UAC Bypass Using Windows Media Player - Process

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

Sigma rule (View on GitHub)

 1title: UAC Bypass Using Windows Media Player - Process
 2id: 0058b9e5-bcd7-40d4-9205-95ca5a16d7b2
 3status: test
 4description: Detects the pattern of UAC Bypass using Windows Media Player osksupport.dll (UACMe 32)
 5references:
 6    - https://github.com/hfiref0x/UACME
 7author: Christian Burkard (Nextron Systems)
 8date: 2021-08-23
 9modified: 2024-12-01
10tags:
11    - attack.privilege-escalation
12    - attack.t1548.002
13logsource:
14    category: process_creation
15    product: windows
16detection:
17    selection_img_1:
18        Image: 'C:\Program Files\Windows Media Player\osk.exe'
19    selection_img_2:
20        Image: 'C:\Windows\System32\cmd.exe'
21        ParentCommandLine: '"C:\Windows\system32\mmc.exe" "C:\Windows\system32\eventvwr.msc" /s'
22    selection_integrity:
23        IntegrityLevel:
24            - 'High'
25            - 'System'
26            - 'S-1-16-16384' # System
27            - 'S-1-16-12288' # High
28    condition: 1 of selection_img_* and selection_integrity
29falsepositives:
30    - Unknown
31level: high

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