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SigmaHQ Detections

@sigmaHQ
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6,797 detections

Detects suspicious execution of 'Powercfg.exe' to change lock screen timeout
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects suspicious UTF16 and base64 encoded and often obfuscated PowerShell code often used in command lines
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects the use of the Microsoft signed script "CL_mutexverifiers" to proxy the execution of additional PowerShell script commands
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects the presence of reversed PowerShell commands in the CommandLine. This is often used as a method of obfuscation by attackers
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects command lines that indicate unwanted modifications to registry keys that disable important Internet Explorer security features
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects PowerShell downgrade attack by comparing the host versions with the actually used engine version 2.0
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects usage of the built-in PowerShell cmdlet "Enable-WindowsOptionalFeature" used as a Deployment Image Servicing and Management tool.
Similar to DISM.exe, this cmdlet is used to enumerate, install, uninstall, configure, and update features and packages in Windows images
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
000
Detects usage of the "Set-Service" powershell cmdlet to configure a new SecurityDescriptor that allows a service to be hidden from other utilities such as "sc.exe", "Get-Service"...etc. (Works only in powershell 7)
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Adversaries may install a root certificate on a compromised system to avoid warnings when connecting to adversary controlled web servers.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects usage of the "Add-AppxPackage" or it's alias "Add-AppPackage" to install unsigned AppX packages
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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