Sigma Rules
1,607 rules found
Use of VisualUiaVerifyNative.exe
VisualUiaVerifyNative.exe is a Windows SDK that can be used for AWL bypass and is listed in Microsoft's recommended block rules.
Use of VSIISExeLauncher.exe
The "VSIISExeLauncher.exe" binary part of the Visual Studio/VS Code can be used to execute arbitrary binaries
Use of Wfc.exe
The Workflow Command-line Compiler can be used for AWL bypass and is listed in Microsoft's recommended block rules.
Potential Register_App.Vbs LOLScript Abuse
Detects potential abuse of the "register_app.vbs" script that is part of the Windows SDK. The script offers the capability to register new VSS/VDS Provider as a COM+ application. Attackers can use this to install malicious DLLs for persistence and execution.
Potential Credential Dumping Via LSASS Process Clone
Detects a suspicious LSASS process process clone that could be a sign of credential dumping activity
Potential Mftrace.EXE Abuse
Detects child processes of the "Trace log generation tool for Media Foundation Tools" (Mftrace.exe) which can abused to execute arbitrary binaries.
Windows Default Domain GPO Modification via GPME
Detects the use of the Group Policy Management Editor (GPME) to modify Default Domain or Default Domain Controllers Group Policy Objects (GPOs). Adversaries may leverage GPME to make stealthy changes in these default GPOs to deploy malicious GPOs configurations across the domain without raising suspicion.
MMC20 Lateral Movement
Detects MMC20.Application Lateral Movement; specifically looks for the spawning of the parent MMC.exe with a command line of "-Embedding" as a child of svchost.exe
MMC Executing Files with Reversed Extensions Using RTLO Abuse
Detects malicious behavior where the MMC utility (`mmc.exe`) executes files with reversed extensions caused by Right-to-Left Override (RLO) abuse, disguising them as document formats.
MMC Spawning Windows Shell
Detects a Windows command line executable started from MMC
CodePage Modification Via MODE.COM To Russian Language
Detects a CodePage modification using the "mode.com" utility to Russian language. This behavior has been used by threat actors behind Dharma ransomware.
Potential Suspicious Mofcomp Execution
Detects execution of the "mofcomp" utility as a child of a suspicious shell or script running utility or by having a suspicious path in the commandline. The "mofcomp" utility parses a file containing MOF statements and adds the classes and class instances defined in the file to the WMI repository. Attackers abuse this utility to install malicious MOF scripts
Potential Mpclient.DLL Sideloading Via Defender Binaries
Detects potential sideloading of "mpclient.dll" by Windows Defender processes ("MpCmdRun" and "NisSrv") from their non-default directory.
File Download Via Windows Defender MpCmpRun.EXE
Detects the use of Windows Defender MpCmdRun.EXE to download files
Windows Defender Definition Files Removed
Adversaries may disable security tools to avoid possible detection of their tools and activities by removing Windows Defender Definition Files
Suspicious Msbuild Execution By Uncommon Parent Process
Detects suspicious execution of 'Msbuild.exe' by a uncommon parent process
MSDT Execution Via Answer File
Detects execution of "msdt.exe" using an answer file which is simulating the legitimate way of calling msdt via "pcwrun.exe" (For example from the compatibility tab).
Potential Arbitrary Command Execution Using Msdt.EXE
Detects processes leveraging the "ms-msdt" handler or the "msdt.exe" binary to execute arbitrary commands as seen in the follina (CVE-2022-30190) vulnerability
Suspicious Cabinet File Execution Via Msdt.EXE
Detects execution of msdt.exe using the "cab" flag which could indicates suspicious diagcab files with embedded answer files leveraging CVE-2022-30190
Suspicious MSDT Parent Process
Detects msdt.exe executed by a suspicious parent as seen in CVE-2022-30190 / Follina exploitation
Arbitrary File Download Via MSEDGE_PROXY.EXE
Detects usage of "msedge_proxy.exe" to download arbitrary files
Remotely Hosted HTA File Executed Via Mshta.EXE
Detects execution of the "mshta" utility with an argument containing the "http" keyword, which could indicate that an attacker is executing a remotely hosted malicious hta file
Wscript Shell Run In CommandLine
Detects the presence of the keywords "Wscript", "Shell" and "Run" in the command, which could indicate a suspicious activity
Suspicious JavaScript Execution Via Mshta.EXE
Detects execution of javascript code using "mshta.exe".
