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Elastic Docs ›Elastic Security Solution [8.2] ›Detections and alerts ›Prebuilt rule reference

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: 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

Version: 3 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 7.15.0

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.

Rule version history

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Version 3 (7.15.0 release)
  • Formatting only
Version 2 (7.12.0 release)
  • Formatting only
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