SigmaHQ Detections
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6,797 detections
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Detects a suspicious CertReq execution downloading a file.
This behavior is often used by attackers to download additional payloads or configuration files.
Certreq is a built-in Windows utility used to request and retrieve certificates from a certification authority (CA). However, it can be abused by threat actors for malicious purposes.
This behavior is often used by attackers to download additional payloads or configuration files.
Certreq is a built-in Windows utility used to request and retrieve certificates from a certification authority (CA). However, it can be abused by threat actors for malicious purposes.
Detects the creation of the 'shai-hulud-workflow.yml' file, which is associated with the Shai Hulud worm. This worm targets the NPM supply chain and is designed to exfiltrate GitHub secrets. The rule specifically looks for the creation of this file within the '.github/workflows/' directory.
Detects potential exploitation of the BearLPE exploit using Task Scheduler ".job" import arbitrary DACL write. This rule specifically looks for the execution of 'schtasks.exe' with command-line arguments indicative of modifying an existing scheduled task's properties, such as changing the user account and password, which could be abused in privilege escalation scenarios.
This rule detects the creation of specific registry keys under 'Software\AppDataLow\Software\Microsoft\' that are known to be associated with Ursnif malware. The rule filters out common legitimate registry paths used by Internet Explorer, RepService, IME, and Edge to reduce false positives.
Detects the creation of a scheduled task using 'schtasks create' in conjunction with 'wscript' and '/e:vbscript', which is a known persistence mechanism used by the ACTINIUM threat group.
This rule detects the loading of specific DLL names known to be used by the SVR-attributed GraphicalProton backdoor. The rule looks for an 'ImageLoaded' event where the DLL name ends with one of the predefined malicious DLL names.
This rule detects specific DLL sideloading activity observed to be used by the Diamond Sleet APT group. It looks for the loading of 'Version.dll' by 'clip.exe' or 'DSROLE.dll' by 'wsmprovhost.exe' when these executables and DLLs are located in the 'ProgramData' directory. This behavior is indicative of an adversary attempting to execute malicious code by tricking legitimate applications into loading their crafted DLLs.
Detects unexpected command shell execution (cmd.exe) from w3wp.exe when tied to CentreStack's portal.config, indicating potential exploitation (e.g., CVE-2025-30406). This behavior is highly indicative of a web shell or similar remote code execution vulnerability being exploited on the CentreStack portal.
Detects a qlogin.exe command attempting to authenticate as the internal `_+_PublicSharingUser_` using a GUID as the password. This could be an indicator of an attacker exploiting CVE-2025-57788 to gain initial access using leaked credentials.
This rule detects failed attempts to elevate privileges (PIM activation) in Azure Active Directory from devices that are not designated as Privileged Access Workstations (PAW) or Secure Access Workstations (SAW). It specifically looks for messages indicating 'Add member to role completed (PIM activation)' in the sign-in logs, combined with conditions that identify non-compliant devices, unapproved IP addresses, unapproved countries, or unapproved device information. The rule is designed to flag suspicious privilege elevation attempts that originate from unauthorized or untrusted environments, which could indicate a compromised account or an attempt to bypass security controls.
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