Detections

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

3,627 detections

Detects the use of 'osascript' to display credential prompts or 'dscl' with authentication-related arguments, which could indicate an attempt to phish user credentials or enumerate/create accounts on macOS systems.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
005
This rule detects potential command and control (C2) beaconing activity by identifying devices communicating with known suspicious remote IP addresses at regular, repeating intervals. It calculates the time difference between consecutive connections to specific suspicious IPs and identifies devices that establish at least three connections within one-hour bins, adhering to a 1 to 15-minute heartbeat interval.
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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 attempts to access macOS Keychain items using 'osascript' executed from common shell processes. This activity can indicate an adversary attempting to steal credentials or other sensitive information stored in the Keychain.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
005
Detects the use of 'rm' or 'unlink' commands to forcefully delete specific files or directories within the '/tmp' directory. The targeted files/directories ('osalogging.zip', '/tmp/sync', '/tmp/macsync_') could indicate cleanup activities after a malicious operation or system compromise, potentially related to macOS systems.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
105
This rule detects potentially malicious activity related to the 'node-gyp' build tool used by npm. It monitors for two patterns: 1) npm spawning node-gyp, which can be an automated trigger for malicious binding.gyp files, and 2) node-gyp spawning node.exe with command-line arguments indicative of obfuscated JavaScript (e.g., base64 encoding, eval, AES-GCM patterns), a technique often seen in malicious Node.js packages.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
001
Detects instances where the FFmpeg or FFplay multimedia frameworks spawn unexpected child processes. This behavior is indicative of successful exploitation of the RASC/DLTA codec heap overflow vulnerability, where a malicious media file triggers arbitrary code execution.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
001
Detects instances where Claude AI-related processes (claude, claude-code) or Node.js processes associated with Claude launch suspicious commands or scripts such as setup scripts, base64-encoded commands, shell interactions, or external network connections. This behavior is indicative of potential supply chain compromise or malicious use of AI-assisted coding tools to execute arbitrary system operations.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
001
Detects the spawning of shell or scripting processes from IDEs, code editors, or AI-assistant processes (e.g., 'claude', 'node'). The rule specifically flags potential reverse shell patterns or dangerous command-line flags often used during development or exploitation, such as '--dangerously-skip-permissions'.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
001
This rule detects when the node.exe process initiates an outbound network connection to a specific set of non-standard, often high-numbered ports (8443, 8445, 8453, 5555, 56001-56003) over the public internet. This behavior is often indicative of potential command and control (C2) communication, reverse shells, or malicious scripts executing within a Node.js runtime environment.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
002
Detects Python processes that combine potentially dangerous pickle deserialization (pickle.loads) with network-fetching libraries (urllib, requests, socket) and decoding methods (b64decode, fromhex). This pattern is consistent with backdoors or remote access tools (RATs) that fetch encoded payloads over the network and execute them directly in memory via deserialization.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
001
Detects Python processes executing complex, multi-layered decoding chains (Base64, ROT13, and Hex) in their command line arguments. This pattern is often used by malicious AI skill backdoors, such as ClawHub, to obfuscate payload execution and evade signature-based detection.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
001
Detects instances where code editors like Cursor or Claude execute shell commands or CLI tools often used for configuration, network activity, or credential interaction. This pattern may indicate malicious exploitation of editor configuration files (e.g., MCP configuration) or unauthorized use of the editor environment to execute shell commands.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
102
This rule monitors process command line arguments for a combination of programming language interpreters (java, python, node, .NET, go) and keywords commonly associated with malware, payloads, shellcode, or injection techniques. This is intended to identify suspicious execution patterns that may indicate the staging or execution of malicious code.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
004
This rule detects network connections or DNS queries to known public tunneling services (e.g., Cloudflare Tunnel, localtunnel, bore, devtunnels) made by processes other than common web browsers. Attackers frequently use these services to bypass firewalls and establish unauthorized reverse shells or persistent C2 channels.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
002
Correlates a user passing a CAPTCHA gate (Cloudflare Turnstile, reCAPTCHA) with an immediate subsequent connection to an unknown, low-prevalence domain hosting the actual phishing landing page.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
208
Identifies the macOS stealer utilizing osascript to pop a fake system dialog, requesting the user's administrator password for privilege escalation.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
108
Detects unauthorized modification or dropping of model files directly into the local Hugging Face cache directory (~/.cache/huggingface/hub) by non-standard development processes, indicating an attempt to swap legitimate models for backdoored ones.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
408
Detects command lines consistent with ArachneC2 implant generation and hardening options.
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Smarth Arora@smarthxarora
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Detections.ai Community
4 months ago
006
This rule detects pre-payload beaconing activity associated with the Meow RAT malware. It covers both network-based detection (outbound HTTP POST to known C2 domains and paths) and endpoint-based detection. Endpoint detection includes 'curl' processes communicating with known C2 infrastructure, 'osascript' processes spawned in the context of 'curl' C2 communication, and 'curl' commands using specific flags ('-k', '-s') along with a known build hash. This activity typically occurs before the main destructive payload is delivered.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
006
Identifies the Python script explicitly reading developer secrets including AWS credentials, SSH private keys, and Kubernetes configuration files.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
106
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