SigmaHQ Detections
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6,800 detections
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This rule detects potential remote thread injection activities associated with the Bumblebee malware. Specifically, it looks for instances where 'wabmig.exe', 'wab.exe', or 'ImagingDevices.exe' create a remote thread in 'rundll32.exe'. This behavior is indicative of how Bumblebee operates to execute its malicious payload.
This rule detects a specific HTTP GET request pattern associated with potential exploitation of CVE-2023-36884 by the RomCom threat group. The pattern involves a URI containing '/MSHTML_C7/' and a query parameter 'd' followed by an IPv4 address.
Detects potential beaconing activity to known malicious domains associated with the 3CXDesktopApp supply chain compromise. This rule specifically looks for connections through a proxy to a list of hardcoded domains identified as indicators of compromise (IOCs) during the 3CXDesktopApp incident.
This rule detects specific command-line patterns associated with FIN7's reconnaissance and POWERTRASH execution, as reported by WithSecureLabs. It looks for PowerShell commands that include '-noni -nop -exe bypass -f \\' and 'ADMIN$' or '-ex bypass -noprof -nolog -nonint -f' and 'C:\Windows\Temp\'. These patterns indicate attempts to execute PowerShell scripts, potentially for remote access or privilege escalation, often targeting administrative shares or temporary directories.
Detects the execution of processes where the parent process is 'ws_tomcatservice.exe', excluding 'repadmin.exe'. This activity has been observed in campaigns attributed to Mint Sandstorm, specifically leveraging Log4J vulnerabilities.
This rule detects the use of PowerShell to mount Server Message Block (SMB) shares over the QUIC transport protocol. This activity, while legitimate, can be unusual in some enterprise environments and may indicate an adversary attempting to establish lateral movement or data transfer channels using a less common protocol.
Detects PowerShell scripts attempting to access the default Windows Mail App mailbox data. This activity could indicate an adversary trying to manipulate, exfiltrate, or delete stored emails. The detection specifically looks for the string '\Comms\Unistore\data' within PowerShell script blocks, which points to the location where the Windows Mail App stores its data.
Detects command line usage of "findstr.exe" to search for keywords related to "passwords" in various languages. This activity can indicate an adversary attempting to locate credentials stored in files on a compromised system.
Detects potential Spring Expression Language (SpEL) Injection exploitation attempts, which can lead to Remote Code Execution (RCE). The rule specifically looks for the 'org.springframework.expression.ExpressionException' keyword in application error logs, indicating that an attempt to evaluate a malicious expression might have occurred or failed.
Detects the creation, deletion, or update of AWS Glue Development Endpoints. This activity can be indicative of privilege escalation attempts or unauthorized resource manipulation within an AWS environment, as development endpoints provide an interactive environment for data processing.
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