Detections

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

7,128 detections

Detects loading of kernel modules for deep system persistence
avatar
Darshan Thummar@Mighty
avatar
Detections.ai Community
4 months ago
002
Detects SSH agent forwarding being abused for lateral movement
avatar
Darshan Thummar@Mighty
avatar
Detections.ai Community
4 months ago
002
Detects Spring4Shell remote code execution exploitation attempts
avatar
Darshan Thummar@Mighty
avatar
Detections.ai Community
4 months ago
002
This rule detects network connections from devices to a predefined list of known malicious domains. It identifies attempts by internal systems to communicate with command and control servers, phishing sites, or other infrastructure associated with threat actors.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
004
This rule detects potential reverse shell command execution by monitoring process creation events (EventID 4688) for specific command-line strings commonly associated with reverse shells. It looks for 'bash -i', '/bin/bash', 'nc -e', and 'powershell -NoP' in the command line.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
104
This rule detects the creation of web shell files (ASPX, PHP, JSP) in common web server directories such as 'wwwroot', 'inetpub', or 'var\\www'. This activity is indicative of an adversary establishing persistent access to a web server.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
4 months ago
204
Detects the loading of known trojanized native extensions (.abi3.so files) used in compromised bioinformatics PyPI packages (like ensmallen) as part of the Miasma/Hades campaign. Specifically targets 'ensmallen_haswell.abi3.so' and 'ensmallen_core2.abi3.so'.
avatar
Ethan Andrews@eandrews
avatar
Federal Signal Detections
5 months ago
3010
Detects anomalous processes targeting modern AI developer credential files and configuration files for tools like Claude, Gemini, and Cursor, a behavior exhibited by IronWorm.
avatar
Ethan Andrews@eandrews
avatar
Federal Signal Detections
5 months ago
14034
This rule detects suspicious access to the UniFi OS JWT secret file (jwt.yaml) by processes other than the legitimate UniFi core components. It monitors for direct file access events (read, copy) and command-line executions that target the jwt.yaml file. This activity could indicate an attempt to extract sensitive credentials, potentially leading to unauthorized access or privilege escalation within the UniFi environment.
avatar
Ethan Andrews@eandrews
avatar
Federal Signal Detections
5 months ago
108
This rule detects the creation, modification, or renaming of files associated with PCPJack/TeamPCP malware on Linux systems. It specifically looks for these activities in common temporary directories (`/tmp/`, `/dev/shm/`, `/var/tmp/`) and for files with names matching known PCPJack/TeamPCP artifacts (e.g., `pcpcat`, `teampcp`, `xmrig`, `proxy.sh`, `kube.py`, `.pcpx`, `.pcp`) or hidden files (starting with a dot). This activity often indicates the initial staging or persistence mechanisms of the malware.
avatar
Subash Ghimire@iamsubashg
avatar
Detections.ai Community
5 months ago
7024
This rule detects network traffic containing the string "/etc/pam.d/" over TCP port 22 (SSH). This could indicate an attempt to modify Pluggable Authentication Modules (PAM) configuration files, potentially for authentication bypass or persistence on a Linux system. The detection is focused on traffic originating from the home network to the home network, suggesting internal activity or a compromised host communicating within the network.
avatar
Darshan Thummar@Mighty
avatar
Detections.ai Community
4 months ago
005
This rule detects attempts to flush auditd rules by looking for the command 'auditctl -D' within TCP traffic on port 22 (SSH). This action is often performed by attackers to remove monitoring and evade detection after gaining access to a system.
avatar
Darshan Thummar@Mighty
avatar
Detections.ai Community
4 months ago
004
This rule detects attempts to push firmware or bootkit images to a device via a remote SSH session. It specifically looks for the commands 'dd if=' and '/dev/' within TCP traffic directed to port 22 (SSH), indicating an attempt to write data directly to a device file, which is a common method for flashing firmware or installing bootkits.
avatar
Darshan Thummar@Mighty
avatar
Detections.ai Community
4 months ago
005
This rule detects network traffic containing the string "signal(SIGTERM, SIG_IGN)" case-insensitively, indicating a process attempting to ignore the SIGTERM signal. This behavior can be used by malware or adversaries to achieve persistence on Linux systems by making a process harder to terminate gracefully.
avatar
Darshan Thummar@Mighty
avatar
Detections.ai Community
4 months ago
004
This rule detects attempts to clear system log files, specifically '/var/log/', via a remote SSH connection. It looks for the string "> /var/log/" within TCP traffic on port 22 (SSH) flowing from a client to a server, ignoring case. This activity is often associated with an attacker trying to cover their tracks by removing evidence of their presence.
avatar
Darshan Thummar@Mighty
avatar
Detections.ai Community
4 months ago
004
Detects Node.js or Bun processes making network connections to the GitHub API. This rule is designed to identify potential exfiltration attempts, specifically referencing the Miasma campaign which spoofs a 'python-requests/2.31.0' User-Agent to evade network detection while exfiltrating credentials to api.github.com/repos/.
avatar
Ethan Andrews@eandrews
avatar
Federal Signal Detections
5 months ago
10023
This rule detects the creation of a systemd timer via a remote SSH session. It specifically looks for TCP traffic on port 22 (SSH) containing the commands 'systemctl enable' and '.timer' (case-insensitive), indicating an attempt to enable a systemd timer unit.
avatar
Darshan Thummar@Mighty
avatar
Detections.ai Community
4 months ago
005
Monitors for network connections originating from the VSCode extension host process to GitHub API endpoints immediately following a new extension installation. This may indicate token exfiltration or repository enumeration from a malicious extension.
avatar
Ethan Andrews@eandrews
avatar
Federal Signal Detections
5 months ago
13038
Detects the anomalous download of the Bun JavaScript runtime during npm/node-gyp installation phases. The Miasma malware uses a standalone Bun runtime to execute its obfuscated payloads outside of standard Node.js security tooling contexts to evade monitoring.
avatar
Duo Tech@duotech
avatar
Detections.ai Community
5 months ago
409
Detects the creation of zip archives matching the specific naming convention (Unix-[HOSTNAME]-[ID].zip) used by the UnixStealer malware family. Detecting these host artifacts enables early discovery before successful exfiltration.
avatar
Ethan Andrews@eandrews
avatar
Federal Signal Detections
4 months ago
205
Detects the initial execution phase of the Phantom Gyp technique, which is used by the Miasma worm. This technique abuses the binding.gyp file with a command substitution pattern to execute a silent payload, bypassing standard npm lifecycle scripts.
avatar
Ethan Andrews@eandrews
avatar
Federal Signal Detections
5 months ago
209
Page 263 of 340