UAC Bypass Tools Using ComputerDefaults

Description

Detects tools such as UACMe used to bypass UAC with computerdefaults.exe (UACMe 59)

Query · sigma

selection:
  IntegrityLevel:
  - High
  - System
  - S-1-16-16384
  - S-1-16-12288
  Image: C:\Windows\System32\ComputerDefaults.exe
filter:
  ParentImage|contains:
  - :\Windows\System32
  - :\Program Files
condition: selection and not filter

Known false positives

  • Unknown
Raw source UAC Bypass Tools Using ComputerDefaults · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: UAC Bypass Tools Using ComputerDefaults
id: 3c05e90d-7eba-4324-9972-5d7f711a60a8
status: test
description: Detects tools such as UACMe used to bypass UAC with computerdefaults.exe (UACMe 59)
references:
    - https://github.com/hfiref0x/UACME
author: Christian Burkard (Nextron Systems)
date: 2021-08-31
modified: 2024-12-01
tags:
    - attack.privilege-escalation
    - attack.t1548.002
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        IntegrityLevel:
            - 'High'
            - 'System'
            - 'S-1-16-16384' # System
            - 'S-1-16-12288' # High
        Image: 'C:\Windows\System32\ComputerDefaults.exe'
    filter:
        ParentImage|contains:
            - ':\Windows\System32'
            - ':\Program Files'
    condition: selection and not filter
falsepositives:
    - Unknown
level: high

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