Vulnerable Driver Blocklist Registry Tampering Via CommandLine
Detects tampering of the Vulnerable Driver Blocklist registry via command line tools such as PowerShell or REG.EXE. The Vulnerable Driver Blocklist is a security feature that helps prevent the loading of known vulnerable drivers. Disabling this feature may indicate an attempt to bypass security controls, often targeted by threat actors to facilitate the installation of malicious or vulnerable drivers, particularly in scenarios involving Endpoint Detection and Response
Convert In Phoenix Studio
Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
detection:
selection_img:
- Image|endswith:
- '\powershell.exe'
- '\pwsh.exe'
- '\reg.exe'
- OriginalFileName:
- 'PowerShell.EXE'
- 'pwsh.dll'
- 'reg.exe'
selection_cli_1:
CommandLine|contains:
- 'add '
- 'New-ItemProperty '
- 'Set-ItemProperty '
- 'si ' # SetItem Alias
selection_cli_2:
CommandLine|contains|all:
- '\Control\CI\Config'
- 'VulnerableDriverBlocklistEnable'
condition: all of selection_*It is very unlikely for legitimate activities to disable the Vulnerable Driver Blocklist via command line tools; thus it is recommended to investigate promptly.
Tactics
Sub-techniques