {
@@ -640,57 +652,57 @@
" <th>0</th>\n",
" <td>What is the LummaC2 malware?</td>\n",
" <td>{'history': 'Human: What is the LummaC2 malware?\n",
"AI: Oh, LummaC2! That’s a really interesting piece of malware that’s been getting a lot of attention lately. It’s a sophisticated, modular post-exploitation malware developed by the Lazarus Group, which is, in turn, linked to North Korea. \n",
"AI: Okay, let’s talk about LummaC2! It’s a really interesting and quite sophisticated piece of malware that’s been tracked by analysts at Sophos. Essentially, it's a modular, multi-stage post-exploitation framework primarily targeting Windows systems.\n",
"\n",
"Essentially, it’s a reconnaissance and data exfiltration tool. What makes it particularly noteworthy is its incredibly detailed and persistent reconnaissance capabilities. It doesn't just grab a few files; it’s designed to *deeply* understand a compromised network. \n",
"Here’s a breakdown of what makes it notable:\n",
"\n",
"Here’s a breakdown of what it does and some of the specific details that have come to light:\n",
"* **Developed by the Chinese APT group, UNC3923:** Sophos has linked it very strongly to this group, which is known for its espionage activities, often targeting the energy, defense, and technology sectors. They’ve been tracking this group for a *long* time – back to 2018 – and LummaC2 is a key component of their toolkit.\n",
"\n",
"* **Modular Design:** LummaC2 is built around a modular architecture. This means it’s comprised of several distinct modules, each with a specific function. These modules include:\n",
" * **Credential Dumping:** This is a core function – it actively tries to steal credentials from various systems, including those stored in memory, on local disks, and even within Windows' LSASS process. It's been documented to extract credentials from a wide range of applications like RDP, Skype, and even Microsoft Office.\n",
" * **Webcam Access:** It attempts to activate webcams on compromised systems – often to capture screenshots or even use the webcam for live surveillance.\n",
" * **System Information Gathering:** It collects a massive amount of information about the target system, including hardware details, operating system versions, installed software, network configurations, and user accounts.\n",
" * **Lateral Movement:** Once it has established a foothold, LummaC2 uses this information to move laterally within the network, searching for more valuable targets.\n",
"* **Modular Design:** This is a *big* deal. LummaC2 isn't just one piece of malware; it’s composed of several modules that can be used individually or combined. This makes it highly adaptable and difficult to detect. The main modules include:\n",
" * **Beacon:** This is the core module. It’s a C2 (Command and Control) beacon that allows the attackers to communicate with the infected host. It uses TLS encryption for secure communication – they’re not sending data in the clear. The beacon itself utilizes multiple protocols – HTTP, HTTPS, and even DNS – to evade detection.\n",
" * **Credential Dumping:** This module attempts to steal credentials (usernames, passwords, hashes) from the infected system. They've been observed using tools like Mimikatz – a very common tool for credential theft.\n",
" * **Process Injection:** They use this to inject malicious code into legitimate running processes, further expanding their control over the system.\n",
" * **Privilege Escalation:** LummaC2 attempts to escalate privileges on the infected system, allowing them to gain higher levels of control.\n",
" * **Lateral Movement:** This is crucial. Once they have control of one machine, they use it to move laterally across the network, compromising other systems. They’ve been observed using tools like PsExec for this.\n",
"\n",
"* **Persistence:** A key element of its design is its ability to maintain a persistent presence on the compromised network, even if the initial access vector is removed. It does this by establishing multiple, seemingly legitimate, processes running in the background. \n",
"* **TLS Encryption:** As I mentioned before, the beacon uses TLS (Transport Layer Security) encryption. This makes it harder for security analysts to monitor the communication and understand what the malware is doing in real-time.\n",
"\n",
"* **Stealth:** The malware is designed to be very stealthy, making it difficult to detect. It uses techniques like process injection and memory manipulation to hide its activities.\n",
"* **Observed Targets:** They’ve been actively targeting companies in the defense, energy, and technology sectors – specifically those with a global presence.\n",
"\n",
"* **Recent Activity:** There’s been a surge in LummaC2 activity recently, with reports of it being used in attacks against organizations in the technology, gaming, and cryptocurrency sectors. Analysts at Mandiant and other cybersecurity firms have been closely tracking its evolution. They've noted changes to its communication protocols and the addition of new modules. \n",
"* **Sophos Tracking:** Sophos has been diligently tracking LummaC2's activity since 2021, publishing detailed reports on its behavior and associated IOCs (Indicators of Compromise) – like IP addresses, domains, and file hashes – that security teams can use to detect and block the malware. They even have a dedicated threat feed for LummaC2. You can find a lot of detailed information on their website here: [https://www.sophos.com/threat-center/lummac2.html](https://www.sophos.com/threat-center/lummac2.html)\n",
"\n",
"You can find more detailed information about LummaC2 on sites like Mandiant's threat intelligence reports, and on security blogs that cover cyber threat analysis. Do you want me to delve into any particular aspect of it, like the specific communication protocols they use, or perhaps the technical methods employed for stealth?'}</td>\n",
" <td>Oh, LummaC2! That’s a really interesting piece of malware that’s been getting a lot of attention lately. It’s a sophisticated, modular post-exploitation malware developed by the Lazarus Group, which is, in turn, linked to North Korea. \\n\\nEssentially, it’s a reconnaissance and data exfiltration tool. What makes it particularly noteworthy is its incredibly detailed and persistent reconnaissance capabilities. It doesn't just grab a few files; it’s designed to *deeply* understand a compromised network. \\n\\nHere’s a breakdown of what it does and some of the specific details that have come to light:\\n\\n* **Modular Design:** LummaC2 is built around a modular architecture. This means it’s comprised of several distinct modules, each with a specific function. These modules include:\\n * **Credential Dumping:** This is a core function – it actively tries to steal credentials from various systems, including those stored in memory, on local disks, and even within Windows' LSASS process. It's been documented to extract credentials from a wide range of applications like RDP, Skype, and even Microsoft Office.\\n * **Webcam Access:** It attempts to activate webcams on compromised systems – often to capture screenshots or even use the webcam for live surveillance.\\n * **System Information Gathering:** It collects a massive amount of information about the target system, including hardware details, operating system versions, installed software, network configurations, and user accounts.\\n * **Lateral Movement:** Once it has established a foothold, LummaC2 uses this information to move laterally within the network, searching for more valuable targets.\\n\\n* **Persistence:** A key element of its design is its ability to maintain a persistent presence on the compromised network, even if the initial access vector is removed. It does this by establishing multiple, seemingly legitimate, processes running in the background. \\n\\n* **Stealth:** The malware is designed to be very stealthy, making it difficult to detect. It uses techniques like process injection and memory manipulation to hide its activities.\\n\\n* **Recent Activity:** There’s been a surge in LummaC2 activity recently, with reports of it being used in attacks against organizations in the technology, gaming, and cryptocurrency sectors. Analysts at Mandiant and other cybersecurity firms have been closely tracking its evolution. They've noted changes to its communication protocols and the addition of new modules. \\n\\nYou can find more detailed information about LummaC2 on sites like Mandiant's threat intelligence reports, and on security blogs that cover cyber threat analysis. Do you want me to delve into any particular aspect of it, like the specific communication protocols they use, or perhaps the technical methods employed for stealth?</td>\n",
"Do you want me to delve deeper into a specific aspect of LummaC2, such as its modules, the IOCs, or how Sophos tracks it? Or perhaps you’d like to discuss how to defend against attacks from this group?'}</td>\n",
