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name: UAC bypass via ICMLuaUtil COM interface
id: e6acb300-4c0b-4463-a48c-f6abc55cb079
version: 1.0.0
description: |
Identifies potential User Account Control (UAC) bypass activity through abuse
of the ICMLuaUtil Component Object Model (COM) interface. ICMLuaUtil is an
internal Windows COM interface associated with system configuration and
elevation-related operations. Because it is registered as an auto-elevated COM
object, adversaries can be weaponize it in a manner that results in elevated
execution without triggering a standard UAC consent prompt.
labels:
tactic.id: TA0004
tactic.name: Privilege Escalation
tactic.ref: https://attack.mitre.org/tactics/TA0004/
technique.id: T1548
technique.name: Abuse Elevation Control Mechanism
technique.ref: https://attack.mitre.org/techniques/T1548/
subtechnique.id: T1548.002
subtechnique.name: Bypass User Account Control
subtechnique.ref: https://attack.mitre.org/techniques/T1548/002/
references:
- https://github.com/hfiref0x/UACME
- https://gist.github.com/gavz/afa005dd63044c6974c56fb33fd66475
- https://www.linkedin.com/posts/m-hassoub_eventsimplename-threathunting-uacbypass-activity-7418649556999118848-Cuvd

condition: >
spawn_process and
ps.parent.name ~= 'dllhost.exe' and ps.token.integrity_level = 'HIGH' and
ps.parent.cmdline imatches
(
'*D2E7041B-2927-42FB-8E9F-7CE93B6DC937*',
'*3E5FC7F9-9A51-4367-9063-A120244FBEC7*'
) and
ps.exe not imatches
(
'?:\\Windows\\System32\\WerFault.exe',
'?:\\Windows\\SysWOW64\\WerFault.exe'
)
action:
- name: kill

severity: high

min-engine-version: 3.0.0
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