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: 2024-12-01
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            - 'S-1-16-16384' # System
23            - 'S-1-16-12288' # High
24        ParentImage|endswith: '\AppData\Local\Temp\system32\winsat.exe'
25        ParentCommandLine|contains: 'C:\Windows \system32\winsat.exe'
26    condition: selection
27falsepositives:
28    - Unknown
29level: high