Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects attempts to exploit Apache Struts vulnerabilities by identifying OGNL (Object-Graph Navigation Language) expressions (starting with %{ or ${) within the Content-Type HTTP header, combined with requests to .action or .do endpoints.
Detects common XSS attack patterns within HTTP URI requests, specifically monitoring for script tags or event handler attributes such as 'onerror' and 'onload' which are used to execute malicious JavaScript in a user's browser.
Detects inbound HTTP requests containing common Cross-Site Scripting (XSS) patterns, such as the <script> HTML tag or the 'javascript:' URI scheme, which are indicative of attempts to execute arbitrary client-side code.
This rule monitors incoming DNS traffic for A record responses containing RFC1918 private IP addresses (10.0.0.0/8, 172.16.0.0/12, or 192.168.0.0/16). This behavior is characteristic of DNS rebinding attacks, where a malicious web service resolves to a victim's internal network address to bypass browser same-origin policies.
Detects POST requests to vLLM multimodal inference endpoints that contain 'video_url' fields pointing to external resources or specific video file extensions (.jp2, .mov, .mp4). This activity is indicative of exploitation attempts related to CVE-2026-22778, where an attacker might try to inject malicious video URLs to trigger vulnerabilities in the vLLM service.
This rule monitors web request URLs and associated messages for common SQL injection characters and sequences, such as quotes and semicolons. It specifically targets requests involving the 'apiuser' account to identify potential attempts to manipulate or exploit backend database queries.
This rule detects potential XML External Entity (XXE) injection attempts by looking for specific XML-related keywords ('<?xml' or 'DOCTYPE') within the URI query string of IIS web server logs. It triggers an alert if three or more such attempts are observed from the same IP address within a one-hour window, indicating a possible automated scanning or attack.
Detects network requests involving a file named 'cors_exploit_poc.html' in either the URL or the Referrer field. This filename is characteristic of proof-of-concept (PoC) code used to test for vulnerabilities in Cross-Origin Resource Sharing (CORS) policies, which could allow unauthorized cross-domain access to sensitive data.
Detects the staging and potential execution of Java deserialization payloads associated with the ysoserial CommonCollections5 (CC5) exploit, which leverages the BadAttributeValueExpException gadget chain.
Detects unauthorized OS command execution initiated via Oracle DBMS_SCHEDULER jobs, often involving UTL_FILE for output retrieval. This behavior is indicative of RCE attempts against database servers.
Detects outbound network connection from a host to a known malicious IP and port associated with the exploitation of the GeoServer WFS vulnerability CVE-2024-36401. This rule identifies the potential post-exploitation callback, such as a curl command, following successful remote code execution.
This rule detects suspicious web traffic patterns associated with potential Cross-Origin Resource Sharing (CORS) exploitation. It monitors for access to files containing 'cors_exploit_poc', HTTP POST requests containing sensitive 'AMAUTHID' cookies, or the presence of 'withCredentials' headers alongside 'Access-Control-Allow-Origin' configurations. These indicators, particularly when combined, suggest unauthorized attempts to bypass browser-based security models to access sensitive session identifiers or data.
Detects the creation of known webshell filenames within web-accessible directories (such as wwwroot or CFIDE) by ColdFusion or IIS worker processes. This behavior is indicative of an adversary re-establishing persistence or re-compromising a web server through unauthorized file drops after initial exploitation.
Detects network requests to Microsoft 365 Copilot Enterprise Search containing suspicious HTML tags or prompt injection keywords in the query parameter, indicating a potential Parameter-to-Prompt (P2P) injection attempt (CVE-2026-42824).
Detects network connections to known ShinyHunters infrastructure, identified by specific IP addresses and DNS queries for 'azurenetfiles.net'. This activity is associated with the exploitation of Oracle PeopleSoft servers via gadget chain exploitation.
Detects multiple failed connection attempts to Azure Database for MySQL, which may indicate a brute force attack. This rule specifically looks for 'Access Denied' errors (error code 1045) or other non-zero error codes during connection attempts within a defined timeframe from the same client IP address.
Detects HTTP requests that include an 'Upgrade' header (specifically for websocket or h2c) in conjunction with a 'Content-Length' header. This combination can be used to perform HTTP Request Smuggling or protocol-specific request queue poisoning attacks, particularly against load balancers or proxy servers like nghttpx.
Detects the execution of known CVE-2026-55200 exploit harness and server binaries, or the creation of the libpwn_rce_proof.txt artifact. These activities indicate active exploitation staging or the successful execution of an out-of-bounds heap write exploit chain against libssh2.
Detects HTTP/1.1 Upgrade requests directed at an nghttpx proxy that contain a non-zero Content-Length header. This combination is the core primitive for the nghttp2-nghttpx-upgrade-queue-poison-poc attack, where the proxy incorrectly forwards request body bytes to the next backend connection user.
This rule detects attempts to exploit MyBB administrative controls. It monitors for two primary patterns: unauthorized privilege escalation where a limited ACP account creates a new Administrator (usergroup=4) user by bypassing access controls, and unauthorized access by limited ACP accounts to restricted administrative modules such as template and plugin management.
Detects potential HTTP Request Smuggling attempts targeting the nghttpx reverse proxy by monitoring for HTTP/1.1 'Upgrade: h2c' requests that include a 'Content-Length' header, or traffic containing known PoC-specific payloads, poisoned paths, or specific nghttp2 version strings that indicate exploitation activity.
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