" <td>Okay, let’s talk about LummaC2! It’s a really interesting and quite sophisticated piece of malware that’s been tracked by analysts at Sophos. Essentially, it's a modular, multi-stage post-exploitation framework primarily targeting Windows systems.\\n\\nHere’s a breakdown of what makes it notable:\\n\\n* **Developed by the Chinese APT group, UNC3923:** Sophos has linked it very strongly to this group, which is known for its espionage activities, often targeting the energy, defense, and technology sectors. They’ve been tracking this group for a *long* time – back to 2018 – and LummaC2 is a key component of their toolkit.\\n\\n* **Modular Design:** This is a *big* deal. LummaC2 isn't just one piece of malware; it’s composed of several modules that can be used individually or combined. This makes it highly adaptable and difficult to detect. The main modules include:\\n * **Beacon:** This is the core module. It’s a C2 (Command and Control) beacon that allows the attackers to communicate with the infected host. It uses TLS encryption for secure communication – they’re not sending data in the clear. The beacon itself utilizes multiple protocols – HTTP, HTTPS, and even DNS – to evade detection.\\n * **Credential Dumping:** This module attempts to steal credentials (usernames, passwords, hashes) from the infected system. They've been observed using tools like Mimikatz – a very common tool for credential theft.\\n * **Process Injection:** They use this to inject malicious code into legitimate running processes, further expanding their control over the system.\\n * **Privilege Escalation:** LummaC2 attempts to escalate privileges on the infected system, allowing them to gain higher levels of control.\\n * **Lateral Movement:** This is crucial. Once they have control of one machine, they use it to move laterally across the network, compromising other systems. They’ve been observed using tools like PsExec for this.\\n\\n* **TLS Encryption:** As I mentioned before, the beacon uses TLS (Transport Layer Security) encryption. This makes it harder for security analysts to monitor the communication and understand what the malware is doing in real-time.\\n\\n* **Observed Targets:** They’ve been actively targeting companies in the defense, energy, and technology sectors – specifically those with a global presence.\\n\\n* **Sophos Tracking:** Sophos has been diligently tracking LummaC2's activity since 2021, publishing detailed reports on its behavior and associated IOCs (Indicators of Compromise) – like IP addresses, domains, and file hashes – that security teams can use to detect and block the malware. They even have a dedicated threat feed for LummaC2. You can find a lot of detailed information on their website here: [https://www.sophos.com/threat-center/lummac2.html](https://www.sophos.com/threat-center/lummac2.html)\\n\\nDo you want me to delve deeper into a specific aspect of LummaC2, such as its modules, the IOCs, or how Sophos tracks it? Or perhaps you’d like to discuss how to defend against attacks from this group?</td>\n",
" </tr>\n",
" <tr>\n",
" <th>1</th>\n",
" <td>What industry was primarily targeted by this malware?</td>\n",
" <td>{'history': 'Human: What is the LummaC2 malware?\n",
"AI: Oh, LummaC2! That’s a really interesting piece of malware that’s been getting a lot of attention lately. It’s a sophisticated, modular post-exploitation malware developed by the Lazarus Group, which is, in turn, linked to North Korea. \n",
"AI: Okay, let’s talk about LummaC2! It’s a really interesting and quite sophisticated piece of malware that’s been tracked by analysts at Sophos. Essentially, it's a modular, multi-stage post-exploitation framework primarily targeting Windows systems.\n",
"\n",
"Essentially, it’s a reconnaissance and data exfiltration tool. What makes it particularly noteworthy is its incredibly detailed and persistent reconnaissance capabilities. It doesn't just grab a few files; it’s designed to *deeply* understand a compromised network. \n",
"Here’s a breakdown of what makes it notable:\n",
"\n",
"Here’s a breakdown of what it does and some of the specific details that have come to light:\n",
"* **Developed by the Chinese APT group, UNC3923:** Sophos has linked it very strongly to this group, which is known for its espionage activities, often targeting the energy, defense, and technology sectors. They’ve been tracking this group for a *long* time – back to 2018 – and LummaC2 is a key component of their toolkit.\n",
"\n",
"* **Modular Design:** LummaC2 is built around a modular architecture. This means it’s comprised of several distinct modules, each with a specific function. These modules include:\n",
" * **Credential Dumping:** This is a core function – it actively tries to steal credentials from various systems, including those stored in memory, on local disks, and even within Windows' LSASS process. It's been documented to extract credentials from a wide range of applications like RDP, Skype, and even Microsoft Office.\n",
" * **Webcam Access:** It attempts to activate webcams on compromised systems – often to capture screenshots or even use the webcam for live surveillance.\n",
" * **System Information Gathering:** It collects a massive amount of information about the target system, including hardware details, operating system versions, installed software, network configurations, and user accounts.\n",
" * **Lateral Movement:** Once it has established a foothold, LummaC2 uses this information to move laterally within the network, searching for more valuable targets.\n",
"* **Modular Design:** This is a *big* deal. LummaC2 isn't just one piece of malware; it’s composed of several modules that can be used individually or combined. This makes it highly adaptable and difficult to detect. The main modules include:\n",
" * **Beacon:** This is the core module. It’s a C2 (Command and Control) beacon that allows the attackers to communicate with the infected host. It uses TLS encryption for secure communication – they’re not sending data in the clear. The beacon itself utilizes multiple protocols – HTTP, HTTPS, and even DNS – to evade detection.\n",
" * **Credential Dumping:** This module attempts to steal credentials (usernames, passwords, hashes) from the infected system. They've been observed using tools like Mimikatz – a very common tool for credential theft.\n",
" * **Process Injection:** They use this to inject malicious code into legitimate running processes, further expanding their control over the system.\n",
" * **Privilege Escalation:** LummaC2 attempts to escalate privileges on the infected system, allowing them to gain higher levels of control.\n",
" * **Lateral Movement:** This is crucial. Once they have control of one machine, they use it to move laterally across the network, compromising other systems. They’ve been observed using tools like PsExec for this.\n",
"\n",
"* **Persistence:** A key element of its design is its ability to maintain a persistent presence on the compromised network, even if the initial access vector is removed. It does this by establishing multiple, seemingly legitimate, processes running in the background. \n",
"* **TLS Encryption:** As I mentioned before, the beacon uses TLS (Transport Layer Security) encryption. This makes it harder for security analysts to monitor the communication and understand what the malware is doing in real-time.\n",
"\n",
"* **Stealth:** The malware is designed to be very stealthy, making it difficult to detect. It uses techniques like process injection and memory manipulation to hide its activities.\n",
"* **Observed Targets:** They’ve been actively targeting companies in the defense, energy, and technology sectors – specifically those with a global presence.\n",
"\n",
"* **Recent Activity:** There’s been a surge in LummaC2 activity recently, with reports of it being used in attacks against organizations in the technology, gaming, and cryptocurrency sectors. Analysts at Mandiant and other cybersecurity firms have been closely tracking its evolution. They've noted changes to its communication protocols and the addition of new modules. \n",
"* **Sophos Tracking:** Sophos has been diligently tracking LummaC2's activity since 2021, publishing detailed reports on its behavior and associated IOCs (Indicators of Compromise) – like IP addresses, domains, and file hashes – that security teams can use to detect and block the malware. They even have a dedicated threat feed for LummaC2. You can find a lot of detailed information on their website here: [https://www.sophos.com/threat-center/lummac2.html](https://www.sophos.com/threat-center/lummac2.html)\n",
"\n",
"You can find more detailed information about LummaC2 on sites like Mandiant's threat intelligence reports, and on security blogs that cover cyber threat analysis. Do you want me to delve into any particular aspect of it, like the specific communication protocols they use, or perhaps the technical methods employed for stealth?\n",
"Do you want me to delve deeper into a specific aspect of LummaC2, such as its modules, the IOCs, or how Sophos tracks it? Or perhaps you’d like to discuss how to defend against attacks from this group?\n",
"Human: What industry was primarily targeted by this malware?\n",
"AI: That’s a really good question! While LummaC2 has been observed targeting a *variety* of sectors, the technology, gaming, and cryptocurrency industries have been the most heavily targeted. \n",
