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Elastic Docs ›Elastic Security Solution [8.4] ›Detections and alerts ›Prebuilt rule reference

Attempt to Disable Syslog Service

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Attempt to Disable Syslog Service

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Adversaries may attempt to disable the syslog service in an attempt to an attempt to disrupt event logging and evade detection by security controls.

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

Tags:

  • Elastic
  • Host
  • Linux
  • Threat Detection
  • Defense Evasion

Version: 8 (version history)

Added (Elastic Stack release): 7.8.0

Last modified (Elastic Stack release): 8.4.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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event.category:process and event.type:(start or process_started) and
((process.name:service and process.args:stop) or
(process.name:chkconfig and process.args:off) or
(process.name:systemctl and process.args:(disable or stop or kill)))
and process.args:(syslog or rsyslog or "syslog-ng")

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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Version 8 (8.4.0 release)
  • Formatting only
Version 7 (7.12.0 release)
  • Formatting only
Version 6 (7.11.2 release)
  • Formatting only
Version 5 (7.11.0 release)
  • Formatting only
Version 4 (7.10.0 release)
  • Formatting only
Version 3 (7.9.1 release)
  • Formatting only
Version 2 (7.9.0 release)

  • Updated query, changed from:

    event.action:(executed or process_started) and ((process.name:service
and process.args:stop) or (process.name:chkconfig and
process.args:off) or (process.name:systemctl and process.args:(disable
or stop or kill))) and process.args:(syslog or rsyslog or "syslog-ng")
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