SigmaHQ Detections
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6,797 detections
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This rule detects attempts to exploit CVE-2019-3398, a path traversal vulnerability in Confluence. The detection logic specifically looks for HTTP POST requests to '/upload.action' containing the path traversal sequence 'filename=../../../../'. This pattern indicates an attempt to upload a file to an arbitrary location on the server, which is characteristic of the CVE-2019-3398 exploitation.
Detects the exploitation of Zoho ManageEngine Desktop Central Java Deserialization vulnerability (CVE-2020-10189) by monitoring for suspicious child processes spawned by the Java executable associated with Desktop Central. This exploitation often leads to the execution of command-line utilities for further compromise.
This rule detects potential Emotet malware activity by monitoring the creation of `rundll32.exe` processes. Specifically, it looks for `rundll32.exe` command lines that end with `,RunDLL` or `,Control_RunDLL`, which are common patterns used by Emotet for DLL loading. The rule includes filters to reduce false positives from legitimate DLL executions and specific development environment scenarios.
This rule detects DNS queries to specific malicious domains associated with the GALLIUM threat group, as identified by Microsoft Threat Intelligence Center in December 2019. The rule specifically looks for Event ID 257 in the Microsoft-Windows-DNS-Server/Analytical log, where the queried domain name (QNAME) matches a predefined list of indicators.
This rule detects potential successful exploitation of CVE-2021-26857, a Microsoft Exchange Server vulnerability. It specifically looks for abnormal child processes spawning from the 'UMWorkerProcess.exe' (Unified Messaging service) on Exchange servers. The rule filters out legitimate Windows Error Reporting processes ('wermgr.exe' and 'WerFault.exe') to reduce false positives, indicating that any other process spawned by 'UMWorkerProcess.exe' is considered suspicious and a potential indicator of compromise.
Detects file creation patterns indicative of the CVE-2021-40444 exploit, specifically the creation of CAB and INF files by Microsoft Word in temporary internet cache or local temporary directories.
Detects a command used by the Conti ransomware group to list volume shadow copies and redirect the output to a log file. This activity is often a precursor to deleting shadow copies to prevent system recovery.
Detects potential C2 communication related to Devil Bait malware by identifying specific URI patterns in GET requests. The rule looks for URIs containing '/cross.php?op=', '&dt=', and '&uid=' which are indicative of Devil Bait's communication with its command and control server.
Detects Microsoft Outlook attempting to initiate a connection to a WebDAV or SMB share by querying specific registry keys. This behavior is indicative of an exploitation attempt related to CVE-2023-23397, where an attacker could force Outlook to connect to a malicious share and leak NTLM hashes.
Detects a potential exploitation attempt of CVE-2023-25717, a Remote Code Execution vulnerability via an unauthenticated HTTP GET Request, in Ruckus Wireless Admin. The rule looks for specific URI query parameters including '/forms/doLogin', 'login_username', 'password', and the presence of '$(' or its URL-encoded version '%24%28', which are indicative of command injection.
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