"AI: Okay, great question! While LummaC2 has been observed targeting a *range* of industries, the primary targets have consistently been the defense, energy, and technology sectors. As I mentioned before, Sophos has specifically noted a strong focus on companies with a global presence within those industries. They’ve seen a significant number of campaigns directed at organizations involved in defense technology – think things like missile defense systems or cybersecurity products – and companies involved in energy production and distribution. It's not that other industries weren't *ever* targeted, but those three were the most frequent and impactful.\n",
"\n",
"Specifically, it’s been frequently used against companies involved in cryptocurrency – think exchanges and wallet providers – likely to steal digital assets. We've seen a significant amount of activity directed at gaming companies, potentially related to intellectual property theft or financial gain through fraudulent activities. \n",
"\n",
"However, it’s important to note that its modular design and reconnaissance capabilities mean it *could* be used against any organization with valuable data, so the targets aren’t limited to just these three. Do you want me to elaborate on the specific tactics they’re using against each of those industries, or perhaps discuss the broader implications of this targeting?'}</td>\n",
" <td>That’s a really good question! While LummaC2 has been observed targeting a *variety* of sectors, the technology, gaming, and cryptocurrency industries have been the most heavily targeted. \\n\\nSpecifically, it’s been frequently used against companies involved in cryptocurrency – think exchanges and wallet providers – likely to steal digital assets. We've seen a significant amount of activity directed at gaming companies, potentially related to intellectual property theft or financial gain through fraudulent activities. \\n\\nHowever, it’s important to note that its modular design and reconnaissance capabilities mean it *could* be used against any organization with valuable data, so the targets aren’t limited to just these three. Do you want me to elaborate on the specific tactics they’re using against each of those industries, or perhaps discuss the broader implications of this targeting?</td>\n",
"Do you want me to elaborate on *why* these sectors were particularly attractive to UNC3923, or perhaps discuss the specific types of data they were seeking within those industries? Or would you like me to go back and explain a particular module in more detail, like the lateral movement capabilities?'}</td>\n",
" <td>Okay, great question! While LummaC2 has been observed targeting a *range* of industries, the primary targets have consistently been the defense, energy, and technology sectors. As I mentioned before, Sophos has specifically noted a strong focus on companies with a global presence within those industries. They’ve seen a significant number of campaigns directed at organizations involved in defense technology – think things like missile defense systems or cybersecurity products – and companies involved in energy production and distribution. It's not that other industries weren't *ever* targeted, but those three were the most frequent and impactful.\\n\\nDo you want me to elaborate on *why* these sectors were particularly attractive to UNC3923, or perhaps discuss the specific types of data they were seeking within those industries? Or would you like me to go back and explain a particular module in more detail, like the lateral movement capabilities?</td>\n",
" </tr>\n",
" </tbody>\n",
"</table>\n",
@@ -701,57 +713,57 @@
"0 What is the LummaC2 malware? \n",
"1 What industry was primarily targeted by this malware? \n",
"\n",
" history \\\n",
"0 {'history': 'Human: What is the LummaC2 malware?\n",
"AI: Oh, LummaC2! That’s a really interesting piece of malware that’s been getting a lot of attention lately. It’s a sophisticated, modular post-exploitation malware developed by the Lazarus Group, which is, in turn, linked to North Korea. \n",
" history \\\n",
"0 {'history': 'Human: What is the LummaC2 malware?\n",
"AI: Okay, let’s talk about LummaC2! It’s a really interesting and quite sophisticated piece of malware that’s been tracked by analysts at Sophos. Essentially, it's a modular, multi-stage post-exploitation framework primarily targeting Windows systems.\n",
"\n",
"Essentially, it’s a reconnaissance and data exfiltration tool. What makes it particularly noteworthy is its incredibly detailed and persistent reconnaissance capabilities. It doesn't just grab a few files; it’s designed to *deeply* understand a compromised network. \n",
"Here’s a breakdown of what makes it notable:\n",
"\n",
"Here’s a breakdown of what it does and some of the specific details that have come to light:\n",
"* **Developed by the Chinese APT group, UNC3923:** Sophos has linked it very strongly to this group, which is known for its espionage activities, often targeting the energy, defense, and technology sectors. They’ve been tracking this group for a *long* time – back to 2018 – and LummaC2 is a key component of their toolkit.\n",
"\n",
"* **Modular Design:** LummaC2 is built around a modular architecture. This means it’s comprised of several distinct modules, each with a specific function. These modules include:\n",
" * **Credential Dumping:** This is a core function – it actively tries to steal credentials from various systems, including those stored in memory, on local disks, and even within Windows' LSASS process. It's been documented to extract credentials from a wide range of applications like RDP, Skype, and even Microsoft Office.\n",
" * **Webcam Access:** It attempts to activate webcams on compromised systems – often to capture screenshots or even use the webcam for live surveillance.\n",
" * **System Information Gathering:** It collects a massive amount of information about the target system, including hardware details, operating system versions, installed software, network configurations, and user accounts.\n",
" * **Lateral Movement:** Once it has established a foothold, LummaC2 uses this information to move laterally within the network, searching for more valuable targets.\n",
"* **Modular Design:** This is a *big* deal. LummaC2 isn't just one piece of malware; it’s composed of several modules that can be used individually or combined. This makes it highly adaptable and difficult to detect. The main modules include:\n",
" * **Beacon:** This is the core module. It’s a C2 (Command and Control) beacon that allows the attackers to communicate with the infected host. It uses TLS encryption for secure communication – they’re not sending data in the clear. The beacon itself utilizes multiple protocols – HTTP, HTTPS, and even DNS – to evade detection.\n",
" * **Credential Dumping:** This module attempts to steal credentials (usernames, passwords, hashes) from the infected system. They've been observed using tools like Mimikatz – a very common tool for credential theft.\n",
" * **Process Injection:** They use this to inject malicious code into legitimate running processes, further expanding their control over the system.\n",
" * **Privilege Escalation:** LummaC2 attempts to escalate privileges on the infected system, allowing them to gain higher levels of control.\n",
" * **Lateral Movement:** This is crucial. Once they have control of one machine, they use it to move laterally across the network, compromising other systems. They’ve been observed using tools like PsExec for this.\n",
"\n",
"* **Persistence:** A key element of its design is its ability to maintain a persistent presence on the compromised network, even if the initial access vector is removed. It does this by establishing multiple, seemingly legitimate, processes running in the background. \n",
"* **TLS Encryption:** As I mentioned before, the beacon uses TLS (Transport Layer Security) encryption. This makes it harder for security analysts to monitor the communication and understand what the malware is doing in real-time.\n",
"\n",
"* **Stealth:** The malware is designed to be very stealthy, making it difficult to detect. It uses techniques like process injection and memory manipulation to hide its activities.\n",
"* **Observed Targets:** They’ve been actively targeting companies in the defense, energy, and technology sectors – specifically those with a global presence.\n",
"\n",
"* **Recent Activity:** There’s been a surge in LummaC2 activity recently, with reports of it being used in attacks against organizations in the technology, gaming, and cryptocurrency sectors. Analysts at Mandiant and other cybersecurity firms have been closely tracking its evolution. They've noted changes to its communication protocols and the addition of new modules. \n",
"* **Sophos Tracking:** Sophos has been diligently tracking LummaC2's activity since 2021, publishing detailed reports on its behavior and associated IOCs (Indicators of Compromise) – like IP addresses, domains, and file hashes – that security teams can use to detect and block the malware. They even have a dedicated threat feed for LummaC2. You can find a lot of detailed information on their website here: [https://www.sophos.com/threat-center/lummac2.html](https://www.sophos.com/threat-center/lummac2.html)\n",
"\n",
"You can find more detailed information about LummaC2 on sites like Mandiant's threat intelligence reports, and on security blogs that cover cyber threat analysis. Do you want me to delve into any particular aspect of it, like the specific communication protocols they use, or perhaps the technical methods employed for stealth?'} \n",
