Detectionhightest
Potential appverifUI.DLL Sideloading
Detects potential DLL sideloading of "appverifUI.dll"
Convert In Phoenix Studio
Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
Launch
Log Source
WindowsImage Load (DLL)
ProductWindows← raw: windows
CategoryImage Load (DLL)← raw: image_load
Detection Logic
Detection Logic2 selectors
detection:
selection:
ImageLoaded|endswith: '\appverifUI.dll'
filter_main_legit_path:
Image:
- 'C:\Windows\SysWOW64\appverif.exe'
- 'C:\Windows\System32\appverif.exe'
ImageLoaded|startswith:
- 'C:\Windows\System32\'
- 'C:\Windows\SysWOW64\'
- 'C:\Windows\WinSxS\'
condition: selection and not 1 of filter_main_*False Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
References
MITRE ATT&CK
Rule Metadata
Rule ID
ee6cea48-c5b6-4304-a332-10fc6446f484
Status
test
Level
high
Type
Detection
Created
Tue Jun 20
Path
rules/windows/image_load/image_load_side_load_appverifui.yml
Raw Tags
attack.persistenceattack.defense-evasionattack.privilege-escalationattack.t1574.001