mirror of
https://github.com/splunk/security_content
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Bhavin Patel
86 lines
3.8 KiB
YAML
86 lines
3.8 KiB
YAML
name: Office Product Spawning BITSAdmin
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id: e8c591f4-a6d7-11eb-8cf7-acde48001122
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version: 6
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date: '2024-05-11'
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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 detects any Windows Office Product spawning `bitsadmin.exe`,
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a behavior often associated with malware families like TA551 and IcedID. This detection
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leverages data from Endpoint Detection and Response (EDR) agents, focusing on process
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and parent process relationships. This activity is significant because `bitsadmin.exe`
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is commonly used for malicious file transfers, potentially indicating a malware
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infection. If confirmed malicious, this activity could allow attackers to download
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additional payloads, escalate privileges, or establish persistence, leading to further
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compromise of the affected system.
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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.parent_process_name
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IN ("winword.exe","excel.exe","powerpnt.exe","mspub.exe","visio.exe","onenote.exe","onenotem.exe","onenoteviewer.exe","onenoteim.exe",
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"msaccess.exe", "Graph.exe","winproj.exe") `process_bitsadmin` by Processes.dest
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Processes.user Processes.parent_process_name Processes.parent_process Processes.process_name
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Processes.original_file_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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| `office_product_spawning_bitsadmin_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: No false positives known. Filter as needed.
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1197/T1197.md
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- https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/trojanized-onenote-document-leads-to-formbook-malware/
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tags:
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analytic_story:
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- Spearphishing Attachments
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- CVE-2023-36884 Office and Windows HTML RCE Vulnerability
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asset_type: Endpoint
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confidence: 90
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impact: 70
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message: office parent process $parent_process_name$ will execute a suspicious child
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process $process_name$ with process id $process_id$ in host $dest$
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mitre_attack_id:
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- T1566
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- T1566.001
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observable:
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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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- name: process_name
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type: Process
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role:
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- Attacker
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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.parent_process_name
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- Processes.parent_process
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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: 63
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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/T1566.001/macro/windows-sysmon_macros.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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