Sigma Rules
1,619 rules found
Renamed Microsoft Teams Execution
Detects the execution of a renamed Microsoft Teams binary.
Renamed NetSupport RAT Execution
Detects the execution of a renamed "client32.exe" (NetSupport RAT) via Imphash, Product and OriginalFileName strings
Renamed NirCmd.EXE Execution
Detects the execution of a renamed "NirCmd.exe" binary based on the PE metadata fields.
Renamed Office Binary Execution
Detects the execution of a renamed office binary
Renamed PAExec Execution
Detects execution of renamed version of PAExec. Often used by attackers
Renamed PingCastle Binary Execution
Detects the execution of a renamed "PingCastle" binary based on the PE metadata fields.
Renamed Plink Execution
Detects the execution of a renamed version of the Plink binary
Visual Studio NodejsTools PressAnyKey Renamed Execution
Detects renamed execution of "Microsoft.NodejsTools.PressAnyKey.exe", which can be abused as a LOLBIN to execute arbitrary binaries
Potential Renamed Rundll32 Execution
Detects when 'DllRegisterServer' is called in the commandline and the image is not rundll32. This could mean that the 'rundll32' utility has been renamed in order to avoid detection
Renamed Remote Utilities RAT (RURAT) Execution
Detects execution of renamed Remote Utilities (RURAT) via Product PE header field
Renamed Schtasks Execution
Detects the execution of renamed schtasks.exe binary, which is a legitimate Windows utility used for scheduling tasks. One of the very common persistence techniques is schedule malicious tasks using schtasks.exe. Since, it is heavily abused, it is also heavily monitored by security products. To evade detection, threat actors may rename the schtasks.exe binary to schedule their malicious tasks.
Renamed SysInternals DebugView Execution
Detects suspicious renamed SysInternals DebugView execution
Renamed ProcDump Execution
Detects the execution of a renamed ProcDump executable. This often done by attackers or malware in order to evade defensive mechanisms.
Renamed PsExec Service Execution
Detects suspicious launch of a renamed version of the PSEXESVC service with, which is not often used by legitimate administrators
Renamed Sysinternals Sdelete Execution
Detects the use of a renamed SysInternals Sdelete, which is something an administrator shouldn't do (the renaming)
Renamed Vmnat.exe Execution
Detects renamed vmnat.exe or portable version that can be used for DLL side-loading
Renamed Whoami Execution
Detects the execution of whoami that has been renamed to a different name to avoid detection
Capture Credentials with Rpcping.exe
Detects using Rpcping.exe to send a RPC test connection to the target server (-s) and force the NTLM hash to be sent in the process.
Ruby Inline Command Execution
Detects execution of ruby using the "-e" flag. This is could be used as a way to launch a reverse shell or execute live ruby code.
Potential Rundll32 Execution With DLL Stored In ADS
Detects execution of rundll32 where the DLL being called is stored in an Alternate Data Stream (ADS).
Suspicious Advpack Call Via Rundll32.EXE
Detects execution of "rundll32" calling "advpack.dll" with potential obfuscated ordinal calls in order to leverage the "RegisterOCX" function
Suspicious Rundll32 Invoking Inline VBScript
Detects suspicious process related to rundll32 based on command line that invokes inline VBScript as seen being used by UNC2452
Rundll32 InstallScreenSaver Execution
An attacker may execute an application as a SCR File using rundll32.exe desk.cpl,InstallScreenSaver
Suspicious Key Manager Access
Detects the invocation of the Stored User Names and Passwords dialogue (Key Manager)
Mshtml.DLL RunHTMLApplication Suspicious Usage
Detects execution of commands that leverage the "mshtml.dll" RunHTMLApplication export to run arbitrary code via different protocol handlers (vbscript, javascript, file, http...)
Rundll32 Execution Without CommandLine Parameters
Detects suspicious start of rundll32.exe without any parameters as found in CobaltStrike beacon activity
Suspicious NTLM Authentication on the Printer Spooler Service
Detects a privilege elevation attempt by coercing NTLM authentication on the Printer Spooler service
Potential Obfuscated Ordinal Call Via Rundll32
Detects execution of "rundll32" with potential obfuscated ordinal calls
Rundll32 Spawned Via Explorer.EXE
Detects execution of "rundll32.exe" with a parent process of Explorer.exe. This has been observed by variants of Raspberry Robin, as first reported by Red Canary.
Process Memory Dump Via Comsvcs.DLL
Detects a process memory dump via "comsvcs.dll" using rundll32, covering multiple different techniques (ordinal, minidump function, etc.)
Rundll32 Registered COM Objects
load malicious registered COM objects
Suspicious Process Start Locations
Detects suspicious process run from unusual locations
Suspicious Rundll32 Setupapi.dll Activity
setupapi.dll library provide InstallHinfSection function for processing INF files. INF file may contain instructions allowing to create values in the registry, modify files and install drivers. This technique could be used to obtain persistence via modifying one of Run or RunOnce registry keys, run process or use other DLLs chain calls (see references) InstallHinfSection function in setupapi.dll calls runonce.exe executable regardless of actual content of INF file.
Shell32 DLL Execution in Suspicious Directory
Detects shell32.dll executing a DLL in a suspicious directory
Potential ShellDispatch.DLL Functionality Abuse
Detects potential "ShellDispatch.dll" functionality abuse to execute arbitrary binaries via "ShellExecute"
RunDLL32 Spawning Explorer
Detects RunDLL32.exe spawning explorer.exe as child, which is very uncommon, often observes Gamarue spawning the explorer.exe process in an unusual way
Potentially Suspicious Rundll32 Activity
Detects suspicious execution of rundll32, with specific calls to some DLLs with known LOLBIN functionalities
Suspicious Control Panel DLL Load
Detects suspicious Rundll32 execution from control.exe as used by Equation Group and Exploit Kits
Suspicious Rundll32 Execution With Image Extension
Detects the execution of Rundll32.exe with DLL files masquerading as image files
Suspicious Usage Of ShellExec_RunDLL
Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin attack
Suspicious ShellExec_RunDLL Call Via Ordinal
Detects suspicious call to the "ShellExec_RunDLL" exported function of SHELL32.DLL through the ordinal number to launch other commands. Adversary might only use the ordinal number in order to bypass existing detection that alert on usage of ShellExec_RunDLL on CommandLine.
ShimCache Flush
Detects actions that clear the local ShimCache and remove forensic evidence
Suspicious Rundll32 Activity Invoking Sys File
Detects suspicious process related to rundll32 based on command line that includes a *.sys file as seen being used by UNC2452
Potentially Suspicious Rundll32.EXE Execution of UDL File
Detects the execution of rundll32.exe with the oledb32.dll library to open a UDL file. Threat actors can abuse this technique as a phishing vector to capture authentication credentials or other sensitive data.
Rundll32 Execution With Uncommon DLL Extension
Detects the execution of rundll32 with a command line that doesn't contain a common extension
Rundll32 UNC Path Execution
Detects rundll32 execution where the DLL is located on a remote location (share)
Suspicious Workstation Locking via Rundll32
Detects a suspicious call to the user32.dll function that locks the user workstation
WebDav Client Execution Via Rundll32.EXE
Detects "svchost.exe" spawning "rundll32.exe" with command arguments like "C:\windows\system32\davclnt.dll,DavSetCookie". This could be an indicator of exfiltration or use of WebDav to launch code (hosted on a WebDav server).