Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects inbound HTTP requests targeting Microsoft Exchange Server that contain the specific headers and patterns associated with the ProxyLogon (CVE-2021-26855) Server-Side Request Forgery (SSRF) vulnerability. It specifically monitors for the presence of the 'X-BEResource' header and malformed request structures used by attackers to bypass authentication.
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.
This rule detects potential automated reconnaissance activity characteristic of the 'Strix' tool against web applications. It uses two detection mechanisms: tracking high-frequency requests that match typical scanning path patterns (excluding OPTIONS requests) and monitoring for a surge in 404 or 400 error responses, which often indicates an automated vulnerability scanner attempting to probe non-existent resources.
This rule detects SQL injection attempts targeting the BuddyBoss members REST endpoint, specifically identifying exploitation patterns associated with the 'sqlmap' tool. The rule monitors for specific URL parameters including 'member_type', 'search_terms', and 'scope' in combination with an 'sqlmap' user-agent, indicating an automated exploitation attempt against the application.
Detects HTTP POST requests to a specific API endpoint (/api/adbk/upload) containing references to 'cert.pem' and 'private.key', indicating the exfiltration of sensitive cryptographic material by the RatHat malware.
This rule detects network communication patterns indicative of the Kimsuky threat group using compromised WordPress sites hosted on wasmer.app for command and control (C2). It specifically looks for established HTTP requests to the .wasmer.app domain, targeting a specific WordPress uploads path and a unique token format in the URI string.
Detects anomalous data exfiltration activity to Dropbox API, specifically utilizing a naming convention in the file path ('_lns/') often associated with Kimsuky threat actor tools. The rule monitors HTTP POST requests to content.dropboxapi.com with characteristic 'Dropbox-API-Arg' header values and TLS SNI indicators.
Detects network traffic associated with Hannibal Stealer, including communication with known hardcoded C2 infrastructure, suspicious URI patterns for data exfiltration, and the use of the Telegram Bot API for potential C2 or exfiltration.
Detection rules designed to identify communication patterns associated with the CRPx0 ransomware, specifically targeting HTTP-based command-and-control (C2) traffic, including relay server interaction, unique Authorization headers, and connections to known onion-based proxies.
This rule monitors for network traffic related to known fake GitHub pages and malicious loader sites impersonating LastPass Authenticator. It detects attempts to access specific malicious domains and organization pages on GitHub, as well as the delivery of malicious pages containing spoofed trust badges and branding, commonly used in phishing campaigns.
Detects HTTP GET requests associated with the Kimsuky threat actor, specifically targeting the retrieval of payloads like uni.txt or files matching the test.bef_fri pattern from the /unicorn/ directory.
Detects outbound HTTP requests to known Kimsuky command and control (C2) infrastructure associated with the Stella_Gary campaign. The rule monitors for specific URI patterns ('/unicorn/mort.php' or '/unicorn/uni.txt') commonly used by this threat actor for beaconing.
Detects high-volume POST requests containing HEIF, HEIC, or AVIF image content types, indicative of automated fuzzing or exploitation attempts against an image-processing endpoint targeting CVE-2026-32882.
Detects high-volume POST requests containing HEIF, HEIC, or AVIF image content types, indicative of automated fuzzing or exploitation attempts against an image-processing endpoint targeting CVE-2026-32882.
Detects high-volume POST requests containing HEIF, HEIC, or AVIF image content types, indicative of automated fuzzing or exploitation attempts against an image-processing endpoint targeting CVE-2026-32882.
Detects network activity associated with the SilverFox multi-tier relay infrastructure, specifically identifying HTTP requests to known relay domains and dispatcher endpoints used for command-and-control (C2) communication.
This rule detects suspicious outbound HTTP GET requests to a known domain (noah-ssh.com.cn) targeted by the SilverFox malware relay dispatcher. It specifically monitors for requests to '/api.php' containing a 13-digit numeric timestamp parameter, which is a characteristic pattern of its C2 communication.
Detects communication between a host and a suspected malicious domain (noah-ssh.com.cn) characterized by a specific API request containing a millisecond timestamp and a subsequent HTTP response containing a 'download_link' field. This pattern is indicative of the SilverFox malware relay mechanism, likely used for staging and downloading additional malicious payloads.
This rule detects outgoing HTTP POST requests to the public BSC testnet RPC endpoint ('bsc-testnet-rpc.publicnode.com') containing an 'eth_call' request, which is a technique used by the 'EtherHiding' campaign to fetch malicious JavaScript payloads directly from blockchain smart contracts, bypassing traditional web-based C2 infrastructure.
Detects network traffic attempting to download malicious PowerShell payloads via WebDAV from the domain leaguejazire.com, which is associated with the ClearFake malware campaign.
Detects network traffic indicative of an adversary using the Ethereum blockchain as a dead-drop C2 channel. The rules identify specific JSON-RPC methods (eth_getTransactionByHash, eth_call) typically associated with querying blockchain data for C2 instructions, as well as non-browser processes initiating these requests to external endpoints.
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