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SigmaHQ Detections

@sigmaHQ
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6,797 detections

Detects code fragments found in small and obfuscated AMSI bypass PowerShell scripts
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
003
Adversaries may abuse container files such as disk image (.iso, .vhd) file formats to deliver malicious payloads that may not be tagged with MOTW.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
003
Detects PowerShell scripts set ACL to of a file or a folder
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
103
Detects PowerShell scripts to set the ACL to a file in the Windows folder
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
003
Detects attempts to remove Windows Defender configuration using the 'MpPreference' cmdlet
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
003
Detects a typical pattern of a CobaltStrike BOF which inject into other processes
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
003
Detects suspicious process access to LSASS.exe from processes located in uncommon locations with dbgcore.dll or dbghelp.dll in the call trace.
These DLLs contain functions like MiniDumpWriteDump that can be abused for credential dumping purposes. While modern tools like Mimikatz have moved to using ntdll.dll,
dbgcore.dll and dbghelp.dll are still used by basic credential dumping utilities and legacy tools for LSASS memory access and process suspension techniques.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
003
Threat actors can use auditpol binary 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.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
003
Detects potential malicious and unauthorized usage of bcdedit.exe
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
003
Detects execution of "certutil" with the "addstore" flag in order to install a new certificate on the system.
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
003
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