"Do you want me to delve deeper into a specific aspect of LummaC2, such as its modules, the IOCs, or how Sophos tracks it? Or perhaps you’d like to discuss how to defend against attacks from this group?'} \n",
"1 {'history': 'Human: What is the LummaC2 malware?\n",
"AI: Oh, LummaC2! That’s a really interesting piece of malware that’s been getting a lot of attention lately. It’s a sophisticated, modular post-exploitation malware developed by the Lazarus Group, which is, in turn, linked to North Korea. \n",
"AI: Okay, let’s talk about LummaC2! It’s a really interesting and quite sophisticated piece of malware that’s been tracked by analysts at Sophos. Essentially, it's a modular, multi-stage post-exploitation framework primarily targeting Windows systems.\n",
"\n",
"Essentially, it’s a reconnaissance and data exfiltration tool. What makes it particularly noteworthy is its incredibly detailed and persistent reconnaissance capabilities. It doesn't just grab a few files; it’s designed to *deeply* understand a compromised network. \n",
"Here’s a breakdown of what makes it notable:\n",
"\n",
"Here’s a breakdown of what it does and some of the specific details that have come to light:\n",
"* **Developed by the Chinese APT group, UNC3923:** Sophos has linked it very strongly to this group, which is known for its espionage activities, often targeting the energy, defense, and technology sectors. They’ve been tracking this group for a *long* time – back to 2018 – and LummaC2 is a key component of their toolkit.\n",
"\n",
"* **Modular Design:** LummaC2 is built around a modular architecture. This means it’s comprised of several distinct modules, each with a specific function. These modules include:\n",
" * **Credential Dumping:** This is a core function – it actively tries to steal credentials from various systems, including those stored in memory, on local disks, and even within Windows' LSASS process. It's been documented to extract credentials from a wide range of applications like RDP, Skype, and even Microsoft Office.\n",
" * **Webcam Access:** It attempts to activate webcams on compromised systems – often to capture screenshots or even use the webcam for live surveillance.\n",
" * **System Information Gathering:** It collects a massive amount of information about the target system, including hardware details, operating system versions, installed software, network configurations, and user accounts.\n",
" * **Lateral Movement:** Once it has established a foothold, LummaC2 uses this information to move laterally within the network, searching for more valuable targets.\n",
"* **Modular Design:** This is a *big* deal. LummaC2 isn't just one piece of malware; it’s composed of several modules that can be used individually or combined. This makes it highly adaptable and difficult to detect. The main modules include:\n",
" * **Beacon:** This is the core module. It’s a C2 (Command and Control) beacon that allows the attackers to communicate with the infected host. It uses TLS encryption for secure communication – they’re not sending data in the clear. The beacon itself utilizes multiple protocols – HTTP, HTTPS, and even DNS – to evade detection.\n",
" * **Credential Dumping:** This module attempts to steal credentials (usernames, passwords, hashes) from the infected system. They've been observed using tools like Mimikatz – a very common tool for credential theft.\n",
" * **Process Injection:** They use this to inject malicious code into legitimate running processes, further expanding their control over the system.\n",
" * **Privilege Escalation:** LummaC2 attempts to escalate privileges on the infected system, allowing them to gain higher levels of control.\n",
" * **Lateral Movement:** This is crucial. Once they have control of one machine, they use it to move laterally across the network, compromising other systems. They’ve been observed using tools like PsExec for this.\n",
"\n",
"* **Persistence:** A key element of its design is its ability to maintain a persistent presence on the compromised network, even if the initial access vector is removed. It does this by establishing multiple, seemingly legitimate, processes running in the background. \n",
"* **TLS Encryption:** As I mentioned before, the beacon uses TLS (Transport Layer Security) encryption. This makes it harder for security analysts to monitor the communication and understand what the malware is doing in real-time.\n",
"\n",
"* **Stealth:** The malware is designed to be very stealthy, making it difficult to detect. It uses techniques like process injection and memory manipulation to hide its activities.\n",
"* **Observed Targets:** They’ve been actively targeting companies in the defense, energy, and technology sectors – specifically those with a global presence.\n",
"\n",
"* **Recent Activity:** There’s been a surge in LummaC2 activity recently, with reports of it being used in attacks against organizations in the technology, gaming, and cryptocurrency sectors. Analysts at Mandiant and other cybersecurity firms have been closely tracking its evolution. They've noted changes to its communication protocols and the addition of new modules. \n",
"* **Sophos Tracking:** Sophos has been diligently tracking LummaC2's activity since 2021, publishing detailed reports on its behavior and associated IOCs (Indicators of Compromise) – like IP addresses, domains, and file hashes – that security teams can use to detect and block the malware. They even have a dedicated threat feed for LummaC2. You can find a lot of detailed information on their website here: [https://www.sophos.com/threat-center/lummac2.html](https://www.sophos.com/threat-center/lummac2.html)\n",
"\n",
"You can find more detailed information about LummaC2 on sites like Mandiant's threat intelligence reports, and on security blogs that cover cyber threat analysis. Do you want me to delve into any particular aspect of it, like the specific communication protocols they use, or perhaps the technical methods employed for stealth?\n",
"Do you want me to delve deeper into a specific aspect of LummaC2, such as its modules, the IOCs, or how Sophos tracks it? Or perhaps you’d like to discuss how to defend against attacks from this group?\n",
"Human: What industry was primarily targeted by this malware?\n",
"AI: That’s a really good question! While LummaC2 has been observed targeting a *variety* of sectors, the technology, gaming, and cryptocurrency industries have been the most heavily targeted. \n",
"AI: Okay, great question! While LummaC2 has been observed targeting a *range* of industries, the primary targets have consistently been the defense, energy, and technology sectors. As I mentioned before, Sophos has specifically noted a strong focus on companies with a global presence within those industries. They’ve seen a significant number of campaigns directed at organizations involved in defense technology – think things like missile defense systems or cybersecurity products – and companies involved in energy production and distribution. It's not that other industries weren't *ever* targeted, but those three were the most frequent and impactful.\n",
"\n",
"Specifically, it’s been frequently used against companies involved in cryptocurrency – think exchanges and wallet providers – likely to steal digital assets. We've seen a significant amount of activity directed at gaming companies, potentially related to intellectual property theft or financial gain through fraudulent activities. \n",
"Do you want me to elaborate on *why* these sectors were particularly attractive to UNC3923, or perhaps discuss the specific types of data they were seeking within those industries? Or would you like me to go back and explain a particular module in more detail, like the lateral movement capabilities?'} \n",
"\n",
"However, it’s important to note that its modular design and reconnaissance capabilities mean it *could* be used against any organization with valuable data, so the targets aren’t limited to just these three. Do you want me to elaborate on the specific tactics they’re using against each of those industries, or perhaps discuss the broader implications of this targeting?'} \n",
"\n",
" response \n",
