mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Bhavin Patel
84 lines
3.4 KiB
YAML
84 lines
3.4 KiB
YAML
name: Windows Service Create Kernel Mode Driver
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id: 0b4e3b06-1b2b-4885-b752-cf06d12a90cb
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version: 2
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date: '2024-05-13'
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author: Michael Haag, Splunk
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status: production
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type: TTP
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description: The following analytic identifies the creation of a new kernel mode driver
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using the sc.exe command. This detection leverages data from Endpoint Detection
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and Response (EDR) agents, focusing on process execution logs that include command-line
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details. The activity is significant because adding a kernel driver is uncommon
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in regular operations and can indicate an attempt to gain low-level access to the
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system. If confirmed malicious, this could allow an attacker to execute code with
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high privileges, potentially compromising the entire system and evading traditional
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security measures.
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data_source:
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- Sysmon EventID 1
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Processes where Processes.process_name=sc.exe
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Processes.process="*kernel*" by Processes.dest Processes.user Processes.parent_process_name
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Processes.process_name Processes.process Processes.process_id Processes.parent_process_id
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| `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`
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| `windows_service_create_kernel_mode_driver_filter`'
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how_to_implement: The detection is based on data that originates from Endpoint Detection
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and Response (EDR) agents. These agents are designed to provide security-related
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telemetry from the endpoints where the agent is installed. To implement this search,
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you must ingest logs that contain the process GUID, process name, and parent process.
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Additionally, you must ingest complete command-line executions. These logs must
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be processed using the appropriate Splunk Technology Add-ons that are specific to
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the EDR product. The logs must also be mapped to the `Processes` node of the `Endpoint`
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data model. Use the Splunk Common Information Model (CIM) to normalize the field
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names and speed up the data modeling process.
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known_false_positives: False positives may be present based on common applications
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adding new drivers, however, filter as needed.
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references:
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- https://www.aon.com/cyber-solutions/aon_cyber_labs/yours-truly-signed-av-driver-weaponizing-an-antivirus-driver/
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tags:
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analytic_story:
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- Windows Drivers
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- CISA AA22-320A
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asset_type: Endpoint
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confidence: 80
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impact: 60
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message: Service control, $process_name$, loaded a new kernel mode driver on $dest$
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by $user$.
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mitre_attack_id:
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- T1543.003
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- T1543
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- T1068
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observable:
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- name: user
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type: User
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role:
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- Victim
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- name: dest
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type: Hostname
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role:
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- Victim
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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required_fields:
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- _time
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- Processes.dest
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- Processes.user
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- Processes.original_file_name
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- Processes.process_name
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- Processes.process
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- Processes.process_id
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- Processes.parent_process_path
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- Processes.process_path
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- Processes.parent_process_id
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risk_score: 48
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data:
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https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1068/drivers/sc_kernel.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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update_timestamp: true
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