Sigma Rules
3,132 rules found for "sigma"
Abusing Print Executable
Attackers can use print.exe for remote file copy
File Download Using ProtocolHandler.exe
Detects usage of "ProtocolHandler" to download files. Downloaded files will be located in the cache folder (for example - %LOCALAPPDATA%\Microsoft\Windows\INetCache\IE)
Potential Provlaunch.EXE Binary Proxy Execution Abuse
Detects child processes of "provlaunch.exe" which might indicate potential abuse to proxy execution.
Suspicious Provlaunch.EXE Child Process
Detects suspicious child processes of "provlaunch.exe" which might indicate potential abuse to proxy execution.
Screen Capture Activity Via Psr.EXE
Detects execution of Windows Problem Steps Recorder (psr.exe), a utility used to record the user screen and clicks.
PUA - 3Proxy Execution
Detects the use of 3proxy, a tiny free proxy server
PUA - Suspicious ActiveDirectory Enumeration Via AdFind.EXE
Detects active directory enumeration activity using known AdFind CLI flags
PUA - AdFind.EXE Execution
Detects execution of Adfind.exe utility, which can be used for reconnaissance in an Active Directory environment
PUA - AdFind Suspicious Execution
Detects AdFind execution with common flags seen used during attacks
PUA - AdvancedRun Execution
Detects the execution of AdvancedRun utility
PUA - AdvancedRun Suspicious Execution
Detects the execution of AdvancedRun utility in the context of the TrustedInstaller, SYSTEM, Local Service or Network Service accounts
PUA - Advanced IP Scanner Execution
Detects the use of Advanced IP Scanner. Seems to be a popular tool for ransomware groups.
PUA - Advanced Port Scanner Execution
Detects the use of Advanced Port Scanner.
PUA - Chisel Tunneling Tool Execution
Detects usage of the Chisel tunneling tool via the commandline arguments
PUA - CleanWipe Execution
Detects the use of CleanWipe a tool usually used to delete Symantec antivirus.
PUA - Crassus Execution
Detects Crassus, a Windows privilege escalation discovery tool, based on PE metadata characteristics.
PUA - CsExec Execution
Detects the use of the lesser known remote execution tool named CsExec a PsExec alternative
PUA - DefenderCheck Execution
Detects the use of DefenderCheck, a tool to evaluate the signatures used in Microsoft Defender. It can be used to figure out the strings / byte chains used in Microsoft Defender to detect a tool and thus used for AV evasion.
PUA - DIT Snapshot Viewer
Detects the use of Ditsnap tool, an inspection tool for Active Directory database, ntds.dit.
PUA - Fast Reverse Proxy (FRP) Execution
Detects the use of Fast Reverse Proxy. frp is a fast reverse proxy to help you expose a local server behind a NAT or firewall to the Internet.
PUA- IOX Tunneling Tool Execution
Detects the use of IOX - a tool for port forwarding and intranet proxy purposes
PUA - Kernel Driver Utility (KDU) Execution
Detects execution of the Kernel Driver Utility (KDU) tool. KDU can be used to bypass driver signature enforcement and load unsigned or malicious drivers into the Windows kernel. Potentially allowing for privilege escalation, persistence, or evasion of security controls.
PUA - Memory Dump Mount Via MemProcFS
Detects execution of MemProcFS a memory forensics tool with the '-device' parameter. MemProcFS mounts physical memory as a virtual file system, allowing direct access to process memory and system structures. Threat actors were seen abusing this utility to mount memory dumps and then extract sensitive information from processes like LSASS or extract registry hives to obtain credentials, LSA secrets, SAM data, and cached domain credentials. MemProcFS usage that is not part of authorized forensic analysis should be treated as suspicious and warrants further investigation.
PUA - Mouse Lock Execution
In Kaspersky's 2020 Incident Response Analyst Report they listed legitimate tool "Mouse Lock" as being used for both credential access and collection in security incidents.
PUA - Netcat Suspicious Execution
Detects execution of Netcat. Adversaries may use a non-application layer protocol for communication between host and C2 server or among infected hosts within a network
PUA - SoftPerfect Netscan Execution
Detects usage of SoftPerfect's "netscan.exe". An application for scanning networks. It is actively used in-the-wild by threat actors to inspect and understand the network architecture of a victim.