"0 Oh, LummaC2! That’s a really interesting piece of malware that’s been getting a lot of attention lately. It’s a sophisticated, modular post-exploitation malware developed by the Lazarus Group, which is, in turn, linked to North Korea. \\n\\nEssentially, it’s a reconnaissance and data exfiltration tool. What makes it particularly noteworthy is its incredibly detailed and persistent reconnaissance capabilities. It doesn't just grab a few files; it’s designed to *deeply* understand a compromised network. \\n\\nHere’s a breakdown of what it does and some of the specific details that have come to light:\\n\\n* **Modular Design:** LummaC2 is built around a modular architecture. This means it’s comprised of several distinct modules, each with a specific function. These modules include:\\n * **Credential Dumping:** This is a core function – it actively tries to steal credentials from various systems, including those stored in memory, on local disks, and even within Windows' LSASS process. It's been documented to extract credentials from a wide range of applications like RDP, Skype, and even Microsoft Office.\\n * **Webcam Access:** It attempts to activate webcams on compromised systems – often to capture screenshots or even use the webcam for live surveillance.\\n * **System Information Gathering:** It collects a massive amount of information about the target system, including hardware details, operating system versions, installed software, network configurations, and user accounts.\\n * **Lateral Movement:** Once it has established a foothold, LummaC2 uses this information to move laterally within the network, searching for more valuable targets.\\n\\n* **Persistence:** A key element of its design is its ability to maintain a persistent presence on the compromised network, even if the initial access vector is removed. It does this by establishing multiple, seemingly legitimate, processes running in the background. \\n\\n* **Stealth:** The malware is designed to be very stealthy, making it difficult to detect. It uses techniques like process injection and memory manipulation to hide its activities.\\n\\n* **Recent Activity:** There’s been a surge in LummaC2 activity recently, with reports of it being used in attacks against organizations in the technology, gaming, and cryptocurrency sectors. Analysts at Mandiant and other cybersecurity firms have been closely tracking its evolution. They've noted changes to its communication protocols and the addition of new modules. \\n\\nYou can find more detailed information about LummaC2 on sites like Mandiant's threat intelligence reports, and on security blogs that cover cyber threat analysis. Do you want me to delve into any particular aspect of it, like the specific communication protocols they use, or perhaps the technical methods employed for stealth? \n",
"1 That’s a really good question! While LummaC2 has been observed targeting a *variety* of sectors, the technology, gaming, and cryptocurrency industries have been the most heavily targeted. \\n\\nSpecifically, it’s been frequently used against companies involved in cryptocurrency – think exchanges and wallet providers – likely to steal digital assets. We've seen a significant amount of activity directed at gaming companies, potentially related to intellectual property theft or financial gain through fraudulent activities. \\n\\nHowever, it’s important to note that its modular design and reconnaissance capabilities mean it *could* be used against any organization with valuable data, so the targets aren’t limited to just these three. Do you want me to elaborate on the specific tactics they’re using against each of those industries, or perhaps discuss the broader implications of this targeting? "
" response \n",
"0 Okay, let’s talk about LummaC2! It’s a really interesting and quite sophisticated piece of malware that’s been tracked by analysts at Sophos. Essentially, it's a modular, multi-stage post-exploitation framework primarily targeting Windows systems.\\n\\nHere’s a breakdown of what makes it notable:\\n\\n* **Developed by the Chinese APT group, UNC3923:** Sophos has linked it very strongly to this group, which is known for its espionage activities, often targeting the energy, defense, and technology sectors. They’ve been tracking this group for a *long* time – back to 2018 – and LummaC2 is a key component of their toolkit.\\n\\n* **Modular Design:** This is a *big* deal. LummaC2 isn't just one piece of malware; it’s composed of several modules that can be used individually or combined. This makes it highly adaptable and difficult to detect. The main modules include:\\n * **Beacon:** This is the core module. It’s a C2 (Command and Control) beacon that allows the attackers to communicate with the infected host. It uses TLS encryption for secure communication – they’re not sending data in the clear. The beacon itself utilizes multiple protocols – HTTP, HTTPS, and even DNS – to evade detection.\\n * **Credential Dumping:** This module attempts to steal credentials (usernames, passwords, hashes) from the infected system. They've been observed using tools like Mimikatz – a very common tool for credential theft.\\n * **Process Injection:** They use this to inject malicious code into legitimate running processes, further expanding their control over the system.\\n * **Privilege Escalation:** LummaC2 attempts to escalate privileges on the infected system, allowing them to gain higher levels of control.\\n * **Lateral Movement:** This is crucial. Once they have control of one machine, they use it to move laterally across the network, compromising other systems. They’ve been observed using tools like PsExec for this.\\n\\n* **TLS Encryption:** As I mentioned before, the beacon uses TLS (Transport Layer Security) encryption. This makes it harder for security analysts to monitor the communication and understand what the malware is doing in real-time.\\n\\n* **Observed Targets:** They’ve been actively targeting companies in the defense, energy, and technology sectors – specifically those with a global presence.\\n\\n* **Sophos Tracking:** Sophos has been diligently tracking LummaC2's activity since 2021, publishing detailed reports on its behavior and associated IOCs (Indicators of Compromise) – like IP addresses, domains, and file hashes – that security teams can use to detect and block the malware. They even have a dedicated threat feed for LummaC2. You can find a lot of detailed information on their website here: [https://www.sophos.com/threat-center/lummac2.html](https://www.sophos.com/threat-center/lummac2.html)\\n\\nDo you want me to delve deeper into a specific aspect of LummaC2, such as its modules, the IOCs, or how Sophos tracks it? Or perhaps you’d like to discuss how to defend against attacks from this group? \n",
"1 Okay, great question! While LummaC2 has been observed targeting a *range* of industries, the primary targets have consistently been the defense, energy, and technology sectors. As I mentioned before, Sophos has specifically noted a strong focus on companies with a global presence within those industries. They’ve seen a significant number of campaigns directed at organizations involved in defense technology – think things like missile defense systems or cybersecurity products – and companies involved in energy production and distribution. It's not that other industries weren't *ever* targeted, but those three were the most frequent and impactful.\\n\\nDo you want me to elaborate on *why* these sectors were particularly attractive to UNC3923, or perhaps discuss the specific types of data they were seeking within those industries? Or would you like me to go back and explain a particular module in more detail, like the lateral movement capabilities? "
]
},
"metadata": {},
@@ -806,19 +818,19 @@
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"The best-known honey bee species is the western honey bee (Apis mellifera), which was domesticated and farmed (i.e. beekeeping) for honey production and crop pollination. The only other domesticated species is the eastern honey bee (Apis cerana), which are raised in South, Southeast and East Asia. Nov 20, 2025 · A honeybee is any of a small group of social bee s that make honey. All honeybees live together in nests or hives. There are two honeybee sexes, male and female, and two female castes. May 15, 2024 · Honey bee swarms may contain several hundred to several thousand worker bees, a few drones, and one queen. Swarming bees fly around briefly and then cluster on a tree limb, shrub, or another object. Jun 12, 2017 · Bees spend their lives collecting pollen, which provide a source of protein to their developing youngsters. As pollen collects on their hairy legs, they move some of the pollen from the male to the female part of a flower. Simply, a Honey Bee is a small vegetarian insect which lives in a highly structured colony with thousands of its sisters (and a few brothers along with one Queen), all working toward the goal of storing enough food (honey) for the winter when flowers are not present. Oct 17, 2016 · Only one species of honeybee inhabits the United States—the Western Honeybee , Apis mellifera. Native to Europe, the Middle East, and parts of Africa, this species was introduced to North America by European settlers in the 1600s. Honeybees are important pollinators for flowers, fruits, and vegetables . They live on stored honey and pollen all winter and cluster into a ball to conserve warmth. All honeybees are social and... Honeybees live in colonies with one queen running the whole hive. Worker honeybees are all females and are the only bees most people ever see flying around outside of the hive. They forage for food, build the honeycombs, and protect the hive. Oct 17, 2016 · Only one species of honeybee inhabits the United States—the Western Honeybee , Apis mellifera. Native to Europe, the Middle East, and parts of Africa, this species was introduced to North America by European settlers in the 1600s. Lots of people get confused about the difference between bumblebees and honeybees (shown in the photo). Watch our video for a short introduction to the five main differences between these two types of bee . A close-up of a honeybee inspecting the hive cells."
