Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects anomalous behavioral patterns where an AI agent process (e.g., Claude Code, Cursor, Aider) performs multi-category discovery of its own runtime environment, plugins, and host configuration. The rule identifies agents that trigger processes spanning at least three distinct discovery categories (Network, File/Plugin, Software, or System) within a short timeframe, indicating potential reconnaissance of agent-authorized capabilities and tools rather than standard host exploration. Covers T1082, T1518, T1083, T1016
Detects instances where the rnpkeys process (likely used for GPG-related operations) spawns common Windows living-off-the-land binaries such as rundll32, regsvr32, msiexec, cmd, powershell, or wscript. It specifically monitors for patterns indicating potential script execution from temporary folders, the bypass of PowerShell execution policies, or the installation of products via msiexec, which may indicate malicious activity following initial compromise or delivery of a malicious payload.
Detects the presence of an unpacked Sauron Loader DLL by identifying a specific embedded configuration header (magic value 0xbaadf00d followed by flags 0x40) in conjunction with configuration fields like 'group_id' or 'build_id'. This rule is intended for static analysis of file samples.
Detects unauthorized or suspicious persistence attempts where Windows Package Manager (WinGet) configuration processes (ConfigurationRemotingServer.exe or WindowsPackageManagerServer.exe) write to the Windows 'Run' registry keys in HKLM. This behavior can be abused to execute malicious code automatically at system startup.
Detects processes associated with the WinGet/DSC configuration engine (ConfigurationRemotingServer.exe, WindowsPackageManagerServer.exe, or winget.exe) initiating processes with the COR_PROFILER or COR_ENABLE_PROFILING environment variables. This behavior is indicative of leveraging .NET profiler hijacking via the DSC 'Environment' resource for persistence or privilege escalation.
This rule correlates web clicks on Google Sites URLs containing keywords related to GlobalProtect with the subsequent creation or renaming of an unsigned or improperly signed GlobalProtect.msi file on the same endpoint within a 30-minute window. This behavior is indicative of a spearphishing attempt using a masqueraded landing page to deliver malicious or unauthorized software.
This rule correlates web clicks on Google Sites URLs containing keywords related to GlobalProtect with the subsequent creation or renaming of an unsigned or improperly signed GlobalProtect.msi file on the same endpoint within a 30-minute window. This behavior is indicative of a spearphishing attempt using a masqueraded landing page to deliver malicious or unauthorized software.
This rule detects potential persistence mechanisms associated with the GlobalProtect VPN application where the binary is unsigned. It specifically monitors for unauthorized 'RunOnce' registry entries, the creation of suspicious scheduled tasks, or updates to scheduled tasks involving 'GlobalProtect.exe'. These actions are initiated by either 'msiexec.exe' or 'GlobalProtect.exe', suggesting a possible attempt to masquerade malicious activity as a legitimate VPN update or installation process.
This rule detects potential persistence mechanisms associated with the GlobalProtect VPN application where the binary is unsigned. It specifically monitors for unauthorized 'RunOnce' registry entries, the creation of suspicious scheduled tasks, or updates to scheduled tasks involving 'GlobalProtect.exe'. These actions are initiated by either 'msiexec.exe' or 'GlobalProtect.exe', suggesting a possible attempt to masquerade malicious activity as a legitimate VPN update or installation process.
This rule detects potential persistence mechanisms associated with the GlobalProtect VPN application where the binary is unsigned. It specifically monitors for unauthorized 'RunOnce' registry entries, the creation of suspicious scheduled tasks, or updates to scheduled tasks involving 'GlobalProtect.exe'. These actions are initiated by either 'msiexec.exe' or 'GlobalProtect.exe', suggesting a possible attempt to masquerade malicious activity as a legitimate VPN update or installation process.
This rule detects potential persistence mechanisms associated with the GlobalProtect VPN application where the binary is unsigned. It specifically monitors for unauthorized 'RunOnce' registry entries, the creation of suspicious scheduled tasks, or updates to scheduled tasks involving 'GlobalProtect.exe'. These actions are initiated by either 'msiexec.exe' or 'GlobalProtect.exe', suggesting a possible attempt to masquerade malicious activity as a legitimate VPN update or installation process.
Detects a sequence of suspicious activities on a Windows host aimed at inhibiting system recovery, such as deleting shadow copies, modifying boot recovery configurations, deleting backup catalogs, or stopping security and backup-related services. This rule aggregates distinct categories of these actions by DeviceId and Account to identify potential malicious intent characteristic of ransomware or data destructive attacks.
Detects a sequence of suspicious activities on a Windows host aimed at inhibiting system recovery, such as deleting shadow copies, modifying boot recovery configurations, deleting backup catalogs, or stopping security and backup-related services. This rule aggregates distinct categories of these actions by DeviceId and Account to identify potential malicious intent characteristic of ransomware or data destructive attacks.
Detects a sequence of suspicious activities on a Windows host aimed at inhibiting system recovery, such as deleting shadow copies, modifying boot recovery configurations, deleting backup catalogs, or stopping security and backup-related services. This rule aggregates distinct categories of these actions by DeviceId and Account to identify potential malicious intent characteristic of ransomware or data destructive attacks.
This rule detects the creation, modification, or renaming of .lnk shortcut files within the Windows Startup folders (both current user and roaming appdata). It then correlates this activity with the execution of AutoIt3.exe or processes identified as 'AutoIt' that are running scripts with .a3x or .au3 extensions, which are commonly used for persistence and execution of malicious automation scripts.
Detects the loading of specific DLL files (winfsp-x64.dll or DukeQt.dll) where the loading process or the DLL file location originates from outside the legitimate system directory (C:\Windows\). This behavior is often associated with DLL sideloading or search order hijacking where a malicious actor places a DLL in an untrusted directory to be loaded by a legitimate application.
Detects network communication associated with the Rapuncel MaaS (Malware-as-a-Service) campaign, specifically identifying the Command and Control (C2) connection, GitHub Pages-based redirect chains, and subsequent delivery of large, suspicious ZIP archives containing renamed executable/system files.
Detects the execution of known Python scripts (CES_Enroll.py, ntlm_ces_relay.py, ces_negotiate_ntlm.py) often associated with NTLM relay attacks or forced authentication techniques. These scripts leverage Python to interact with authentication protocols or relay requests.
Detects the execution of MicrosoftIME.exe or the creation of scheduled tasks referencing it from non-standard directories such as User, Temp, or AppData folders. This behavior is indicative of masquerading or persistence mechanisms where a malicious process mimics the legitimate Microsoft Input Method Editor (IME) binary.
Detects Xray-core C2 tunnel traffic where the TLS SNI is spoofed to appear as 'dl.google.com'. The detection specifically looks for this behavior originating from non-browser processes such as 'wkspbroker.exe' or 'radcui.dll', which is indicative of malicious tunneling activity.
Detects unauthorized processes (excluding firefox.exe and explorer.exe) accessing or modifying sensitive Firefox browser profile files, specifically places.sqlite (history/bookmarks) and cookies.sqlite (session cookies). This activity is often indicative of credential or session hijacking attempts by malware or malicious scripts.
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