Persistence via Kernel Module Modification

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Persistence via Kernel Module Modification

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Identifies loadable kernel module errors, which are often indicative of potential persistence attempts.

Rule type: query

Rule indices:

  • auditbeat-*

Severity: low

Risk score: 21

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum signals per execution: 100

References:

Tags:

  • Elastic
  • Linux

Version: 2 (version history)

Added (Elastic Stack release): 7.6.0

Last modified (Elastic Stack release): 7.7.0

Potential false positives

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Security tools and device drivers may run these programs in order to load legitimate kernel modules. Use of these programs by ordinary users is uncommon.

Rule query

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process.name:(insmod or kmod or modprobe or rmod) and
event.action:executed

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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Version 2 (7.7.0 release)

Updated query, changed from:

process.name: (insmod or kmod or modprobe or rmod) and
event.action:executed