Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects attempts to exfiltrate GCP service account credentials by performing a Server-Side Request Forgery (SSRF) attack targeting the GCP metadata server or local system files. It correlates suspicious outbound request patterns with subsequent response bodies containing standard GCP credential fields, excluding known legitimate authentication traffic to cloud APIs.
Detects anomalous bulk configuration data collection from Cisco vManage via REST API endpoints typically used by UAT-8616. The rule identifies repeated HTTP GET requests to critical configuration, device, and system information endpoints on port 8443, which may indicate an attacker attempting to export SD-WAN configuration data following an exploitation event.
This rule detects network connections to or from known suspicious IP addresses and requests to known suspicious domains. These indicators are often associated with command and control (C2) activity, malware distribution, or other malicious infrastructure.
Detects a suspected exploitation of CVE-2026-35616 on edge/SOHO devices, followed within 5 minutes by the download of an architecture-specific MIPS dropper via curl or wget, a behavior consistent with known threat activity such as the Volt Typhoon/JDY Botnet.
Detects web traffic where the referrer header contains keywords associated with gaming or educational themes (such as 'bioshock', 'game', 'puzzle', 'math', 'quiz') combined with access attempts to sensitive URI paths (like '/code', '/token', '/secret', '/private', '/api-key') resulting in a redirect status (301-308). This behavior pattern is often indicative of automated reconnaissance or exploitation attempts using non-standard or obfuscated referrers to bypass simple security filters.
This rule detects the use of the 'msiexec.exe' utility to fetch and potentially execute an '.msi' installer package directly from a remote source via HTTP. This behavior is a known technique for bypassing application control by abusing a signed system binary to download and install malicious packages.
Detects outbound HTTP POST requests to external networks that match a known Emotet C2 traffic pattern. The rule specifically looks for HTTP POST requests using an 'application/x-www-form-urlencoded' Content-Type and a URI structure consisting of randomized alphanumeric segments (4-20 characters long). This structure is characteristic of Emotet's communication with its command-and-control infrastructure.
Detects the use of the HTTP CONNECT method on non-standard ports (8888, 9999, 4444). The CONNECT method is frequently used by HTTP proxies to establish TCP tunnels; unauthorized use of this method on uncommon ports is a common indicator of protocol tunneling used to bypass network egress filtering or for command and control (C2) communication.
This rule monitors incoming HTTP requests for classic SQL injection patterns, such as UNION SELECT, SLEEP, BENCHMARK, and various SQL commands like DROP or ALTER. These signatures are commonly associated with attempts to gain unauthorized access to database contents, exfiltrate data, or compromise the database integrity via web applications.
Detects incoming HTTP traffic attempting to exploit the Apache Struts2 vulnerability CVE-2017-5638. The rule monitors the Content-Type HTTP header for OGNL (Object-Graph Navigation Language) expressions containing known exploitation markers like ClassLoader, getRuntime, or .exec(), which indicate an attempt to achieve Remote Code Execution (RCE).
Detects common SQL injection attack patterns within HTTP URI or POST body traffic, such as UNION SELECT, tautologies (e.g., OR 1=1), schema enumeration, and database functions like benchmark or sleep.
Detects HTTP beaconing activity indicative of Cobalt Strike Malleable C2 communication. The rule monitors for specific URI patterns ('/updates', '/pixel', '/submit.php') in combination with a default User-Agent string commonly used by Cobalt Strike malleable profiles.
Detects incoming HTTP traffic attempting to exploit the Apache Struts2 vulnerability CVE-2017-5638. The rule monitors the Content-Type HTTP header for OGNL (Object-Graph Navigation Language) expressions containing known exploitation markers like ClassLoader, getRuntime, or .exec(), which indicate an attempt to achieve Remote Code Execution (RCE).
Detects HTTP beaconing activity to a /submit.php URI with a default Cobalt Strike User-Agent string. This is indicative of a default or poorly customized Cobalt Strike malleable C2 profile being used for command and control communication.
Detects attempts to exploit the Shellshock vulnerability (CVE-2014-6271) by inspecting HTTP request headers for the characteristic function definition syntax '() { :;'. This pattern is commonly used in malicious payloads to trigger command execution via environment variables in CGI scripts.
Detects attempts to perform Local File Inclusion (LFI) via path traversal sequences (../) in HTTP URIs, specifically targeting sensitive files like /etc/passwd or windows/win.ini.
Detects Server-Side Request Forgery (SSRF) attempts targeting Microsoft Exchange via the /autodiscover/ endpoint. The attack leverages a specifically crafted X-BEResource header containing an internal IP address, which is indicative of the CVE-2021-26855 vulnerability used in ProxyLogon exploitation.
Detects HTTP POST requests characteristic of QakBot command-and-control check-ins. The rule looks for an 'established' flow to an external network using a POST method, with a request body containing 'qbot' followed by a version string pattern, which is indicative of the malware reporting system info to its C2 server.
This rule detects HTTP POST requests to a MyBB forum administrative panel targeting the 'user-users' module, specifically attempting to assign a user to the 'Administrator' group (group ID 4). This pattern is indicative of an exploitation attempt or unauthorized administrative account manipulation.
Detects attempts to exploit Velocity Template Language (VTL) injection vulnerabilities in the Floci API Gateway, specifically targeting MOCK integration configurations on port 4566. The rule monitors for the injection of malicious Java objects via response templates, deployment of these templates, and the execution of the RCE payload via a specific API endpoint path, including potential IAM enforcement bypass attempts.
Detects incoming HTTP POST requests directed at PHP, ASPX, or JSP files that contain suspicious command execution patterns (such as cmd=, exec=, system(, or eval()). This behavior is highly indicative of an attacker interacting with a web shell to execute unauthorized commands on the server.
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