Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects HTTP beaconing and WebSocket command-and-control (C2) communication associated with the AgtaBackup RAT. This includes identifying specific check-in URIs, hardcoded 'X-Agent-Secret' header authentication, and the initialization of a WebSocket connection.
Detects network requests to known domains (acrobat-reader-installer.com, 03webzoominvite.us) masquerading as Microsoft Store resources to deliver malicious MSI installers. This activity is associated with RMM-based RAT deployment chains.
This rule detects HTTP GET requests to Vercel subdomains targeting a specific path (/secure.html). This behavior is characteristic of phishing campaigns, specifically those masquerading as RMM-related lures to trick users into providing access codes or credentials.
Detects network traffic (TLS SNI and HTTP Host headers) attempting to connect to known command-and-control infrastructure associated with the NodeRabbit RAT and Mirage Kitten campaign. The rule monitors for unauthorized connectivity to specific domains including 'oracle-challenge.s3.us-east-1.amazonaws.com', 'plugplay.azurewebsites.net', and 'lifespotify.com'.
Detects outbound HTTP POST requests destined for 'aware-cr1.com' targeting the URI '/api/beacon', which is indicative of command-and-control (C2) communication associated with the 2CLoader malware.
Detects outbound HTTP POST requests destined for 'aware-cr1.com' targeting the URI '/api/beacon', which is indicative of command-and-control (C2) communication associated with the 2CLoader malware.
Detects outbound HTTP POST requests destined for 'aware-cr1.com' targeting the URI '/api/beacon', which is indicative of command-and-control (C2) communication associated with the 2CLoader malware.
This rule detects HTTP GET requests to a specific IP address (62.60.226.185) attempting to download a file named 't0907.exe'. This pattern is associated with the delivery phase of the 2CLoader malware.
This rule detects HTTP GET requests to a specific IP address (62.60.226.185) attempting to download a file named 't0907.exe'. This pattern is associated with the delivery phase of the 2CLoader malware.
This rule detects HTTP GET requests to a specific IP address (62.60.226.185) attempting to download a file named 't0907.exe'. This pattern is associated with the delivery phase of the 2CLoader malware.
Detects network activity (DNS queries, TLS SNI, and HTTP Host headers) associated with known RedFlick command-and-control (C2) infrastructure domains: etia.ca, groy.cc, and secure-dns-hub.com.
Detects incoming HTTP requests to a FortiSandbox device that contain suspicious command injection patterns. The rule monitors both the URI and the request body for shell metacharacters such as ';', '|', '`', '$(', or '&&', followed by common binary execution commands (e.g., cat, wget, curl, bash, rm). This behavior is indicative of an exploit attempt targeting CVE-2026-39808.
Detects TLS traffic featuring certificates where both the subject and issuer common name (CN) are set to 'SLIVER', which is the default configuration for the Sliver C2 framework's self-signed certificates.
Detects HTTP GET requests to network appliance management interfaces containing query parameters commonly used to trigger remote command or shell execution (e.g., cmd, exec, shell, command), which is characteristic of web shell activity.
Detects HTTP GET requests to the URI '/dpixel', which is a known default beacon URI pattern associated with the Brute Ratel C4 command and control framework's 'Badger' implant.
Detects anomalous network traffic patterns characteristic of the PetitPotam exploit, specifically targeting the MS-EFSRPC interface on Windows SMB pipes. This behavior is used to force a remote system to initiate authentication to a specified target, facilitating NTLM relay attacks.
Detects NTLM authentication attempts targeting administrative network shares (ADMIN$ or C$) over the SMB protocol. This behavior is a common indicator of lateral movement techniques such as Pass-the-Hash, where an adversary uses captured NTLM hashes to authenticate to remote systems.
Detects the presence of self-signed TLS certificates with the common name 'JDYFJ' in the certificate subject or issuer fields. This pattern has been associated with the KV-Botnet, which has been utilized by the Volt Typhoon threat actor to obfuscate command and control traffic through compromised SOHO routers.
This rule detects malicious HTTP POST requests attempting a path traversal attack against Grav CMS, specifically targeting the __unique_form_id__ parameter. The rule looks for directory traversal sequences ('..') following the parameter, which is characteristic of attempts to read sensitive files outside the intended web directory.
Detects HTTP responses containing a file named 'ClaudeDesktop.exe' served from paths containing '/artifacts/' on the 'claude.ai' host where the request referrer is not 'claude.ai' or 'anthropic.com', suggesting a malvertising or supply chain delivery attempt of a malicious installer.
This rule detects a potential SYN flood denial-of-service attack, characterized by a high volume of TCP SYN packets directed at a target within a short timeframe. Such activity is indicative of attempts to exhaust server resources by leaving TCP handshakes incomplete.
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