Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects network communication associated with the SilkParasite campaign, specifically identifying TLS traffic using fraudulent certificates impersonating the Uzbekistan railway authority (azure.uzrailwaystax.com) and connections to identified malicious infrastructure using specific JA4X TLS fingerprinting.
Detects HTTP POST requests to the Telegram Bot API (/sendPhoto) containing patterns indicative of data exfiltration. The rule identifies suspicious message content, such as URLs leading to VK.com or reconnaissance data like Shodan host links and IP location query templates, suggesting the use of Telegram as a Command and Control (C2) channel for exfiltrating sensitive information.
Detects outbound RDP-over-TLS connections using non-standard high-numbered ports (64350, 64330, 65535, 65111, 61256), characteristic of SilkParasite command and control infrastructure. The rules trigger on known C2 IP addresses and general suspicious RDP behavior on these specific ports.
Detects high-frequency TCP connection attempts to port 37777, commonly associated with Dahua surveillance devices. The rule uses a threshold of 200 connection attempts within 60 seconds from a single source, which is characteristic of mass-scanning or brute-force activity.
Detects network communication to known SpiceRAT Command and Control (C2) IP addresses and DNS queries for known SpiceRAT-related domains. The rule identifies potential compromise by flagging outbound traffic or DNS resolutions associated with SpiceRAT infrastructure.
Detects high-frequency login attempts directed at the Dahua Easy4IP SDK port 37777, consistent with automated brute-force toolkits like async_brute.py. The rule monitors for a specific packet sequence indicating authentication attempts within a short timeframe.
Detects network traffic attempting to impersonate the Uzbekistan railway authority via suspicious TLS certificates. The rules identify specific SNI domains, certificate subjects, and issuers associated with the 'SilkParasite' campaign, which uses Chinese state-affiliated certificate authorities to facilitate C2 communications.
Detects RDP-over-TLS/NLA traffic occurring over non-standard high ports, which is often indicative of C2 communication or lateral movement associated with the SilkParasite infrastructure cluster.
Detects outbound network traffic from internal hosts to known IP addresses associated with the SpiceRAT malware command and control infrastructure.
Detects outbound HTTP requests to the Telegram Bot API that indicate the exfiltration of sensitive camera credentials or snapshots. The rules identify specific API endpoints such as '/sendPhoto' and the presence of Markdown-formatted text containing 'Login:', 'Password:', and 'Model:' fields within the request body.
Detects high-frequency TCP SYN scanning activity targeting port 37777, commonly associated with the discovery of vulnerable Dahua DVR and NVR devices.
Detects network traffic attempting to exploit CVE-2021-33044 in Dahua NetKeyboard devices. The rule identifies specifically crafted 'global.login' requests designed to bypass authentication mechanisms.
Detects high-concurrency brute-force attempts against Dahua Easy4IP-enabled devices targeting port 37777, identified by specific binary patterns (opcode 0xA0) in the packet payload. This indicates an automated attempt to compromise device authentication.
Detects outbound TLS-encrypted network traffic directed towards known SilkParasite infrastructure using non-standard high ports commonly associated with RDP-over-TLS (NLA). The rule identifies potential Command and Control (C2) activity by flagging connections to suspicious IP/port combinations typical of this adversary cluster.
Detects network communication associated with the SilkParasite campaign, specifically targeting TLS connections that use spoofed certificates impersonating azure.uzrailwaystax.com or communication with known SpiceRAT command-and-control server IP addresses.
Detects high-frequency, unauthenticated probe requests targeting Dahua P2P relay endpoints (/probe/device/ and /online/p2psrv/). This activity is indicative of automated scanning, enumeration, or potential exploitation attempts related to CVE-2025-31702 against internet-facing or network-connected Dahua hardware.
Detects exploit attempts targeting the authentication bypass vulnerability in Dahua NetKeyboard devices (CVE-2021-33044) by monitoring HTTP requests containing malicious 'global.login' RPC parameters.
Detects network communications between internal hosts and known malicious infrastructure associated with SpiceRAT, including TLS-based command channels and HTTP requests for decoy pages.
Detects network activity associated with the SilkParasite C2 infrastructure (used by SpiceRAT and NodeEdgeRAT malware). The rule monitors for specific impersonated TLS certificates, known malicious IP addresses, and unique JA4X TLS fingerprints associated with these threat actors.
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 an attempt to exploit CVE-2026-24858 in FortiCloud SSO by sending a crafted SAML authentication request that lacks a signature. This vulnerability allows an attacker to bypass authentication by providing an unsigned SAML response.
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