SigmaHQ Detections
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6,797 detections
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Detects the modification of Group Policy Objects (GPO) to add a startup/logon script to users or computer objects. This can be used by adversaries for persistence, privilege escalation, or defense evasion.
Detects the installation of a Windows service by the Sliver C2 framework. This rule specifically looks for Event ID 7045 from the Service Control Manager, indicating a service installation, combined with an ImagePath characteristic of Sliver (an executable in the Windows temporary directory with a 10-character alphanumeric name) or a ServiceName explicitly identifying as 'Sliver' or 'Sliver implant'. This behavior is often observed when Sliver implants use tools like PsExec to establish persistence.
This rule detects attempts to load malicious DLLs into the LSASS process by modifying undocumented registry keys. Specifically, it looks for modifications to 'DirectoryServiceExtPt' or 'LsaDbExtPt' registry keys that are not associated with the legitimate 'ntdsa.dll' or 'lsadb.dll' files, which are typically loaded by 'lsass.exe' on domain controllers. This technique can be used for privilege escalation, persistence, and credential access.
Detects various activities associated with the 'Operation Wocao' campaign, including the use of 'checkadmin.exe', 'netsh' commands to modify firewall rules, PowerShell execution with bypass and encoded commands, scheduled task creation, and attempts to query KeePass configuration files and PuTTY sessions from the registry. These activities indicate potential privilege escalation, persistence, discovery, and defense evasion techniques used by the threat actor.
Detects the execution of GuLoader malware where a rundll32.exe process is spawned by an injected browser process (chrome.exe, firefox.exe, or msedge.exe). This behavior indicates potential malware activity, specifically GuLoader initiating network connections.
Detects suspicious child processes spawned by SAP NetWeaver that could indicate potential exploitation of a vulnerability, such as CVE-2025-31324, allowing arbitrary code execution via webshells. The rule specifically looks for common command-line interpreters and scripting engines being launched from SAP NetWeaver's application directories.
This rule detects when a user's account type is changed from 'Guest' to 'Member' within Azure Active Directory. This change signifies an elevation of privileges for the user, as 'Member' accounts typically have broader access and capabilities compared to 'Guest' accounts. Such a modification could be an indicator of an adversary attempting to gain higher privileges or establish persistence within the cloud environment.
Detects when a Privileged Identity Management (PIM) elevation request is approved or denied within Azure AD. This rule helps monitor critical administrative actions related to privilege escalation. Any approvals or denials outside of expected administrative operations should be investigated as they could indicate unauthorized privilege management or attempts to bypass security controls.
This rule detects successful sign-in attempts to Azure AD from devices that are not registered in Active Directory (non-compliant devices) and where Multi-Factor Authentication (MFA) was not required. The sign-in is also flagged as 'atRisk' by Azure AD. This scenario can indicate an adversary attempting to gain initial access or maintain persistence using compromised credentials from an unregistered device, bypassing stronger authentication controls.
Detects a suspicious local successful logon event where the Logon Package is Kerberos, the remote address is set to localhost, and the target user SID is the built-in local Administrator account. This may indicate an attempt to leverage a Kerberos relay attack variant that can be used to elevate privilege locally from a domain joined limited user to local System privileges.
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