Modification of Dynamic Linker Preload Shared Objectedit

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: 5m

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: 2

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule queryedit

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

Framework: MITRE ATT&CKTM