Potential LethalHTA Technique Execution
Detects potential LethalHTA technique where the "mshta.exe" is spawned by an "svchost.exe" process
Suspicious MSHTA Child Process
Detects a suspicious process spawning from an "mshta.exe" process, which could be indicative of a malicious HTA script execution
MSHTA Execution with Suspicious File Extensions
Detects execution of mshta.exe with file types that looks like they do not typically represent HTA (HTML Application) content, such as .png, .jpg, .zip, .pdf, and others, which are often polyglots. MSHTA is a legitimate Windows utility for executing HTML Applications containing VBScript or JScript. Threat actors often abuse this lolbin utility to download and execute malicious scripts disguised as benign files or hosted under misleading extensions to evade detection.
Suspicious Mshta.EXE Execution Patterns
Detects suspicious mshta process execution patterns
DllUnregisterServer Function Call Via Msiexec.EXE
Detects MsiExec loading a DLL and calling its DllUnregisterServer function
Suspicious MsiExec Embedding Parent
Adversaries may abuse msiexec.exe to proxy the execution of malicious payloads
Suspicious Msiexec Execute Arbitrary DLL
Adversaries may abuse msiexec.exe to proxy execution of malicious payloads. Msiexec.exe is the command-line utility for the Windows Installer and is thus commonly associated with executing installation packages (.msi)
Msiexec Quiet Installation
Adversaries may abuse msiexec.exe to proxy execution of malicious payloads. Msiexec.exe is the command-line utility for the Windows Installer and is thus commonly associated with executing installation packages (.msi)
Suspicious Msiexec Quiet Install From Remote Location
Detects usage of Msiexec.exe to install packages hosted remotely quietly
Potential MsiExec Masquerading
Detects the execution of msiexec.exe from an uncommon directory
MsiExec Web Install
Detects suspicious msiexec process starts with web addresses as parameter
Windows MSIX Package Support Framework AI_STUBS Execution
Detects execution of Advanced Installer MSIX Package Support Framework (PSF) components, specifically AI_STUBS executables with original filename 'popupwrapper.exe'. This activity may indicate malicious MSIX packages build with Advanced Installer leveraging the Package Support Framework to bypass application control restrictions.
Arbitrary File Download Via MSOHTMED.EXE
Detects usage of "MSOHTMED" to download arbitrary files
Arbitrary File Download Via MSPUB.EXE
Detects usage of "MSPUB" (Microsoft Publisher) to download arbitrary files
Potential Process Injection Via Msra.EXE
Detects potential process injection via Microsoft Remote Asssistance (Msra.exe) by looking at suspicious child processes spawned from the aforementioned process. It has been a target used by many threat actors and used for discovery and persistence tactics
Detection of PowerShell Execution via Sqlps.exe
This rule detects execution of a PowerShell code through the sqlps.exe utility, which is included in the standard set of utilities supplied with the MSSQL Server. Script blocks are not logged in this case, so this utility helps to bypass protection mechanisms based on the analysis of these logs.
SQL Client Tools PowerShell Session Detection
This rule detects execution of a PowerShell code through the sqltoolsps.exe utility, which is included in the standard set of utilities supplied with the Microsoft SQL Server Management studio. Script blocks are not logged in this case, so this utility helps to bypass protection mechanisms based on the analysis of these logs.
Suspicious Child Process Of SQL Server
Detects suspicious child processes of the SQLServer process. This could indicate potential RCE or SQL Injection.
Suspicious Child Process Of Veeam Dabatase
Detects suspicious child processes of the Veeam service process. This could indicate potential RCE or SQL Injection.
Potential MSTSC Shadowing Activity
Detects RDP session hijacking by using MSTSC shadowing
New Remote Desktop Connection Initiated Via Mstsc.EXE
Detects the usage of "mstsc.exe" with the "/v" flag to initiate a connection to a remote server. 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.
Mstsc.EXE Execution With Local RDP File
Detects potential RDP connection via Mstsc using a local ".rdp" file
Suspicious Mstsc.EXE Execution With Local RDP File
Detects potential RDP connection via Mstsc using a local ".rdp" file located in suspicious locations.
Mstsc.EXE Execution From Uncommon Parent
Detects potential RDP connection via Mstsc using a local ".rdp" file located in suspicious locations.