Detectionhightest
UAC Bypass Using Windows Media Player - Process
Detects the pattern of UAC Bypass using Windows Media Player osksupport.dll (UACMe 32)
Convert In Phoenix Studio
Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
Launch
Christian Burkard (Nextron Systems)Created Mon Aug 23Updated Sun Dec 010058b9e5-bcd7-40d4-9205-95ca5a16d7b2windows
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic3 selectors
detection:
selection_img_1:
Image: 'C:\Program Files\Windows Media Player\osk.exe'
selection_img_2:
Image: 'C:\Windows\System32\cmd.exe'
ParentCommandLine: '"C:\Windows\system32\mmc.exe" "C:\Windows\system32\eventvwr.msc" /s'
selection_integrity:
IntegrityLevel:
- 'High'
- 'System'
- 'S-1-16-16384' # System
- 'S-1-16-12288' # High
condition: 1 of selection_img_* and selection_integrityFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Rule Metadata
Rule ID
0058b9e5-bcd7-40d4-9205-95ca5a16d7b2
Status
test
Level
high
Type
Detection
Created
Mon Aug 23
Modified
Sun Dec 01
Path
rules/windows/process_creation/proc_creation_win_uac_bypass_wmp.yml
Raw Tags
attack.defense-evasionattack.privilege-escalationattack.t1548.002