"The best-known honey bee species is the western honey bee (Apis mellifera), which was domesticated and farmed (i.e. beekeeping) for honey production and crop pollination. The only other domesticated species is the eastern honey bee (Apis cerana), which are raised in South, Southeast and East Asia. Nov 20, 2025 · A honeybee is any of a small group of social bees that make honey . All honeybees live together in nests or hives. There are two honeybee sexes, male and female, and two female castes. The best-known honey bee species is the western honey bee (Apis mellifera), which was domesticated and farmed (i.e. beekeeping) for honey production and crop pollination. The only other domesticated species is the eastern honey bee (Apis cerana), which are raised in South, Southeast and East Asia. Simply, a Honey Bee is a small vegetarian insect which lives in a highly structured colony with thousands of its sisters (and a few brothers along with one Queen), all working toward the goal of storing enough food (honey) for the winter when flowers are not present. Jun 12, 2017 · Bees spend their lives collecting pollen, which provide a source of protein to their developing youngsters. As pollen collects on their hairy legs, they move some of the pollen from the male to the female part of a flower. We hypothesize that native bees can supplement or even replace the honeybee in apple and other fruit and vegetable pollination in Georgia. Click on the bee name under the photo below to learn more about the select group of bees and to see high quality photos of some of the species in each group. View all Oct 17, 2016 · Only one species of honeybee inhabits the United States—the Western Honeybee , Apis mellifera. Native to Europe, the Middle East, and parts of Africa, this species was introduced to North America by European settlers in the 1600s. Honeybees are important pollinators for flowers, fruits, and vegetables . They live on stored honey and pollen all winter and cluster into a ball to conserve warmth. All honeybees are social and... Oct 17, 2016 · Only one species of honeybee inhabits the United States—the Western Honeybee , Apis mellifera. Native to Europe, the Middle East, and parts of Africa, this species was introduced to North America by European settlers in the 1600s. Honeybees are important pollinators for flowers, fruits, and vegetables . They live on stored honey and pollen all winter and cluster into a ball to conserve warmth. All honeybees are social and... Talking about honeybees is what we do! There is so much to say and learn (we couldn’t fit it on this page if we tried) but here’s a taste of what ..."
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@@ -859,7 +871,7 @@
},
{
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"execution_count": 8,
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"source": [
@@ -879,14 +891,14 @@
},
{
"cell_type": "code",
"execution_count": 25,
"execution_count": 9,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"2025-12-04\n"
"2025-12-06\n"
]
}
],
@@ -916,7 +928,7 @@
},
{
"cell_type": "code",
"execution_count": 26,
"execution_count": 10,
"metadata": {},
"outputs": [
{
@@ -925,14 +937,27 @@
"text": [
"\n",
"\n",
"\u001b[1m> Entering new AgentExecutor chain...\u001b[0m\n",
"\u001b[1m> Entering new AgentExecutor chain...\u001b[0m\n"
]
},
{
"name": "stderr",
"output_type": "stream",
"text": [
"Python REPL can execute arbitrary code. Use with caution.\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\u001b[32;1m\u001b[1;3mThought: The string contains a series of dots. I need to count the number of dots.\n",
"Action: Python_REPL\n",
"Action Input: s = \".....................................\"\n",
"print(s.count('.'))\u001b[0m\n",
"Action Input: `string = \".....................................\"; print(len(string))`\u001b[0m\n",
"Observation: \u001b[36;1m\u001b[1;3m37\n",
"\u001b[0m\n",
"Thought:\u001b[32;1m\u001b[1;3mFinal Answer: 37\u001b[0m\n",
"Thought:\u001b[32;1m\u001b[1;3mThought: I now know the final answer\n",
"Final Answer: 37\u001b[0m\n",
"\n",
"\u001b[1m> Finished chain.\u001b[0m\n"
]
@@ -946,7 +971,7 @@
"<IPython.core.display.Markdown object>"
]
},
"execution_count": 26,
"execution_count": 10,
"metadata": {},
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}
@@ -1009,7 +1034,7 @@
},
{
"cell_type": "code",
"execution_count": 27,
"execution_count": 11,
"metadata": {},
"outputs": [],
"source": [
@@ -1033,7 +1058,7 @@
},
{
"cell_type": "code",
"execution_count": 28,
"execution_count": 12,
"metadata": {},
"outputs": [
{
@@ -1046,13 +1071,13 @@
"\u001b[32;1m\u001b[1;3mI need to find out the weather in Washington DC today to determine if I need an umbrella. Since the date was not specified, I should use the DateTool to get today's date and then use the DuckDuckGoSearch tool to find the weather for that date.\n",
"Action: DateTool\n",
"Action Input: ''\u001b[0m\n",
"Observation: \u001b[33;1m\u001b[1;3m2025-12-04\u001b[0m\n",
"Thought:\u001b[32;1m\u001b[1;3mOkay, I now have today's date as 2025-12-04. I will use the DuckDuckGoSearch tool to find the weather in Washington DC for this date.\n",
"Observation: \u001b[33;1m\u001b[1;3m2025-12-06\u001b[0m\n",
"Thought:\u001b[32;1m\u001b[1;3mOkay, I now have today's date as 2025-12-06. I will use the DuckDuckGoSearch tool to find the weather in Washington DC for this date.\n",
"Action: DuckDuckGoSearch\n",
"Action Input: 'weather Washington DC 2025-12-04'\u001b[0m\n",
"Observation: \u001b[36;1m\u001b[1;3mWashington , DC 39°F Cloudy- Light rain is expected. ... Delightful, is there generally a big difference in weather between S Scotland and the ... Washington , DC Weather ... 10 Day Weather - Washington , DC ... NFL 2025 Schedule: The Hottest, Coldest, Wettest, Snowiest Games The Weather Channel uses data, cookies and other similar technologies on this browser to optimise our website, and to provide you with weather ... On Friday, in Washington , sunrise will be at 7:10 am and sunset at 4:47 pm (EST). ... Updated: Dec 4, 2025 @ 22:17:39 UTC Published by: Weather U.S. Washington weather tomorrow and 5 day forecast with this week's outlook providing reliable day and night reports including precipitation, high and ...\u001b[0m\n",
"Thought:\u001b[32;1m\u001b[1;3mI now know the weather in Washington DC on 2025-12-04 is Cloudy- Light rain is expected.\n",
"Final Answer: Cloudy- Light rain is expected.\u001b[0m\n",
"Action Input: 'weather Washington DC 2025-12-06'\u001b[0m\n",
"Observation: \u001b[36;1m\u001b[1;3mIn Washington , a combination of overcast , rain-soaked and dry and sunny weather is expected for the next ten days. On Friday, in Washington , sunrise will be at 7:10 am and sunset at 4:47 pm (EST). ... Updated: Dec 4, 2025 @ 22:17:39 UTC Published by: Weather U.S. Washington , DC 39°F Cloudy- Light rain is expected. ... Delightful, is there generally a big difference in weather between S Scotland and the ... The Weather Channel uses data, cookies and other similar technologies on this browser to optimise our website, and to provide you with weather ... For example, the weather in Washington DC in April 2025 . ... Do you see something missing or inaccurate about the weather in Washington DC ? Feel ...\u001b[0m\n",
"Thought:\u001b[32;1m\u001b[1;3mI now know the weather in Washington DC on 2025-12-06 is Cloudy- Light rain is expected.\n",
"Final Answer: Yes, you should probably take an umbrella with you today.\u001b[0m\n",
"\n",
"\u001b[1m> Finished chain.\u001b[0m\n"
]
@@ -1061,10 +1086,10 @@
"data": {
"text/plain": [
"{'input': \"\\n System: You are not good at determining dates and times. When you are asked about weather reports, you should first make sure you know what date is being asked about.\\n If you are asked about weather and a day was not specified, you should use the date_tool to get today's date and then use the duckduckgo_tool to find out the weather for the date.\\n When asking about weather, you should always include the date in your search for weather so you get the weather report for the correct date.\\n\\n Human: I am in Washington DC. Will I need an umbrella today?\\n \",\n",
" 'output': 'Cloudy- Light rain is expected.'}"
" 'output': 'Yes, you should probably take an umbrella with you today.'}"
]
},
"execution_count": 28,
"execution_count": 12,
"metadata": {},
"output_type": "execute_result"
}
@@ -1094,7 +1119,7 @@
},
{
"cell_type": "code",
"execution_count": 29,
"execution_count": 13,
"metadata": {},
"outputs": [],
"source": [
@@ -1115,7 +1140,7 @@
},
{
"cell_type": "code",
"execution_count": 30,
"execution_count": 14,
"metadata": {},
"outputs": [
{
@@ -1130,7 +1155,7 @@
{
"data": {
"text/markdown": [
"I don't know. The provided context discusses securing remote access software and incident root cause analysis, but it does not contain information about LummaC2."
