Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
11,839 detections
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Detects web or FTP server parent processes (such as apache2, httpd, nginx, php-fpm, or proftpd) spawning shell or utility processes (such as bash, sh, python, nc, curl, wget), which is consistent with webshell execution or post-exploitation activities.
Detects modifications to the Tor configuration file (torrc) that permit SSH traffic (port 22) in the exit policy, followed by a Tor service reload or restart on the same device within a 4-hour window. This behavior may indicate an adversary setting up an onion routing proxy or covert tunnel.
Detects PowerShell being launched directly from the Windows Run dialog
(explorer.exe parent) with a hidden window and a download/execution cradle in the
command line. This is the core artifact of ClickFix campaigns, where the victim is
lured to an Amazon-themed decoy page, copies a pasted command, and executes it from
Run to retrieve and run the next-stage malware.
(explorer.exe parent) with a hidden window and a download/execution cradle in the
command line. This is the core artifact of ClickFix campaigns, where the victim is
lured to an Amazon-themed decoy page, copies a pasted command, and executes it from
Run to retrieve and run the next-stage malware.
Detects a sequence of events on a Linux device where a sudo command execution is followed within 15 minutes by a Perl process executing base64 decoding commands within the same SSH session.
Detects the execution of rm commands using force flags to delete multiple critical appliance, system, and web server log files simultaneously on Linux hosts.
Detects cmd.exe executing a ping-based delay to loopback followed by self-deletion of the batch script (%~f0), as well as bulk deletion of common archive and executable files, typically associated with malware droppers like RareWolf.
Detects anomalous activities associated with potential PHP2Shell exploitation or webshell deployment where a web server worker (such as Apache, HTTPD, or PHP) spawns a Unix shell containing suspicious utility tokens, drops a PHP file outside excluded directories, or creates a PHP session-derived file.
Detects suspicious command execution activities using Azure RunCommand, Custom Script Extension, or Azure Connected Machine Agent combined with potentially malicious command arguments or tools such as PowerShell encoded commands, 'IEX', download strings, certutil, whoami, base64, curl, or wget.
Detects the modification or setting of the execInstalledOnly parameter to false, 0, or disabled on VMware ESXi or Linux hosts via process execution command lines or syslog messages, often associated with running uninstalled or arbitrary scripts/binaries in virtualized environments.
Correlates an inbound connection to a Python/Xoscar/Xinference pool process with an outbound connection from a shell spawned by that same pool process shortly afterward, potentially indicating exploitation and reverse shell activity.
Detects command output staged in a temporary file (/tmp/nx_cmd.txt) by a Unix shell spawned from ExifTool or Perl, typically resulting from Gotenberg CVE-2026-42589 exploitation, or detects the specific staging filename behavior independently.
Detects host reconnaissance activities (such as whoami or systeminfo) executed via Remote Monitoring and Management (RMM) tools or accompanied by suspicious PowerShell download and execution activity within a specific time window.
Detects behavioral indicators of an SSH or autossh reverse tunnel (-R) executed with no remote command (-N) and host-key checking disabled, combined with network connections to a known command and control IP address.
Detects indicators of ToolShell web shell creation (spinstall0.aspx) and ASP.NET machine key harvesting activities (reading web.config or accessing validationkey/decryptionkey materials via w3wp child processes or file access audits) on SharePoint servers.
Detects a sequence where a SharePoint application pool worker process (w3wp.exe) spawns a command shell (cmd.exe, powershell.exe, pwsh.exe) related to SharePoint, followed shortly (within 1 hour) by high-fidelity lateral movement tooling or remote execution techniques (such as PsExec, WMI, PowerShell remoting, or scheduled tasks) on the same host.
Detects the execution of built-in Windows utilities such as vssadmin, wmic, wbadmin, and bcdedit performing recovery inhibition actions, including deleting volume shadow copies, resizing shadow storage, clearing the backup catalog, disabling recovery options, and configuring boot policies to ignore failures.
Detects a web browser spawning a script interpreter or dual-use
LOLBin, the execution hand-off typical of an AI-drafted phishing lure where the
victim clicks a link/attachment and content is immediately executed by
PowerShell, cmd, mshta, wscript or cscript. Legitimate browsers almost never
spawn these interpreters as direct children, making this a high-fidelity signal
of a browser-to-interpreter phishing chain as described for AI-assisted
cybercrime activity.
LOLBin, the execution hand-off typical of an AI-drafted phishing lure where the
victim clicks a link/attachment and content is immediately executed by
PowerShell, cmd, mshta, wscript or cscript. Legitimate browsers almost never
spawn these interpreters as direct children, making this a high-fidelity signal
of a browser-to-interpreter phishing chain as described for AI-assisted
cybercrime activity.
Detects a web server process (apache2, httpd, php-fpm) spawning a Unix shell (dash/sh) that executes discovery commands such as id, whoami, hostname, or find. This is the durable post-exploitation signature of the wp2shell WordPress pre-auth RCE chain (CVE-2026-63030, CVE-2026-60137), where a malicious plugin or webshell executes commands through the web stack.
Detects outbound network connections to known ClickFix campaign domains or the execution of the finger utility connecting to public IP addresses.
Detects a VS Code-family editor or extension host process running 'git config --global user.email' and, within one minute from the same parent process, a curl public-IP lookup (ifconfig.me / api.ipify.org), the host-profiling step of the trojanized anthropic.claude-code loader.
Detects a VS Code-family editor or extension host process running 'git config --global user.email' and, within one minute from the same parent process, a curl public-IP lookup (ifconfig.me / api.ipify.org), the host-profiling step of the trojanized anthropic.claude-code loader.
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