Detectionmediumtest

Potential Persistence Attempt Via Run Keys Using Reg.EXE

Detects suspicious command line reg.exe tool adding key to RUN key in Registry

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Florian Roth (Nextron Systems), Swachchhanda Shrawan Poudel (Nextron Systems)Created Mon Jun 28Updated Mon Feb 17de587dce-915e-4218-aac4-835ca6af6f70windows

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:
    selection:
        Image|endswith: '\reg.exe'
        CommandLine|contains|all:
            - 'reg'
            - ' add '
        CommandLine|contains:
            - 'Software\Microsoft\Windows\CurrentVersion\Run'
            - '\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run'
            - '\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run'
    condition: selection