cscli scenarios install sigmahq/proc_creation_win_reg_windows_defender_tamper1type: trigger2name: sigmahq/proc_creation_win_reg_windows_defender_tamper3description: |4 Detects the usage of "reg.exe" to tamper with different Windows Defender registry keys in order to disable some important features related to protection and detection5filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\reg.exe' || evt.Parsed.OriginalFileName == 'reg.exe') && (evt.Parsed.CommandLine contains 'SOFTWARE\\Microsoft\\Windows Defender\\' || evt.Parsed.CommandLine contains 'SOFTWARE\\Policies\\Microsoft\\Windows Defender Security Center' || evt.Parsed.CommandLine contains 'SOFTWARE\\Policies\\Microsoft\\Windows Defender\\') && (evt.Parsed.CommandLine contains ' add ' && evt.Parsed.CommandLine contains 'd 0' && (evt.Parsed.CommandLine contains 'DisallowExploitProtectionOverride' || evt.Parsed.CommandLine contains 'EnableControlledFolderAccess' || evt.Parsed.CommandLine contains 'MpEnablePus' || evt.Parsed.CommandLine contains 'PUAProtection' || evt.Parsed.CommandLine contains 'SpynetReporting' || evt.Parsed.CommandLine contains 'SubmitSamplesConsent' || evt.Parsed.CommandLine contains 'TamperProtection') || evt.Parsed.CommandLine contains ' add ' && evt.Parsed.CommandLine contains 'd 1' && (evt.Parsed.CommandLine contains 'DisableAntiSpyware' || evt.Parsed.CommandLine contains 'DisableAntiSpywareRealtimeProtection' || evt.Parsed.CommandLine contains 'DisableAntiVirus' || evt.Parsed.CommandLine contains 'DisableArchiveScanning' || evt.Parsed.CommandLine contains 'DisableBehaviorMonitoring' || evt.Parsed.CommandLine contains 'DisableBlockAtFirstSeen' || evt.Parsed.CommandLine contains 'DisableConfig' || evt.Parsed.CommandLine contains 'DisableEnhancedNotifications' || evt.Parsed.CommandLine contains 'DisableIntrusionPreventionSystem' || evt.Parsed.CommandLine contains 'DisableIOAVProtection' || evt.Parsed.CommandLine contains 'DisableOnAccessProtection' || evt.Parsed.CommandLine contains 'DisablePrivacyMode' || evt.Parsed.CommandLine contains 'DisableRealtimeMonitoring' || evt.Parsed.CommandLine contains 'DisableRoutinelyTakingAction' || evt.Parsed.CommandLine contains 'DisableScanOnRealtimeEnable' || evt.Parsed.CommandLine contains 'DisableScriptScanning' || evt.Parsed.CommandLine contains 'Notification_Suppress' || evt.Parsed.CommandLine contains 'SignatureDisableUpdateOnStartupWithoutEngine')))7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:14 - attack.t1562.0011516 label: "Suspicious Windows Defender Registry Key Tampering Via Reg.EXE"17 behavior : "windows:audit"18 remediation: false1920scope:21 type: ParentProcessId22 expression: evt.Parsed.ParentProcessId2324