SigmaHQ Detections
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6,797 detections
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Detects disabling of the "Automatic Sample Submission" feature of Windows Defender.
Detects process access events where WerFaultSecure accesses MsMpEng.exe with dbgcore.dll or dbghelp.dll in the call trace, indicating potential EDR freeze techniques.
This technique leverages WerFaultSecure.exe running as a Protected Process Light (PPL) with WinTCB protection level to call MiniDumpWriteDump and suspend EDR/AV processes, allowing malicious activity to execute undetected during the suspension period.
This technique leverages WerFaultSecure.exe running as a Protected Process Light (PPL) with WinTCB protection level to call MiniDumpWriteDump and suspend EDR/AV processes, allowing malicious activity to execute undetected during the suspension period.
Detects tampering of AMSI (Anti-Malware Scan Interface) related registry values via command line tools such as reg.exe or PowerShell.
AMSI provides a generic interface for applications and services to integrate with antimalware products.
Adversaries may disable AMSI to evade detection of malicious scripts and code execution.
AMSI provides a generic interface for applications and services to integrate with antimalware products.
Adversaries may disable AMSI to evade detection of malicious scripts and code execution.
Detects the usage of attrib with the "+s" option to set scripts or executables located in suspicious locations as system files to hide them from users and make them unable to be deleted with simple rights. The rule limits the search to specific extensions and directories to avoid FPs
Threat actors can use an older version of the auditpol binary available inside the NT resource kit to change audit policy configuration to impair detection capability.
This can be carried out by selectively disabling/removing certain audit policies as well as restoring a custom policy owned by the threat actor.
This can be carried out by selectively disabling/removing certain audit policies as well as restoring a custom policy owned by the threat actor.
Detects a suspicious child process of a Microsoft HTML Help (HH.exe)
Detects the use of SharpEvtHook, a tool that tampers with the Windows event logs
Detects the tampering of Hypervisor-protected Code Integrity (HVCI) related registry values via command line tool reg.exe.
HVCI uses virtualization-based security to protect code integrity by ensuring that only trusted code can run in kernel mode.
Adversaries may tamper with HVCI to load malicious or unsigned drivers, which can be used to escalate privileges, maintain persistence, or evade security mechanisms.
HVCI uses virtualization-based security to protect code integrity by ensuring that only trusted code can run in kernel mode.
Adversaries may tamper with HVCI to load malicious or unsigned drivers, which can be used to escalate privileges, maintain persistence, or evade security mechanisms.
Detects the use of the Group Policy Management Editor (GPME) to modify Default Domain or Default Domain Controllers Group Policy Objects (GPOs).
Adversaries may leverage GPME to make stealthy changes in these default GPOs to deploy malicious GPOs configurations across the domain without raising suspicion.
Adversaries may leverage GPME to make stealthy changes in these default GPOs to deploy malicious GPOs configurations across the domain without raising suspicion.
Detects netsh commands that turns off the Windows firewall
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