Detectionhightest
UAC Bypass Abusing Winsat Path Parsing - File
Detects the pattern of UAC Bypass using a path parsing issue in winsat.exe (UACMe 52)
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Christian Burkard (Nextron Systems)Created Mon Aug 30Updated Sun Oct 09155dbf56-e0a4-4dd0-8905-8a98705045e8windows
Log Source
WindowsFile Event
ProductWindows← raw: windows
CategoryFile Event← raw: file_event
Events for file system activity including creation, modification, and deletion.
Detection Logic
Detection Logic1 selector
detection:
selection:
TargetFilename|startswith: 'C:\Users\'
TargetFilename|endswith:
- '\AppData\Local\Temp\system32\winsat.exe'
- '\AppData\Local\Temp\system32\winmm.dll'
condition: selectionFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Rule Metadata
Rule ID
155dbf56-e0a4-4dd0-8905-8a98705045e8
Status
test
Level
high
Type
Detection
Created
Mon Aug 30
Modified
Sun Oct 09
Path
rules/windows/file/file_event/file_event_win_uac_bypass_winsat.yml
Raw Tags
attack.defense-evasionattack.privilege-escalationattack.t1548.002