PUA - Ngrok Execution
Detects the use of Ngrok, a utility used for port forwarding and tunneling, often used by threat actors to make local protected services publicly available. Involved domains are bin.equinox.io for download and *.ngrok.io for connections.
PUA - Nimgrab Execution
Detects the usage of nimgrab, a tool bundled with the Nim programming framework and used for downloading files.
PUA - NimScan Execution
Detects usage of NimScan, a portscanner utility. In early 2025, adversaries were observed using this utility to scan for open ports on remote hosts in a compromised environment. This rule identifies the execution of NimScan based on the process image name and specific hash values associated with different versions of the tool.
PUA - NirCmd Execution
Detects the use of NirCmd tool for command execution, which could be the result of legitimate administrative activity
PUA - NirCmd Execution As LOCAL SYSTEM
Detects the use of NirCmd tool for command execution as SYSTEM user
PUA - Nmap/Zenmap Execution
Detects usage of namp/zenmap. Adversaries may attempt to get a listing of services running on remote hosts, including those that may be vulnerable to remote software exploitation
PUA - NPS Tunneling Tool Execution
Detects the use of NPS, a port forwarding and intranet penetration proxy server
PUA - NSudo Execution
Detects the use of NSudo tool for command execution
PUA - PingCastle Execution
Detects the execution of PingCastle, a tool designed to quickly assess the Active Directory security level.
PUA - PingCastle Execution From Potentially Suspicious Parent
Detects the execution of PingCastle, a tool designed to quickly assess the Active Directory security level via a script located in a potentially suspicious or uncommon location.
PUA - Process Hacker Execution
Detects the execution of Process Hacker based on binary metadata information (Image, Hash, Imphash, etc). Process Hacker is a tool to view and manipulate processes, kernel options and other low level options. Threat actors abused older vulnerable versions to manipulate system processes.
PUA - Radmin Viewer Utility Execution
Detects the execution of Radmin which can be abused by an adversary to remotely control Windows machines
PUA - Potential PE Metadata Tamper Using Rcedit
Detects the use of rcedit to potentially alter executable PE metadata properties, which could conceal efforts to rename system utilities for defense evasion.
PUA - Rclone Execution
Detects execution of RClone utility for exfiltration as used by various ransomwares strains like REvil, Conti, FiveHands, etc
PUA - Restic Backup Tool Execution
Detects the execution of the Restic backup tool, which can be used for data exfiltration. Threat actors may leverage Restic to back up and exfiltrate sensitive data to remote storage locations, including cloud services. If not legitimately used in the enterprise environment, its presence may indicate malicious activity.
PUA - RunXCmd Execution
Detects the use of the RunXCmd tool to execute commands with System or TrustedInstaller accounts
PUA - Seatbelt Execution
Detects the execution of the PUA/Recon tool Seatbelt via PE information of command line parameters
PUA - System Informer Execution
Detects the execution of System Informer, a task manager tool to view and manipulate processes, kernel options and other low level operations
PUA - TruffleHog Execution
Detects execution of TruffleHog, a tool used to search for secrets in different platforms like Git, Jira, Slack, SharePoint, etc. that could be used maliciously. While it is a legitimate tool, intended for use in CI pipelines and security assessments, It was observed in the Shai-Hulud malware campaign targeting npm packages to steal sensitive information.
PUA - WebBrowserPassView Execution
Detects the execution of WebBrowserPassView.exe. A password recovery tool that reveals the passwords stored by the following Web browsers, Internet Explorer (Version 4.0 - 11.0), Mozilla Firefox (All Versions), Google Chrome, Safari, and Opera
PUA - Wsudo Suspicious Execution
Detects usage of wsudo (Windows Sudo Utility). Which is a tool that let the user execute programs with different permissions (System, Trusted Installer, Administrator...etc)
PUA - Adidnsdump Execution
This tool enables enumeration and exporting of all DNS records in the zone for recon purposes of internal networks Python 3 and python.exe must be installed, Usee to Query/modify DNS records for Active Directory integrated DNS via LDAP