Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
10,670 detections
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Detects when the same initiating process stops or deletes Windows services and subsequently deletes scheduled tasks or WMI event subscriptions within a 15-minute window on a single device, potentially indicating defense evasion or clean-up actions.
Detects Gryxa staging behavior where files are written across 2 or more distinct toolkit directories (such as WinRTCS, WER .wucache, and Diagnosis .etlcache) within a 1-hour window on a single device.
Detects potential defense evasion activity where Windows Defender configurations are modified or disabled, followed closely within 20 minutes by a silent, quiet, or unattended software uninstallation initiated by a script interpreter or command processor on the same device.
Detects inbound UDP traffic on port 443 (QUIC) targeting known HTTP/3-capable server processes (such as Caddy, Traefik, Cloudflared) followed closely by the termination or crash of that process, which may indicate an exploit attempt or vulnerability leading to denial of service.
Detects the execution of tools and commands commonly used to enumerate Group Policy Objects (GPOs) within an environment, such as gpresult.exe with specific flags, PowerShell scripts querying GPO modules, or ldifde.exe checking group policy containers.
Detects potential bootkit activity or unauthorized modifications to the EFI system partition by correlating non-standard .efi file writes with subsequent execution of boot configuration utilities like bcdedit or mountvol within a 30-minute window.
Detects web server processes (such as nginx, apache2, httpd, uwsgi, gunicorn, php-fpm) spawning command-line utilities typically used for system and user discovery (such as id, whoami, groups, hostname, uname, netstat, ps, etc.), which often indicates web application exploitation and remote code execution.
Detects AppInit DLL registry modifications referencing DLLs located in user-writable directories (such as AppData, Temp, Users\Public, or Downloads), which may indicate adversary persistence or process injection configuration.
Detects when a USB mass storage device is connected to a host and is followed shortly thereafter by a large volume of file creations or modifications on a removable drive, which may indicate data exfiltration or staging.
Detects known Indicators of Compromise (IOCs) associated with the Ebury Linux backdoor, including specific file hashes, implants like libkeyutils.so.1.10.2, malicious IP connections, and associated network/email artifacts using Microsoft Defender XDR advanced hunting.
Detects known Indicators of Compromise (IOCs) associated with the Ebury Linux backdoor, including specific file hashes, implants like libkeyutils.so.1.10.2, malicious IP connections, and associated network/email artifacts using Microsoft Defender XDR advanced hunting.
Detects potential Linux privilege escalation and persistence activities by monitoring for the creation of persistence scripts in post_boot.d, modifications to the sudoers.template file appending NOPASSWD, or system configuration rebuilds shortly after sudoers template changes.
Detects potential data staging and exfiltration where sensitive or investigation-related files are compressed using archive utilities or PowerShell, followed closely by upload activities to Backblaze B2 cloud storage via CLI tools, rclone, or direct API connections.
Correlates a running ProFTPD FTP server process listening on TCP port 21 with commands checking or loading the mod_copy module on the same Linux device using Microsoft Defender XDR telemetry.
Detects inbound external connections on TCP port 541 (FGFM/FMG-Access protocol) correlated with the creation of .tm archives on the same device, or connections from known malicious IP addresses communicating over TCP 541.
Detects outbound network connections to domains associated with the AdFection / Discover-Tech / Controlium threat infrastructure using a Sentinel watchlist, filtering out known browser activity or allowing custom domain lists.
Detects PowerShell processes spawned via shortcut files (lnk) using suspicious command-line parameters that subsequently create both a text file and a Discord-named executable on the same device within a 10-minute window.
Detects network, file, process, and email interactions associated with known IOCs related to Power BI phishing and rogue ScreenConnect campaigns over a 30-day lookback period.
Detects persistence mechanisms established via Registry Run/RunOnce keys, Startup folder modifications, or scheduled task creation using specific tool names such as client32 or pcictlui.
Detects msiexec.exe spawning scripting or programming engines (such as PowerShell or Python) that perform LDAP directory searches and establish outbound external network connections within a specific time window.
Detects msiexec.exe spawning scripting or programming engines (such as PowerShell or Python) that perform LDAP directory searches and establish outbound external network connections within a specific time window.
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