Detectionmediumtest

Potential Configuration And Service Reconnaissance Via Reg.EXE

Detects the usage of "reg.exe" in order to query reconnaissance information from the registry. Adversaries may interact with the Windows registry to gather information about credentials, the system, configuration, and installed software.

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Launch

Timur Zinniatullin, oscd.communityCreated Mon Oct 21Updated Sun Feb 05970007b7-ce32-49d0-a4a4-fbef016950bdwindows

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_img:
        - Image|endswith: '\reg.exe'
        - OriginalFileName: 'reg.exe'
    selection_flag:
        CommandLine|contains: 'query'
    selection_key:
        CommandLine|contains:
            - 'currentVersion\windows'
            - 'winlogon\'
            - 'currentVersion\shellServiceObjectDelayLoad'
            - 'currentVersion\run' # Also covers the strings "RunOnce", "RunOnceEx" and "runServicesOnce"
            - 'currentVersion\policies\explorer\run'
            - 'currentcontrolset\services'
    condition: all of selection_*