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Potential Disabling of SELinux

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Potential Disabling of SELinux

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Identifies potential attempts to disable Security-Enhanced Linux (SELinux), which is a Linux kernel security feature that supports access control policies. Adversaries may disable security tools to avoid possible detection of their tools and activities.

Rule type: query

Rule indices:

auditbeat-*
logs-endpoint.events.*

Severity: medium

Risk score: 47

Runs every: 5 minutes

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

Tags:

Elastic
Host
Linux
Threat Detection
Defense Evasion

Version: 4 (version history)

Added (Elastic Stack release): 7.8.0

Last modified (Elastic Stack release): 7.10.0

Rule authors: Elastic

Rule license: Elastic License

Rule query

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event.category:process and event.type:(start or process_started) and
process.name:setenforce and process.args:0

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: Disabling Security Tools
- ID: T1089
- Reference URL: https://attack.mitre.org/techniques/T1089/

Rule version history

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Version 4 (7.10.0 release)

Formatting only

Version 3 (7.9.1 release)

Formatting only

Version 2 (7.9.0 release)

Updated query, changed from:

event.action:executed and process.name:setenforce and process.args:0

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