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Linux Service Started Or Enabled

The following analytic detects the creation or enabling of services on Linux platforms using the systemctl or service tools. It leverages Endpoint Detection and Response (EDR) logs, focusing on process names, parent processes, and command-line executions. This activity is significant as adversaries may create or modify services to maintain persistence or execute malicious payloads. If confirmed malicious, this behavior could lead to persistent access, data theft, ransomware deployment, or other damaging outcomes. Monitoring and investigating such activities are crucial for maintaining the security and integrity of the environment.

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Detection Logic

| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime 
FROM datamodel=Endpoint.Processes
  
WHERE (
        Processes.process_name IN ("systemctl", "service")
        
OR
        Processes.process IN ("*systemctl *", "*service *")
    )
    Processes.process IN ("* start *", "* enable *") 
AND NOT (Processes.os="Microsoft Windows" 
OR Processes.vendor_product="Microsoft Windows")
  BY Processes.action Processes.dest Processes.original_file_name
     Processes.parent_process Processes.parent_process_exec Processes.parent_process_guid
     Processes.parent_process_id Processes.parent_process_name Processes.parent_process_path
     Processes.process Processes.process_exec Processes.process_guid
     Processes.process_hash Processes.process_id Processes.process_integrity_level
     Processes.process_name Processes.process_path Processes.user
     Processes.user_id Processes.vendor_product
| `drop_dm_object_name(Processes)`
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `linux_service_started_or_enabled_filter`

False Positives

⚠ Administrator or network operator can use this commandline for automation purposes. Please update the filter macros to remove false positives.

Field Validations

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