UAC Bypass Abusing Winsat Path Parsing - Process

 1title: UAC Bypass Abusing Winsat Path Parsing - Process
 2id: 7a01183d-71a2-46ad-ad5c-acd989ac1793
 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.defense-evasion
12    - attack.privilege-escalation
13    - attack.t1548.002
14logsource:
15    category: process_creation
16    product: windows
17detection:
18    selection:
19        IntegrityLevel:
20            - 'High'
21            - 'System'
22        ParentImage|endswith: '\AppData\Local\Temp\system32\winsat.exe'
23        ParentCommandLine|contains: 'C:\Windows \system32\winsat.exe'
24    condition: selection
25falsepositives:
26    - Unknown
27level: high

References

• GitHub - hfiref0x/UACME: Defeating Windows User Account Control

  

  Defeating Windows User Account Control. Contribute to hfiref0x/UACME development by creating an account on GitHub.

  
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• CMSTP UAC Bypass via COM Object Access