IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Deletion of Bash Command Line History

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Deletion of Bash Command Line History

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Adversaries may attempt to clear the bash command line history in an attempt to evade detection or forensic investigations.

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: 3 (version history)

Added (Elastic Stack release): 7.9.0

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:rm AND
process.args:/\/(home\/.{1,255}|root)\/\.bash_history/

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: Clear Command History
- ID: T1146
- Reference URL: https://attack.mitre.org/techniques/T1146/

Rule version history

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Version 3 (7.10.0 release)

Formatting only

Version 2 (7.9.1 release)

Formatting only

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