sigmahighHunting

UAC Bypass Using Windows Media Player - Process

Detects the pattern of UAC Bypass using Windows Media Player osksupport.dll (UACMe 32)

MITRE ATT&CK

defense-evasionprivilege-escalation

Detection Query

selection_img_1:
  Image: C:\Program Files\Windows Media Player\osk.exe
selection_img_2:
  Image: C:\Windows\System32\cmd.exe
  ParentCommandLine: '"C:\Windows\system32\mmc.exe" "C:\Windows\system32\eventvwr.msc" /s'
selection_integrity:
  IntegrityLevel:
    - High
    - System
    - S-1-16-16384
    - S-1-16-12288
condition: 1 of selection_img_* and selection_integrity

Author

Christian Burkard (Nextron Systems)

Created

2021-08-23

Data Sources

windowsProcess Creation Events

Platforms

windows

References

https://github.com/hfiref0x/UACME

Tags

attack.defense-evasionattack.privilege-escalationattack.t1548.002

Raw Content

title: UAC Bypass Using Windows Media Player - Process
id: 0058b9e5-bcd7-40d4-9205-95ca5a16d7b2
status: test
description: Detects the pattern of UAC Bypass using Windows Media Player osksupport.dll (UACMe 32)
references:
    - https://github.com/hfiref0x/UACME
author: Christian Burkard (Nextron Systems)
date: 2021-08-23
modified: 2024-12-01
tags:
    - attack.defense-evasion
    - attack.privilege-escalation
    - attack.t1548.002
logsource:
    category: process_creation
    product: windows
detection:
    selection_img_1:
        Image: 'C:\Program Files\Windows Media Player\osk.exe'
    selection_img_2:
        Image: 'C:\Windows\System32\cmd.exe'
        ParentCommandLine: '"C:\Windows\system32\mmc.exe" "C:\Windows\system32\eventvwr.msc" /s'
    selection_integrity:
        IntegrityLevel:
            - 'High'
            - 'System'
            - 'S-1-16-16384' # System
            - 'S-1-16-12288' # High
    condition: 1 of selection_img_* and selection_integrity
falsepositives:
    - Unknown
level: high