Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects potential remote code execution against Xinference or Xoscar pool processes, identified by an inbound network connection accepted by a Python-based worker followed shortly by the spawning of a shell process (sh, bash, dash) by the same process.
Detects an Xoscar or Xinference Python actor pool process spawning a Unix shell child process with suspicious command-line flags (such as reverse shell indicators, downloads, or base64 decoding), potentially indicative of cloudpickle deserialization remote code execution (CVE-2026-49950).
Detects web server processes (Apache httpd, apache2, php-cgi, php-fpm) spawning a Unix shell (sh, bash, dash) that executes a wget or curl command piped directly into the shell for execution, indicative of potential remote code execution or web shell activity.
Detects multiple distinct source IPs sending forged 'pitboss PPE' authentication failure messages to NetScaler authentication endpoints within a short timeframe, associated with a fetch-based FreeBSD payload download (kw2-freebsd-x64-s11).
Detects HTTP requests containing serialized PHP objects in the Cookie header matching patterns associated with Zend Framework or Laminas gadget chains, characteristic of PHP object deserialization exploitation (e.g., PHPGGC style).
Identifies deployments of Gotenberg vulnerable to CVE-2026-42589 across multiple Microsoft Defender telemetry sources including TVM inventory, vulnerabilities, container images, listening services, and binaries on disk.
Detects sandbox or training hosts performing DNS resolution followed shortly by outbound connections to public IP addresses on ports 80 or 443, which may indicate a firewall misconfiguration or unauthorized egress from isolated environments.
Detects the execution of administrative commands and scripting interpreters spawned by the VMware Tools daemon (vmtoolsd), which may indicate an adversary leveraging ESXi guest operations for remote code execution.
Detects the creation of cook.pth or cook.py in Python site-packages or dist-packages directories by package managers or interpreters, followed by a Python interpreter execution on the same device within one hour. This pattern matches the malicious supply chain behavior observed in compromised LiteLLM versions (e.g., 1.107.0) utilizing .pth auto-import chains for persistence and execution.
Detects modification or creation of .htaccess files within WordPress directory structures followed within 24 hours by the creation or modification of .cache files in the same directory. This behavioral pattern is often indicative of web shell deployment or persistence installation via compromised web applications.
Detects abnormal PHP execution volume storms, process crashes handled by crash reporters (such as werfault.exe, apport, systemd-coredump), or application error events related to PHP, which may indicate denial of service attacks, exploitation attempts, or severe application instability.
Detects abnormal PHP execution volume storms, process crashes handled by crash reporters (such as werfault.exe, apport, systemd-coredump), or application error events related to PHP, which may indicate denial of service attacks, exploitation attempts, or severe application instability.
Detects web server processes writing PHP files into sensitive WordPress directories (such as mu-plugins or rank-math-pro/includes) shortly after deleting them within a 1-hour window. This behavior often indicates the rebuilding or updating of a webshell or backdoor for persistence.
Exposure-assessment hunt for endpoints running OpenCode and contacting OpenCode Console or AI provider APIs, to prioritise API key rotation after the October 2026 OpenCode breach.
Detects potential data exfiltration and credential hunting where an endpoint downloads a database backup using presigned URLs or cloud storage signatures within 6 hours of searching local files for API keys or private keys.
Detects a root SSH sign-in from a public IP address or known attacker IP, followed within 30 minutes by a write or modification to the root authorized_keys file on the same device.
Detects web server processes (such as apache2, nginx, httpd, php-fpm, or w3wp.exe) spawning shell interpreters (such as bash, sh, cmd.exe, or powershell.exe), which is a common indicator of web shell activity or application exploitation.
Detects web server worker processes (such as php-fpm, apache2, nginx, w3wp.exe) spawning download utilities like curl or wget, certutil with transfer flags, or initiating /dev/tcp network connections, which may indicate web application exploitation or webshell activity.
Detects web server processes (such as Apache, httpd, or PHP) spawning a Unix shell (sh, bash, dash) and executing discovery commands (such as id, hostname, uname) with output redirection to proof files or embedded in callback URLs via command substitution.
Detects potential vulnerability scanning, enumeration, or bulk data extraction against Request Tracker (RT) web paths by monitoring high request volumes, distinct URI counts, or large response byte sizes within CommonSecurityLog data.
Detects the creation or modification of web script files (.aspx, .jsp) within common web application directories by unusual processes (such as command shells or download utilities) or by non-standard user accounts, indicating potential web shell deployment.
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