"LummaC2 is an (infostealer) malware that is able to infiltrate victim computer networks and exfiltrate sensitive information. It has been associated with infections from November 2023 through May 2025 and has been observed threatening vulnerable individuals’ and organizations’ computer networks across multiple U.S. critical infrastructure sectors."
],
"text/plain": [
"<IPython.core.display.Markdown object>"
@@ -1145,7 +1170,8 @@
"text": [
"\n",
"Sources:\n",
"clickfix-attacks-sector-alert-tlpclear.pdf, Page 1\n",
"aa25-141b-threat-actors-deploy-lummac2-malware-to-exfiltrate-sensitive-data-from-organizations.pdf, Page 1\n",
"aa25-141b-threat-actors-deploy-lummac2-malware-to-exfiltrate-sensitive-data-from-organizations.pdf, Page 7\n",
"\n",
"Question: What is a ClickFix?\n"
]
@@ -1153,7 +1179,30 @@
{
"data": {
"text/markdown": [
"I don’t know. The provided context does not contain information about ClickFix."
"ClickFix is a tactic that involves deceiving users into downloading and running malware on their machines. It’s used in malware distribution campaigns involving compromised websites, malicious distribution infrastructure, and e-mail phishing. It bypasses web browser security features and appears less suspicious to users."
],
"text/plain": [
"<IPython.core.display.Markdown object>"
]
},
"metadata": {},
"output_type": "display_data"
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Sources:\n",
"clickfix-attacks-sector-alert-tlpclear.pdf, Page 0\n",
"\n",
"Question: Why is the sky blue?\n"
]
},
{
"data": {
"text/markdown": [
"I don’t know. The provided context discusses the Traffic Light Protocol (TLP) and TSI, but doesn’t contain information about why the sky is blue."
],
"text/plain": [
"<IPython.core.display.Markdown object>"
@@ -1169,35 +1218,12 @@
"\n",
"Sources:\n",
"clickfix-attacks-sector-alert-tlpclear.pdf, Page 1\n",
"\n",
"Question: Why is the sky blue?\n"
]
},
{
"data": {
"text/markdown": [
"I do not know. The provided context discusses IT and OT network configurations and cloud portals, not the reason why the sky is blue."
],
"text/plain": [
"<IPython.core.display.Markdown object>"
]
},
"metadata": {},
"output_type": "display_data"
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Sources:\n",
"ts_10399402v010101p.pdf, Page 9\n"
"joint-guidance-enhanced-visibility-hardening-guide-for-comms-infrastructure-508c_0.pdf, Page 0\n"
]
}
],
"source": [
"from langchain_community.llms import Ollama\n",
"from langchain_community.embeddings import OllamaEmbeddings\n",
"from langchain_ollama import OllamaEmbeddings, OllamaLLM\n",
"from langchain.text_splitter import RecursiveCharacterTextSplitter\n",
"from langchain_community.vectorstores import Chroma\n",
"from langchain_core.prompts import PromptTemplate\n",
@@ -1219,7 +1245,7 @@
"\n",
"# 🔧 Embeddings model: add num_ctx and base_url\n",
"embedding_model = OllamaEmbeddings(\n",
" model=\"nomic-embed-text\",\n",
" model=\"embeddinggemma\",\n",
" base_url=\"http://localhost:11434\",\n",
" num_ctx=2048, # <= keep context modest to avoid crashes\n",
" # you could even try 1024 if needed\n",
@@ -1262,6 +1288,7 @@
"# print(i, len(d.page_content))\n",
"\n",
"# Create ChromaDB vector store (persists locally)\n",
"os.makedirs(\"./chroma_llm_training\", exist_ok=True)\n",
"vectordb = Chroma.from_documents(\n",
" documents=data_splits,\n",
" embedding=embedding_model,\n",
+47 -30
View File
@@ -24,7 +24,7 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 1,
"id": "2770431f",
"metadata": {},
"outputs": [],
@@ -35,12 +35,12 @@
"\n",
"# Required Ollama models - ensure these are installed:\n",
"# ollama pull gemma3\n",
"# ollama pull nomic-embed-text"
"# ollama pull embeddinggemma"
]
},
{
"cell_type": "code",
"execution_count": 6,
"execution_count": 2,
"id": "1de79a00",
"metadata": {},
"outputs": [],
@@ -64,7 +64,7 @@
" \"txt\": \"TextLoader\",\n",
"}\n",
"\n",
"EMBEDDING_MODEL = \"nomic-embed-text\"\n",
"EMBEDDING_MODEL = \"embeddinggemma\"\n",
"LLM_MODEL = \"gemma3\"\n",
"\n",
"\n",
@@ -138,19 +138,35 @@
"\n",
"# --- Vector Store Build ---\n",
"def build_vectordb(docs, embedding_model, persist_dir):\n",
" import shutil\n",
" assert_directory_writable(persist_dir)\n",
" chunks = split_documents(docs)\n",
" vectordb = Chroma.from_documents(\n",
" documents=chunks,\n",
" embedding=embedding_model,\n",
" persist_directory=persist_dir,\n",
" )\n",
" try:\n",
" vectordb = Chroma.from_documents(\n",
" documents=chunks,\n",
" embedding=embedding_model,\n",
" persist_directory=persist_dir,\n",
" )\n",
" except Exception as e:\n",
" if \"Database error\" in str(e) or \"readonly\" in str(e):\n",
" print(f\"⚠️ Corrupted database, recreating...\")\n",
" shutil.rmtree(persist_dir, ignore_errors=True)\n",
" os.makedirs(persist_dir, exist_ok=True)\n",
" vectordb = Chroma.from_documents(\n",
" documents=chunks,\n",
" embedding=embedding_model,\n",
" persist_directory=persist_dir,\n",
" )\n",
" else:\n",
" raise\n",
" print(f\"✅ VectorDB built at: {persist_dir}\")\n",
" return vectordb\n",
"\n",
"\n",
"# --- Vector Store Load ---\n",
"def load_vectordb(persist_dir, embedding_model):\n",
" if not os.path.exists(persist_dir):\n",
" raise FileNotFoundError(f\"❌ VectorDB directory not found: {persist_dir}. Run with build=True first.\")\n",
" vectordb = Chroma(\n",
" persist_directory=persist_dir,\n",
" embedding_function=embedding_model,\n",
@@ -252,7 +268,7 @@
},
{
"cell_type": "code",
"execution_count": 7,
"execution_count": 3,
"id": "70fd9668",
"metadata": {},
"outputs": [
@@ -261,14 +277,14 @@
"output_type": "stream",
"text": [
"🚀 Initializing pipeline...\n",
"✅ Embedding model 'nomic-embed-text' is ready\n"
"✅ Embedding model 'embeddinggemma' is ready\n"
]
},
{
"name": "stderr",
"output_type": "stream",
"text": [
"100%|██████████| 20/20 [00:00<00:00, 20.93it/s]\n"
"100%|██████████| 20/20 [00:00<00:00, 21.88it/s]\n"
]
},
{
@@ -291,7 +307,7 @@
"name": "stderr",
"output_type": "stream",
"text": [
"100%|██████████| 8/8 [00:02<00:00, 2.91it/s]\n"
"100%|██████████| 8/8 [00:02<00:00, 3.53it/s]\n"
]
},
{
@@ -347,7 +363,7 @@
},
{
"cell_type": "code",
"execution_count": 8,
"execution_count": 4,
"id": "64058cb9",
"metadata": {},
"outputs": [
@@ -356,7 +372,7 @@
"output_type": "stream",
"text": [
"🚀 Initializing pipeline...\n",
"✅ Embedding model 'nomic-embed-text' is ready\n",
"✅ Embedding model 'embeddinggemma' is ready\n",
"✅ VectorDB loaded from: ./chromadb_store\n",
"🤖 LLM ready: gemma3\n",
"\n",
@@ -368,7 +384,7 @@
"text/markdown": [
"**Answer:**\n",
"\n",
"I don't know. The provided context discusses security aspects of software products, including Safe Browsing, Google Play Protect, and the absence of unsafe functions. It does not contain any information about pickles."
