UAC Bypass Abusing Winsat Path Parsing - File

calendar Apr 28, 2026 · attack.privilege-escalation attack.t1548.002  ·
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Detects the pattern of UAC Bypass using a path parsing issue in winsat.exe (UACMe 52)

Sigma rule (View on GitHub)

 1title: UAC Bypass Abusing Winsat Path Parsing - File
 2id: 155dbf56-e0a4-4dd0-8905-8a98705045e8
 3status: test
 4description: Detects the pattern of UAC Bypass using a path parsing issue in winsat.exe (UACMe 52)
 5references:
 6    - https://github.com/hfiref0x/UACME
 7author: Christian Burkard (Nextron Systems)
 8date: 2021-08-30
 9modified: 2022-10-09
10tags:
11    - attack.privilege-escalation
12    - attack.t1548.002
13logsource:
14    category: file_event
15    product: windows
16detection:
17    selection:
18        TargetFilename|startswith: 'C:\Users\'
19        TargetFilename|endswith:
20            - '\AppData\Local\Temp\system32\winsat.exe'
21            - '\AppData\Local\Temp\system32\winmm.dll'
22    condition: selection
23falsepositives:
24    - Unknown
25level: high

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