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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Anomalous Linux Compiler Activity

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Anomalous Linux Compiler Activity

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Looks for compiler activity by a user context which does not normally run compilers. This can be the result of ad-hoc software changes or unauthorized software deployment. This can also be due to local privilege elevation via locally run exploits or malware activity.

Rule type: machine_learning

Machine learning job: v3_linux_rare_user_compiler

Machine learning anomaly threshold: 50

Severity: low

Risk score: 21

Runs every: 15 minutes

Searches indices from: now-45m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

Tags:

Elastic
Host
Linux
Threat Detection
ML
Resource Development

Version: 5 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 8.4.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positives

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Uncommon compiler activity can be due to an engineer running a local build on a production or staging instance in the course of troubleshooting or fixing a software issue. ==== Threat mapping

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Resource Development
- ID: TA0042
- Reference URL: https://attack.mitre.org/tactics/TA0042/
Technique:
- Name: Obtain Capabilities
- ID: T1588
- Reference URL: https://attack.mitre.org/techniques/T1588/

Rule version history

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Version 5 (8.4.0 release)

Formatting only

Version 4 (8.3.0 release)

Formatting only

Version 3 (7.15.0 release)

Formatting only

Version 2 (7.12.0 release)

Formatting only

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