"I don't know. The provided context is about computer science terms like locks, singletons, nested functions, and endianness. It doesn't contain information about why pickles might be bad."
],
"text/plain": [
"<IPython.core.display.Markdown object>"
@@ -384,7 +400,6 @@
"\n",
"📄 Sources:\n",
"Tutorial-4-MultipleConnections.md, Page N/A\n",
"guidance-mobile-communications-best-practices.pdf, Page 3\n",
"\n",
"❓ Question: What is a ClickFix?\n"
]
@@ -394,7 +409,7 @@
"text/markdown": [
"**Answer:**\n",
"\n",
"I don't know. The provided context discusses Singletons, Endianess, Locks, and Certificate Verification, but doesn’t contain information about ClickFix."
"ClickFix is a tactic that involves deceiving users into downloading and running malware on their machines. It’s used to distribute malware like remote access trojans and infostealers, bypassing web browser security features. It’s been used in campaigns involving compromised websites and phishing emails, starting in early March 2024."
],
"text/plain": [
"<IPython.core.display.Markdown object>"
@@ -409,7 +424,7 @@
"text": [
"\n",
"📄 Sources:\n",
"Tutorial-7-PythonNetworkingExpansion.md, Page N/A\n",
"clickfix-attacks-sector-alert-tlpclear.pdf, Page 0\n",
"\n",
"❓ Question: What is LummaC2?\n"
]
@@ -419,7 +434,7 @@
"text/markdown": [
"**Answer:**\n",
"\n",
"I don't know. The context provided only discusses Singletons, Endianess, Locks, and Certificate Verification. It does not contain information about LummaC2."
"LummaC2 is an (infostealer) malware that is able to infiltrate victim computer networks and exfiltrate sensitive information. It has been associated with infections from November 2023 through May 2025 and has been observed targeting vulnerable individuals’ and organizations’ computer networks across multiple U.S. critical infrastructure sectors."
],
"text/plain": [
"<IPython.core.display.Markdown object>"
@@ -434,7 +449,8 @@
"text": [
"\n",
"📄 Sources:\n",
"Tutorial-7-PythonNetworkingExpansion.md, Page N/A\n"
"aa25-141b-threat-actors-deploy-lummac2-malware-to-exfiltrate-sensitive-data-from-organizations.pdf, Page 1\n",
"aa25-141b-threat-actors-deploy-lummac2-malware-to-exfiltrate-sensitive-data-from-organizations.pdf, Page 7\n"
]
}
],
@@ -490,7 +506,7 @@
},
{
"cell_type": "code",
"execution_count": 9,
"execution_count": 5,
"id": "148d2858",
"metadata": {},
"outputs": [],
@@ -507,7 +523,7 @@
"\n",
"# Config\n",
"CHROMA_DIR = \"./chromadb_store\"\n",
"EMBEDDING_MODEL = \"nomic-embed-text\"\n",
"EMBEDDING_MODEL = \"embeddinggemma\"\n",
"LLM_MODEL = \"gemma3\"\n",
"\n",
"# Prompt template\n",
@@ -556,7 +572,7 @@
},
{
"cell_type": "code",
"execution_count": 10,
"execution_count": 6,
"id": "edfcf6b8",
"metadata": {},
"outputs": [
@@ -573,7 +589,7 @@
"text/markdown": [
"**Answer:**\n",
"\n",
"I don't know. The provided context discusses Singletons, Endianess, Locks, and Certificate Verification, but doesn’t contain information about ClickFix."
"ClickFix is a tactic that involves deceiving users into downloading and running malware on their machines. It utilizes compromised websites and phishing emails to distribute malware like remote access trojans and infostealers. It bypasses web browser security features and appears less suspicious to users."
],
"text/plain": [
"<IPython.core.display.Markdown object>"
@@ -588,7 +604,7 @@
"text": [
"\n",
"📄 Sources:\n",
"Tutorial-7-PythonNetworkingExpansion.md, Page N/A\n",
"clickfix-attacks-sector-alert-tlpclear.pdf, Page 0\n",
"\n",
"❓ Question: What is LummaC2?\n"
]
@@ -598,7 +614,7 @@
"text/markdown": [
"**Answer:**\n",
"\n",
"I don't know. The provided context discusses Singletons, Endianess, Locks, and Certificate Verification – it doesn’t contain information about LummaC2."
"LummaC2 is an (infostealer) malware that is able to infiltrate victim computer networks and exfiltrate sensitive information. It has been associated with infections from November 2023 through May 2025 and has been observed threatening vulnerable individuals’ and organizations’ computer networks across multiple U.S. critical infrastructure sectors."
],
"text/plain": [
"<IPython.core.display.Markdown object>"
@@ -613,7 +629,8 @@
"text": [
"\n",
"📄 Sources:\n",
"Tutorial-7-PythonNetworkingExpansion.md, Page N/A\n",
"aa25-141b-threat-actors-deploy-lummac2-malware-to-exfiltrate-sensitive-data-from-organizations.pdf, Page 1\n",
"aa25-141b-threat-actors-deploy-lummac2-malware-to-exfiltrate-sensitive-data-from-organizations.pdf, Page 7\n",
"\n",
"❓ Question: Why is the sky blue?\n"
]
@@ -623,7 +640,7 @@
"text/markdown": [
"**Answer:**\n",
"\n",
"I don't know. The context provided discusses Sekoia, Singletons, Endianess, and Locks, none of which relate to the color of the sky."
"I don’t know. The context provided discusses concepts like endianness, locks, certificate verification, and singletons, none of which relate to the color of the sky."
],
"text/plain": [
"<IPython.core.display.Markdown object>"
@@ -639,7 +656,7 @@
"\n",
"📄 Sources:\n",
"Tutorial-4-MultipleConnections.md, Page N/A\n",
"clickfix-attacks-sector-alert-tlpclear.pdf, Page 1\n"
"Tutorial-7-PythonNetworkingExpansion.md, Page N/A\n"
]
}
],