Threat Huntlowtest

WMI Module Loaded By Uncommon Process

Detects WMI modules being loaded by an uncommon process

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Roberto Rodriguez (Cyb3rWard0g)Created Sat Aug 10Updated Mon Feb 24671bb7e3-a020-4824-a00e-2ee5b55f385ewindows

Hunting Hypothesis

Log Source

WindowsImage Load (DLL)

ProductWindows← raw: windows

CategoryImage Load (DLL)← raw: image_load

Detection Logic

detection:
    selection:
        ImageLoaded|endswith:
            - '\fastprox.dll'
            - '\wbemcomn.dll'
            - '\wbemprox.dll'
            - '\wbemsvc.dll'
            - '\WmiApRpl.dll'
            - '\wmiclnt.dll'
            - '\WMINet_Utils.dll'
            - '\wmiprov.dll'
            - '\wmiutils.dll'
    filter_main_generic:
        Image|contains:
            - ':\Program Files (x86)\'
            - ':\Program Files\'
            - ':\Windows\explorer.exe'
            - ':\Windows\Microsoft.NET\Framework\'
            - ':\Windows\Microsoft.NET\FrameworkArm\'
            - ':\Windows\Microsoft.NET\FrameworkArm64\'
            - ':\Windows\Microsoft.NET\Framework64\'
            - ':\Windows\System32\'
            - ':\Windows\SysWOW64\'
    filter_optional_other:
        Image|endswith:
            - '\WindowsAzureGuestAgent.exe'
            - '\WaAppAgent.exe'
    filter_optional_thor:
        Image|endswith:
            - '\thor.exe'
            - '\thor64.exe'
    filter_optional_defender:
        Image|endswith: '\MsMpEng.exe'
    filter_optional_teams:
        Image|contains:
            - '\Microsoft\Teams\current\Teams.exe'
            - '\Microsoft\Teams\Update.exe'
    filter_optional_sysmon:
        Image|endswith:
            - ':\Windows\Sysmon.exe'
            - ':\Windows\Sysmon64.exe'
    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*