Sigma Rules
1,408 rules found
Forfiles Command Execution
Detects the execution of "forfiles" with the "/c" flag. While this is an expected behavior of the tool, it can be abused in order to proxy execution through it with any binary. Can be used to bypass application whitelisting.
Uncommon FileSystem Load Attempt By Format.com
Detects the execution of format.com with an uncommon filesystem selection that could indicate a defense evasion activity in which "format.com" is used to load malicious DLL files or other programs.
Use of FSharp Interpreters
Detects the execution of FSharp Interpreters "FsiAnyCpu.exe" and "FSi.exe" Both can be used for AWL bypass and to execute F# code via scripts or inline.
Fsutil Drive Enumeration
Attackers may leverage fsutil to enumerated connected drives.
Potentially Suspicious NTFS Symlink Behavior Modification
Detects the modification of NTFS symbolic link behavior using fsutil, which could be used to enable remote to local or remote to remote symlinks for potential attacks.
Fsutil Suspicious Invocation
Detects suspicious parameters of fsutil (deleting USN journal, configuring it with small size, etc). Might be used by ransomwares during the attack (seen by NotPetya and others).
Potential Arbitrary Command Execution Via FTP.EXE
Detects execution of "ftp.exe" script with the "-s" or "/s" flag and any child processes ran by "ftp.exe".
Arbitrary File Download Via GfxDownloadWrapper.EXE
Detects execution of GfxDownloadWrapper.exe with a URL as an argument to download file.
Github Self-Hosted Runner Execution
Detects GitHub self-hosted runners executing workflows on local infrastructure that could be abused for persistence and code execution. Shai-Hulud is an npm supply chain worm targeting CI/CD environments. It installs runners on compromised systems to maintain access after credential theft, leveraging their access to secrets and internal networks.
Suspicious Git Clone
Detects execution of "git" in order to clone a remote repository that contain suspicious keywords which might be suspicious
Potentially Suspicious GoogleUpdate Child Process
Detects potentially suspicious child processes of "GoogleUpdate.exe"
File Decryption Using Gpg4win
Detects usage of Gpg4win to decrypt files
File Encryption Using Gpg4win
Detects usage of Gpg4win to encrypt files
Portable Gpg.EXE Execution
Detects the execution of "gpg.exe" from uncommon location. Often used by ransomware and loaders to decrypt/encrypt data.
File Encryption/Decryption Via Gpg4win From Suspicious Locations
Detects usage of Gpg4win to encrypt/decrypt files located in potentially suspicious locations.
Gpresult Display Group Policy Information
Detects cases in which a user uses the built-in Windows utility gpresult to display the Resultant Set of Policy (RSoP) information
Arbitrary Binary Execution Using GUP Utility
Detects execution of the Notepad++ updater (gup) to launch other commands or executables
File Download Using Notepad++ GUP Utility
Detects execution of the Notepad++ updater (gup) from a process other than Notepad++ to download files.
Suspicious GUP Usage
Detects execution of the Notepad++ updater in a suspicious directory, which is often used in DLL side-loading attacks
Suspicious Child Process of Notepad++ Updater - GUP.Exe
Detects suspicious child process creation by the Notepad++ updater process (gup.exe). This could indicate potential exploitation of the updater component to deliver unwanted malware.
HH.EXE Execution
Detects the execution of "hh.exe" to open ".chm" files.
Remote CHM File Download/Execution Via HH.EXE
Detects the usage of "hh.exe" to execute/download remotely hosted ".chm" files.
HTML Help HH.EXE Suspicious Child Process
Detects a suspicious child process of a Microsoft HTML Help (HH.exe)
Suspicious HH.EXE Execution
Detects a suspicious execution of a Microsoft HTML Help (HH.exe)
HackTool - ADCSPwn Execution
Detects command line parameters used by ADCSPwn, a tool to escalate privileges in an active directory network by coercing authenticate from machine accounts and relaying to the certificate service
HackTool - Bloodhound/Sharphound Execution
Detects command line parameters used by Bloodhound and Sharphound hack tools
HackTool - F-Secure C3 Load by Rundll32
F-Secure C3 produces DLLs with a default exported StartNodeRelay function.
HackTool - Certify Execution
Detects Certify a tool for Active Directory certificate abuse based on PE metadata characteristics and common command line arguments.
HackTool - Certipy Execution
Detects Certipy execution, a tool for Active Directory Certificate Services enumeration and abuse based on PE metadata characteristics and common command line arguments.
Operator Bloopers Cobalt Strike Commands
Detects use of Cobalt Strike commands accidentally entered in the CMD shell
Operator Bloopers Cobalt Strike Modules
Detects Cobalt Strike module/commands accidentally entered in CMD shell
CobaltStrike Load by Rundll32
Rundll32 can be use by Cobalt Strike with StartW function to load DLLs from the command line.
Potential CobaltStrike Process Patterns
Detects potential process patterns related to Cobalt Strike beacon activity
HackTool - CoercedPotato Execution
Detects the use of CoercedPotato, a tool for privilege escalation
HackTool - Covenant PowerShell Launcher
Detects suspicious command lines used in Covenant luanchers
HackTool - CrackMapExec Execution
This rule detect common flag combinations used by CrackMapExec in order to detect its use even if the binary has been replaced.
HackTool - CrackMapExec Execution Patterns
Detects various execution patterns of the CrackMapExec pentesting framework
HackTool - CrackMapExec Process Patterns
Detects suspicious process patterns found in logs when CrackMapExec is used
HackTool - CrackMapExec PowerShell Obfuscation
The CrachMapExec pentesting framework implements a PowerShell obfuscation with some static strings detected by this rule.
HackTool - CreateMiniDump Execution
Detects the use of CreateMiniDump hack tool used to dump the LSASS process memory for credential extraction on the attacker's machine
HackTool - DInjector PowerShell Cradle Execution
Detects the use of the Dinject PowerShell cradle based on the specific flags
HackTool - Doppelanger LSASS Dumper Execution
Detects the execution of the Doppelanger hacktool which is used to dump LSASS memory via process cloning while evading common detection methods
HackTool - Dumpert Process Dumper Execution
Detects the use of Dumpert process dumper, which dumps the lsass.exe process memory
HackTool - EDRSilencer Execution
Detects the execution of EDRSilencer, a tool that leverages Windows Filtering Platform (WFP) to block Endpoint Detection and Response (EDR) agents from reporting security events to the server based on PE metadata information.
Hacktool - EDR-Freeze Execution
Detects execution of EDR-Freeze, a tool that exploits the MiniDumpWriteDump function and WerFaultSecure.exe to suspend EDR and Antivirus processes on Windows. EDR-Freeze leverages a race-condition attack to put security processes into a dormant state by suspending WerFaultSecure at the moment it freezes the target process. This technique does not require kernel-level exploits or BYOVD, but instead abuses user-mode functionality to temporarily disable monitoring by EDR or Antimalware solutions.
HackTool - Empire PowerShell Launch Parameters
Detects suspicious powershell command line parameters used in Empire
HackTool - Empire PowerShell UAC Bypass
Detects some Empire PowerShell UAC bypass methods
HackTool - WinRM Access Via Evil-WinRM
Adversaries may use Valid Accounts to log into a computer using the Remote Desktop Protocol (RDP). The adversary may then perform actions as the logged-on user.