IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Bypass UAC via Event Viewer
editBypass UAC via Event Viewer
editIdentifies User Account Control (UAC) bypass via eventvwr.exe. Attackers bypass UAC to stealthily execute code with elevated permissions.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
Severity: high
Risk score: 73
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: 10 (version history)
Added (Elastic Stack release): 7.7.0
Last modified (Elastic Stack release): 8.2.0
Rule authors: Elastic
Rule license: Elastic License v2
Investigation guide
edit## Config If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
Rule query
editprocess where event.type in ("start", "process_started") and process.parent.name : "eventvwr.exe" and not process.executable : ("?:\\Windows\\SysWOW64\\mmc.exe", "?:\\Windows\\System32\\mmc.exe", "?:\\Windows\\SysWOW64\\WerFault.exe", "?:\\Windows\\System32\\WerFault.exe")
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Privilege Escalation
- ID: TA0004
- Reference URL: https://attack.mitre.org/tactics/TA0004/
-
Technique:
- Name: Abuse Elevation Control Mechanism
- ID: T1548
- Reference URL: https://attack.mitre.org/techniques/T1548/
Rule version history
edit- Version 10 (8.2.0 release)
-
- Formatting only
- Version 9 (7.15.0 release)
-
- Formatting only
- Version 8 (7.13.0 release)
-
-
Updated query, changed from:
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")
-
- 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:
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")
-