SigmaHQ Detections
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6,800 detections
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Detects the creation of files that resemble exports of the local Security Account Manager (SAM) database. This activity is often associated with credential dumping techniques used by adversaries to obtain local user hashes. The rule specifically looks for common filenames and paths used when dumping the SAM hive, including those related to known exploits like CVE-2021-36934 and tools like ShadowSteal and hivenightmare.
Detects suspicious rejected SMB guest logon attempts from an IP address, which can be an indicator of an attempted PrintNightmare (CVE-2021-1675) remote code execution exploit or other brute-force/password guessing attacks against SMB. The rule specifically looks for EventID 31017 (SMB client security event for rejected guest logon) where the UserName is empty and the ServerName starts with '\1', which is often seen in exploit attempts.
Detects the use of a Proof-of-Concept (PoC) tool designed to exploit the Local Privilege Escalation (LPE) vulnerability CVE-2021-41379. The rule specifically looks for MsiInstaller Event ID 1033 with the data containing 'test pkg', which is indicative of the PoC's activity.
Detects signs of the exploitation of Local Privilege Escalation (LPE) vulnerability CVE-2021-41379. This specific rule identifies the creation of an 'elevation_service.exe' file by 'msiexec.exe' within the Microsoft Edge application directory, which is a known indicator of this exploit.
Detects known hacktool execution based on image name.
Detects execution of network scanning and reconnaisance tools. These tools can be used for the enumeration of local or remote network services for example.
Detects potential command-line obfuscation using Unicode characters. Adversaries may use these characters to evade detection by security tools that do not properly normalize or interpret them, making the command-line arguments difficult to analyze or signature.
Detects the creation of 'Autoit3.exe' by uncommon or suspicious processes such as 'curl.exe', 'KeyScramblerLogon.exe', 'ExtExport.exe', or 'wmprph.exe'. This activity is associated with DarkGate malware, which leverages 'Autoit3.exe' to execute shellcode for process injection and C2 communication. The identified parent processes are considered non-standard for creating this executable.
This rule detects the execution of 'Autoit3.exe' when it is spawned by suspicious parent processes such as 'cmd.exe', 'KeyScramblerLogon.exe', or 'msiexec.exe'. It specifically filters out legitimate executions of 'Autoit3.exe' from standard installation paths to reduce false positives. This activity is indicative of the DarkGate malware infection chain, which leverages AutoIt3.exe to execute shellcode for process injection and command-and-control communication.
Detects the execution of a shell (PowerShell, Bash, WSL) via a Visual Studio Code tunnel. Attackers can abuse this functionality to establish a C2 channel and execute arbitrary commands on the system.
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