Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects network traffic directed at the Telegram Bot API (api.telegram.org) where the request URI indicates a bot action ('/bot' followed by 'sendMessage') and the HTTP request body contains the keyword 'VIEW'. This pattern is commonly associated with C2 beacons using Telegram as an intermediary service to send status or command results from compromised hosts.
Detects DNS queries, TLS SNI headers, and HTTP host headers associated with identified C2 infrastructure for NetSupport Manager malware, specifically domains themed around 'GTA6'. These indicators are used by attackers for command and control communication.
Detects attempts to bypass authentication on Nacos servers, including the use of spoofed Nacos-Server User-Agent headers, suspicious API query patterns missing required access tokens, and the subsequent use of forged JWT tokens signed with default keys.
Detects unauthenticated HTTP POST requests targeting the FortiGate administrative API (/api/v2/), which may indicate exploitation attempts related to CVE-2025-25249. The rule specifically looks for requests lacking authentication headers (Cookie or Authorization).
Detects TLS connections where the certificate subject is 'azure.uzrailwaystax.com' and the issuer is 'TLC DV TLS CA', indicating potential impersonation of the Uzbekistan railway authority infrastructure, likely associated with SilkParasite activity.
Detects HTTP GET requests to a specific URL path containing an image file, which is associated with the delivery of the LausivLoader malware. The rule monitors for external connections to the domain 'yapw.life' requesting a PNG file, a technique often used for steganographic payload delivery.
Detects network traffic associated with SilkParasite SpiceRAT malware, including direct IP connections, DNS queries for known malicious domains, and corresponding TLS SNI or HTTP Host header metadata indicating command-and-control (C2) activity.
Detects high-frequency TCP SYN packet bursts targeting port 37777 (commonly used by Dahua surveillance devices). The detection triggers when more than 50 SYN packets from a single source are observed within a 10-second window, suggesting automated reconnaissance or vulnerability scanning activity.
This rule detects suspicious UDP traffic directed at port 8800 targeting the Dahua P2P cloud relay interface. It specifically monitors for enumeration attempts against device serial numbers, which may be a precursor to unauthorized access or reconnaissance against vulnerable Dahua devices.
Detects HTTP traffic to the Telegram Bot API (/sendPhoto) originating from internal network hosts, which is indicative of potential exfiltration of captured images (e.g., screenshots or webcam captures) to an adversary-controlled Telegram channel.
Detects network traffic (DNS queries, TLS SNI, and HTTP Host headers) targeting the domain 'expresshost.cloud', which is identified as hosting VPS infrastructure commonly used for scanning and malicious activities.
Detects outbound RDP-over-TLS traffic directed toward known SilkParasite C2 IP addresses on specific high-numbered ports, or generic RDP-over-TLS patterns on those same non-standard ports, which suggests tunneling or unauthorized remote access.
Detection rules identifying suspicious communication patterns associated with Dahua P2P Cloud Relay devices, including WSSE authentication attempts and device probing to known cloud relay endpoints. These patterns are consistent with reconnaissance and exploitation activity against IoT devices within the context of Operation CameraSwarm.
Detects HTTP responses containing content that clones the RTX Corporation homepage, often associated with SilkParasite C2 infrastructure. The rule flags matches based on embedded text in the HTTP body combined with specific nginx server header fingerprints.
Detects network activity related to the exploitation of Dahua P2P relay services via easy4ipcloud.com. The rule monitors for unauthorized device probing, serial number enumeration, and illicit relay authentication attempts (e.g., using DHP2P protocols and X-WSSE authentication), which are indicative of attackers attempting to abuse IoT device remote access functionality (CVE-2025-31702).
Detects network activity related to 'ClickFix' social engineering campaigns. The rules monitor for DNS queries, TLS SNI requests, and HTTP requests to the malicious domain 'cdnsuicaches.com' used for hosting malicious scripts, as well as the identification of the 'cookie-captcha-complete' string in HTTP traffic, which is a known indicator of a ClickFix social engineering overlay.
Detects network activity related to Dahua P2P relay services (easy4ipcloud.com) on port 8800. The rules monitor for device lookup queries (/online/p2psrv/), probe requests (/probe/device/), and the presence of WSSE authentication headers, which may indicate interaction with or exploitation attempts by tools targeting P2P-enabled surveillance hardware.
Detects outbound HTTP POST requests to the Telegram Bot API (/sendPhoto) that contain sensitive system information, including host credentials (port, login, password) and Shodan host data. This behavior is indicative of an information-stealing malware attempting to exfiltrate captured credentials via a Telegram bot.
Detects network communication with infrastructure associated with the Transparent Tribe threat group (APT36), including C2 traffic to a known malicious IP and DNS resolution for the sharema128.net domain, which are indicative of CrimsonRAT or Doxc malware activity.
Detects periodic beaconing and C2 communication patterns associated with the RapidRust Golang RAT, attributed to the APT36 (Transparent Tribe) threat group. The rule monitors for specific DNS queries to typosquatted domains, TLS SNI mismatches, and specific HTTP API polling activities commonly used by this malware for C2 tasking.
Detects network traffic patterns indicative of a Netcat-based reverse shell associated with the UAT-11823 (Sandworm) threat group. The rule monitors for characteristic command output such as 'uid=' and 'gid=', shell error strings containing '/bin/sh', and root shell prompts ('root@#') following suspected exploitation of CVE-2026-20079.
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