SigmaHQ Detections
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6,797 detections
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Detects a specific process tree pattern associated with Trickbot malware, where 'rundll32.exe' acts as the parent process for 'wermgr.exe', and the parent command line contains 'DllRegisterServer'. This pattern indicates the execution of a DLL via rundll32.exe, which then launches wermgr.exe, a known behavior of Trickbot.
Detects the exploitation of the VMware vSphere Remote Code Execution vulnerability (CVE-2021-21972) by identifying HTTP POST requests to the '/ui/vropspluginui/rest/services/uploadova' endpoint. This specific URI indicates an attempt to upload a malicious OVA file, which is the vector for the RCE.
Detects the creation of specific files associated with the Small Sieve malware. This includes files with a characteristic typo ('Microsift' instead of 'Microsoft') in their path or a specific filename ('MicrosoftWindowsOutlookDataPlus.txt') in the AppData\Local directory, which are indicators of the Small Sieve malware's activity.
Detects a specific image load pattern where 'svchost.exe' loads 'clfsw32.dll'. This pattern has been observed in the context of a tool named PRIVATELOG, which is associated with advanced persistent threat (APT) activities, and is considered rare under legitimate circumstances. This behavior could indicate process injection or other forms of defense evasion.
This rule detects potential exploitation of CVE-2023-21554, dubbed 'QueueJumper'. The vulnerability allows for unauthorized remote code execution within the MSMQ service. The rule specifically looks for the 'mqsvc.exe' process (Microsoft Message Queuing service) spawning common Windows command-line interpreters or scripting engines, which would indicate an attempt to execute arbitrary code.
Detects attempts to exploit the Atlassian Bitbucket Command Injection vulnerability (CVE-2022-36804) via the archive API. The rule specifically looks for requests to the '/rest/api/latest/projects/' endpoint containing 'prefix=' and the command injection payload '%00--exec' in the URI query.
Detects potential exploitation attempts of CVE-2023-2283, an authentication bypass vulnerability in libSSH. The exploitation method causes an error message indicating that keys for curve25519 could not be generated. This error message serves as a sign of an exploitation attempt, not necessarily a successful exploitation.
Detects a unique URL marker '/MSHTML_C7/' used in GET requests, which has been associated with RomCom exploitation attempts, potentially leveraging CVE-2023-36884. This marker is indicative of command and control communication or initial access related to the exploit.
Detects the creation of a specific file named 'Comadmin.dat' in the 'C:\Windows\System32\Com\' directory, which is identified as a kernel driver file indicator for the SNAKE malware. This rule aims to identify the presence of this known malicious file.
This rule detects the execution of specific binaries identified as being used by the UNC4841 threat group to deploy the SEASPY backdoor. The binaries include 'BarracudaMailService', 'resize2fstab', and 'resize_reisertab'. Detection is based on the image path ending with any of these specific names.
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