Bypass UAC via Event Viewer

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Identifies User Account Control (UAC) bypass via eventvwr.exe. Attackers bypass UAC to stealthily execute code with elevated permissions.

Rule type: query

Rule indices:

  • winlogbeat-*
  • logs-endpoint.events.*

Severity: low

Risk score: 21

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
  • Windows
  • Threat Detection
  • Privilege Escalation

Version: 4 (version history)

Added (Elastic Stack release): 7.7.0

Last modified (Elastic Stack release): 7.10.0

Rule authors: Elastic

Rule license: Elastic License

Rule query

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event.category:process and event.type:(start or process_started) and
process.parent.name:eventvwr.exe and not
process.executable:("C:\Windows\SysWOW64\mmc.exe" or
"C:\Windows\System32\mmc.exe")

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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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:

    process.parent.name:eventvwr.exe and event.action:"Process Create
    (rule: ProcessCreate)" and not
    process.executable:("C:\Windows\SysWOW64\mmc.exe" or
    "C:\Windows\System32\mmc.exe")