UAC Bypass Abusing Winsat Path Parsing - Registry

 1title: UAC Bypass Abusing Winsat Path Parsing - Registry
 2id: 6597be7b-ac61-4ac8-bef4-d3ec88174853
 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: 2023-08-17
10tags:
11    - attack.defense-evasion
12    - attack.privilege-escalation
13    - attack.t1548.002
14logsource:
15    category: registry_set
16    product: windows
17detection:
18    selection:
19        TargetObject|contains: '\Root\InventoryApplicationFile\winsat.exe|'
20        TargetObject|endswith: '\LowerCaseLongPath'
21        Details|startswith: 'c:\users\'
22        Details|endswith: '\appdata\local\temp\system32\winsat.exe'
23    condition: selection
24falsepositives:
25    - Unknown
26level: 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.

  
  Read More

Related rules

• Bypass UAC Using DelegateExecute
• Bypass UAC Using SilentCleanup Task
• Bypass UAC via CMSTP
• Bypass UAC via WSReset.exe
• CMSTP UAC Bypass via COM Object Access