Modification of Dynamic Linker Preload Shared Object

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Modification of Dynamic Linker Preload Shared Object

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Identifies modification of the dynamic linker preload shared object (ld.so.preload). Adversaries may execute malicious payloads by hijacking the dynamic linker used to load libraries.

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

References:

Tags:

  • Elastic
  • Host
  • Linux
  • Threat Detection
  • Privilege Escalation

Version: 3 (version history)

Added (Elastic Stack release): 7.12.0

Last modified (Elastic Stack release): 8.4.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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event.category:file and not event.type:deletion and
file.path:/etc/ld.so.preload

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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Version 3 (8.4.0 release)
  • Formatting only
Version 2 (7.15.0 release)
  • Formatting only