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    Storm 2603 GPO Modification For Defense Evasion

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    GlassDiceBearhttps://www.dicebear.comhttps://creativecommons.org/publicdomain/zero/1.0/„Glass” (https://www.dicebear.com) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)
    Tim Peck@timpeck
    •updated Oct 9, 2025•1•0•92

    Detects PowerShell being used to modify Group Policy Objects (GPOs) to disable Windows Defender security features. This technique is used by threat actors like Storm-2603 for defense evasion.

    YARA-L

    Tags

    G1046 - Storm-1811T1484.001 - Group Policy ModificationT1562 - Impair DefensesTA0005 - Defense EvasionTA0004 - Privilege EscalationPowershell Script ExecutionCommand ExecutionRegistry Value SetPolicy ChangeWindowsWindows Eventlog PowershellWindows Defender AvWindows SysmonCRIMERANSOMWARESTORM-2603POWERSHELLDEFENSE_EVASION

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