
title: UAC Bypass Using ChangePK and SLUI
author: Christian Burkard
date: 2021/08/23
description: Detects an UAC bypass that uses changepk.exe and slui.exe (UACMe 61)
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    Image: '*\changepk.exe'
  SELECTION_3:
    ParentImage: '*\slui.exe'
  SELECTION_4:
    IntegrityLevel:
    - High
    - System
  condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and SELECTION_4)
falsepositives:
- Unknown
id: 503d581c-7df0-4bbe-b9be-5840c0ecc1fc
level: high
logsource:
  category: process_creation
  product: windows
references:
- https://mattharr0ey.medium.com/privilege-escalation-uac-bypass-in-changepk-c40b92818d1b
- https://github.com/hfiref0x/UACME
- https://medium.com/falconforce/falconfriday-detecting-uac-bypasses-0xff16-86c2a9107abf
status: experimental
tags:
- attack.defense_evasion
- attack.privilege_escalation
- attack.t1548.002
ruletype: SIGMA
