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Bypass UAC via Event Viewer

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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&CK^TM

Tactic:
- Name: Privilege Escalation
- ID: TA0004
- Reference URL: https://attack.mitre.org/tactics/TA0004/
Technique:
- Name: Bypass User Account Control
- ID: T1088
- Reference URL: https://attack.mitre.org/techniques/T1088/

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")

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