Detectionmediumtest

Disable Internal Tools or Feature in Registry

Detects registry modifications that change features of internal Windows tools (malware like Agent Tesla uses this technique)

Convert In Phoenix Studio

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

Launch

François Hubaut, Nasreddine Bencherchali (Nextron Systems), CrimpSecCreated Fri Mar 18Updated Wed Jun 04e2482f8d-3443-4237-b906-cc145d87a076windows

Log Source

WindowsRegistry Set

ProductWindows← raw: windows

CategoryRegistry Set← raw: registry_set

Detection Logic

detection:
    selection_set_1:
        TargetObject|endswith:
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisableCMD'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoControlPanel'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoRun'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\StartMenuLogOff'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableChangePassword'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableLockWorkstation'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableTaskmgr'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\NoDispBackgroundPage'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\NoDispCPL'
            - 'SOFTWARE\Policies\Microsoft\Windows\Explorer\DisableNotificationCenter'
            - 'SOFTWARE\Policies\Microsoft\Windows\System\DisableCMD'
        Details: 'DWORD (0x00000001)'
    selection_set_0:
        TargetObject|endswith:
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin'
            - 'Software\Microsoft\Windows\CurrentVersion\Policies\System\InactivityTimeoutSecs'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\shutdownwithoutlogon'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\PushNotifications\ToastEnabled'
            - 'SYSTEM\CurrentControlSet\Control\Storage\Write Protection'
            - 'SYSTEM\CurrentControlSet\Control\StorageDevicePolicies\WriteProtect'
        Details: 'DWORD (0x00000000)'
    condition: 1 of selection_set_*