Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

5,158 detections

This rule detects multiple failed SSL login attempts from a single source IP to a destination IP within a 24-hour period. A threshold of 10 failed attempts is used to identify potential brute-force attacks or credential stuffing against SSL-enabled services.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
001
This rule identifies if a given IP address falls within the known IP ranges used by Apple's iCloud Private Relay service. It retrieves a list of IPv4 and IPv6 ranges from a public GitHub repository and then checks if a specified IP address is contained within any of these ranges. This can be used to identify traffic potentially obfuscated by iCloud Private Relay.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
101
This rule detects network activity associated with a known malicious domain 'facture-in.pages.dev' or suspicious HTTP response patterns often observed in phishing kits or web-based redirection, such as 'BOT BLOCKED', 'no_mouse', 'wrong_timezone', or specific language-localized error messages.
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Duo Tech@duotech
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Detections.ai Community
4 months ago
000
Detects attempts to generate SQL injection payloads by abusing Ollama servers, specifically targeting unauthenticated HTTP POST requests to /api/generate or /api/chat on port 11434. The rule looks for SQL injection indicators and VAPT framework specific strings within the request context, URI, or user agent.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
105
This rule detects network connections on port 21 (FTP) where the remote URL contains keywords indicative of NetWare directory listings or related services (netware, NDS, bindery, ncf). This could indicate an attempt to discover or interact with NetWare services, potentially exploiting vulnerabilities like Squidbleed.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
001
Detects anomalous device network activity involving 5G-specific protocol ports (e.g., GTP-U, SIP). The rule aggregates unique port usage per device over 1-hour intervals to identify potential network reconnaissance, scanning, or unauthorized control plane communication.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
001
This rule detects network connections on port 21 (FTP) where the remote URL contains keywords indicative of NetWare directory listings or related services (netware, NDS, bindery, ncf). This could indicate an attempt to discover or interact with NetWare services, potentially exploiting vulnerabilities like Squidbleed.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
001
This rule detects network connections made to specific non-standard ports (7777, 8080, 8443) where the remote URL contains substrings associated with proxy or tunneling activities ('proxy', 'tunnel', 'hide'). This behavior is commonly associated with malware attempting to evade security controls by routing traffic through unauthorized intermediaries or obfuscated tunnels.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
101
Detects anomalous device network activity involving 5G-specific protocol ports (e.g., GTP-U, SIP). The rule aggregates unique port usage per device over 1-hour intervals to identify potential network reconnaissance, scanning, or unauthorized control plane communication.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
001
This rule detects potential ransomware lateral movement patterns by correlating specific network connection attempts (SMB/RDP/RPC) with the observed creation of files having the '.prinzeugen' extension on the same host within a 2-hour window. This behavior is indicative of a ransomware strain propagating across the network and performing encryption.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
001
Detects unauthenticated network connections to AutoGen Studio's Management Control Plane (MCP) WebSocket paths. AutoGen Studio's AuthMiddleware explicitly skips authentication for '/api/mcp/*' and '/api/ws/*' paths, typically on port 8081. This rule identifies attempts to access these paths without authentication, which could indicate reconnaissance or exploitation attempts against a misconfigured or vulnerable AutoGen Studio instance.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
105
Detects anomalous network traffic patterns characteristic of the Grandoreiro banking trojan, which tunnels Command and Control (C2) communications over STUN/WebRTC (UDP port 3478). The rule identifies processes that are not known web browsers or conferencing applications initiating these STUN connections, a technique used by the malware to blend with legitimate collaboration traffic.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
001
Detects DNS TXT queries for the domain '_axiom-config.m100.cloud', which is associated with fileless payload retrieval techniques.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
001
This rule detects potential Command and Control (C2) communication activity by identifying instances of Domain Generation Algorithms (DGA). It monitors DNS query responses for patterns consisting of 8 to 16 lowercase alphabetic characters followed by common TLDs (com, net, org, ru, cc, su). An alert is triggered if 5 or more unique suspicious domains are queried by the same device within a one-hour window.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
204
Detects network connections to known malicious domains or IP addresses associated with Fortinet or Ivanti VPN phishing campaigns or command and control infrastructure. This rule identifies attempts to connect to fake VPN portals or communicate with adversary-controlled servers.
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nomit vyas@xoxo
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Detections.ai Community
4 months ago
309
Detects anomalous device network activity involving 5G-specific protocol ports (e.g., GTP-U, SIP). The rule aggregates unique port usage per device over 1-hour intervals to identify potential network reconnaissance, scanning, or unauthorized control plane communication.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
004
Detects network connections to the Telegram API, specifically to the /sendMessage or /getUpdates endpoints. This activity can be indicative of command and control (C2) communication or data exfiltration using Telegram as a covert channel.
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nomit vyas@xoxo
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Detections.ai Community
4 months ago
105
Monitors for the use of 'sshpass' to automate SSH logins, specifically targeting accounts commonly associated with Oracle/PeopleSoft administration (psoft, oracle, linuxadm) and bypassing strict host key checking. This technique has been observed in ShinyHunters attacks for lateral movement.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
1208
Monitors for the use of 'sshpass' to automate SSH logins using specific accounts commonly associated with Oracle/PeopleSoft administration (psoft, oracle, linuxadm) with disabled strict host key checking. This technique was observed in ShinyHunters attacks.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
408
Identifies the GhostSocks tunneling binary (or Go/Python equivalent) executing and establishing a SOCKS5 relay to an external node. This rule correlates process command line arguments indicative of GhostSocks or SOCKS5 server/relay/listen functionality with network connections on common SOCKS proxy ports (1080, 1081, 9050).
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
206
Detects network and DNS activity involving domains known to be used by the threat actor APT28 for command and control, specifically for hosting WebDAV payloads, malicious LNK files, and weaponized documents.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
001
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