Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
503 detections
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This rule detects network traffic containing the 'HCENC1' signature prefix within the payload, which is associated with the RUSTYSHADE malware family. This pattern indicates an encrypted communication channel used for command and control (C2) purposes.
This rule detects network traffic patterns indicative of the Transparent Tribe threat group using the GitHub API for command-and-control (C2) operations. It specifically identifies HTTP requests to GitHub's content API that attempt to access or exchange files named 'command.txt', 'results.txt', 'heartbeat.txt', or 'screenshot.png', which are known indicators of this actor's C2 communication strategy.
This rule detects suspicious outbound HTTP POST requests to a specific domain ('monitorondomainwintgt') containing known API endpoints ('/api/gym-facility', '/api/gym-membership', '/api/coach-instructions') often used by Golang-based Remote Access Trojans (RATs) for command-and-control communication.
Detects network activity (DNS, TLS SNI, and direct TCP connections) associated with the Transparent Tribe threat group's command-and-control infrastructure, specifically targeting the domain 'sharema128.net' and its associated IP address.
Detects network communication patterns associated with the RUSTYSHADE malware family, which leverages the GitHub REST API for command-and-control (C2) operations. The rule monitors for specific SNI indicators, GitHub API URL patterns for command retrieval, task/result file interactions, exfiltration of files (screenshots/webcam photos), and custom encrypted request body markers.
Detects specific command strings ('proxy_open', 'proxy_data', 'proxy_close') associated with the Koktevrat Android RAT's tunneling functionality. The rule monitors outbound TCP traffic to identify the initiation, data transfer, and termination phases of a proxy connection, leveraging Suricata flowbits to track the state of the C2 tunnel.
Detects specific command strings ('proxy_open', 'proxy_data', 'proxy_close') associated with the Koktevrat Android RAT's tunneling functionality. The rule monitors outbound TCP traffic to identify the initiation, data transfer, and termination phases of a proxy connection, leveraging Suricata flowbits to track the state of the C2 tunnel.
Detects specific command strings ('proxy_open', 'proxy_data', 'proxy_close') associated with the Koktevrat Android RAT's tunneling functionality. The rule monitors outbound TCP traffic to identify the initiation, data transfer, and termination phases of a proxy connection, leveraging Suricata flowbits to track the state of the C2 tunnel.
Detects anomalous TLS traffic characterized by an empty Server Name Indication (SNI) field in the TLS handshake, combined with a high frequency of such connections. This behavior is indicative of certain proxy protocols like Xray VLESS with REALITY, which are often used to evade Deep Packet Inspection (DPI) and traffic shaping policies by disguising C2 or tunneling traffic as legitimate-looking TLS connections.
Detects Odyssey Stealer malware communicating with a known C2 infrastructure using TLS and performing data exfiltration via HTTP requests to raw-IP destinations using disguised file names such as analytics.gif, pixel.png, and content.js.
Detects unauthorized exfiltration of sensitive information, such as camera credentials or location data, directed to the Telegram Bot API as part of the 'Operation CameraSwarm' campaign.
Detects network activity associated with the EtherHiding technique, where adversaries leverage the Polygon blockchain to resolve command-and-control (C2) infrastructure and communicate with malicious smart contracts. This rule identifies specific JSON-RPC requests ('eth_call') using SloppyRAT contract selectors and DNS queries for blockchain-related RPC endpoints.
This rule detects network traffic (DNS, TLS, HTTP, and TCP) originating from internal assets to known infrastructure associated with the QTFY proxy botnet/C2 framework. It identifies communication with specific C2 domains, proxy management systems, and associated malicious IP ranges.
Detects a multi-stage sequence of network connections to Microsoft cloud services (login.microsoftonline.com, graph.microsoft.com, and data exfiltration endpoints like sharepoint.com) consistent with Storm-3121/Storm-3032 adversary activity. This rule is designed for IDS/IPS monitoring of traffic patterns indicating authentication, reconnaissance, and potential data exfiltration from Microsoft 365 environments.
Detects outbound HTTP POST beaconing behavior to a known C2 IP address associated with the StealC malware and ClickFix campaign. This rule monitors for established connections to the hardcoded infrastructure used for exfiltrating data or receiving commands.
Detects HTTP POST requests to gapidriver.com/api/rest.php containing stager-specific status messages like 'build started', 'launch error', or 'all builds loaded', indicating NeedleStealer malware command-and-control activity.
Detects Odyssey Stealer malware communicating with a known C2 infrastructure using TLS and performing data exfiltration via HTTP requests to raw-IP destinations using disguised file names such as analytics.gif, pixel.png, and content.js.
Detects network traffic between internal hosts and a known malicious IP address on port 5556, characteristic of Go_RAT (hVNC) command and control communication. This rule monitors for established TCP connections to identify potential C2 beaconing or active remote management sessions by the GapiUpdate campaign.
Detects established raw-TCP C2 communication sessions associated with the GapiUpdate Go-based RAT, identifying both known malicious infrastructure and behavioral anomalies characteristic of long-lived, encrypted C2 persistence.
Detects established raw-TCP C2 communication sessions associated with the GapiUpdate Go-based RAT, identifying both known malicious infrastructure and behavioral anomalies characteristic of long-lived, encrypted C2 persistence.
Detects network handshake patterns associated with the Fast Reverse Proxy (FRP) client, specifically identifying outbound traffic containing identifiers used in common FRP reverse tunnel configurations. This behavior is indicative of unauthorized remote access tools or tunneling software establishing a connection to an external command-and-control server.
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