Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Loader used in click-hijacking traffic distribution scheme
USB worm and loader leveraging living-off-the-land binaries
Detects unauthorized cron job creation or modification associated with cryptominer persistence. The rule monitors for common persistence indicators such as referencing 'lambsys', 'isp.sh', or 'procq' within cron-related commands and shell execution patterns that suggest malicious automated tasks in Linux environments.
High-velocity ransomware-as-a-service with aggressive leak-site extortion
Latin American banking trojan using DLL side-loading and overlay attacks
AI-powered phishing-as-a-service abusing device-code authentication
Banking trojan and loader using malicious Office macro delivery
This rule detects the creation of a scheduled task named 'WindowsVaultSyncService' either through the 'schtasks.exe' command-line utility or via 'ScheduledTaskCreated' device events. This specific task name, combined with a potentially misleading description, could indicate malicious activity attempting to establish persistence or execute code.
Credential and browser data stealer distributed via OXLOADER campaigns
Loader malware delivering follow-on ransomware payloads
Detects unauthorized modifications to cron jobs or RC scripts on Linux and BSD edge appliances, which is a persistence technique observed in the VerdantBamboo BRICKSTORM campaign. The rule flags suspicious file modifications in persistence-related directories, excluding activity from legitimate package managers.
Detects malicious scheduled task activity attributed to the Payouts King threat actor. The rule monitors for the creation, execution, and deletion of tasks using specific naming conventions ('Mozilla\UpdateTask', 'Mozilla\ElevateTask') or patterns (e.g., /ru SYSTEM, /sc ONSTART) executed by non-standard parent processes.
Detects the creation of suspicious scheduled tasks by monitoring Windows Event Logs (EventCode 4698) for task XML content and process creation events (EventCode 1) for the 'schtasks.exe' utility. The rule identifies tasks created in user-writable paths (like AppData or Temp), tasks containing suspicious keywords like 'hidden' or specific Mozilla update patterns, tasks configured to run as SYSTEM, and tasks spawned by non-standard parent processes.
Clipboard hijacking malware for cryptocurrency address substitution
Open-source derived remote access trojan with plugin architecture
Detects the creation of a scheduled task masquerading as a legitimate Mozilla maintenance task (UpdateTask or ElevateTask). The rule specifically flags when such tasks are configured to run as SYSTEM, triggered on system start, and are created via a command line executed by a parent process of cmd.exe, which is indicative of Payouts King ransomware persistence activity.
Detects BQTLock ransomware (BaqiyatLock) establishing persistence by creating scheduled tasks via schtasks.exe. The detection monitors for scheduled task creation commands initiated by the ransomware payload (BQT.exe) or its loader (start.exe), specifically targeting tasks that execute files from high-risk paths like AppData or Temp, or directly reference BQT.exe.
This rule detects the creation of scheduled tasks that are configured with high-privilege execution levels (SYSTEM or highest) or that reference suspicious file paths and filenames commonly associated with persistence mechanisms or VM image masquerading (e.g., QEMU files, .qcow2, vault.db). It monitors both command-line execution of schtasks.exe (Sysmon Event ID 1) and Task Scheduler configuration events (Windows Event ID 4698).
Detects the creation of scheduled tasks using schtasks.exe that reference specific QEMU binaries, the 'TPMProfiler' task name, or suspicious disk image file extensions (vault.db, bisrv.dll, custom.qcow2). This activity is associated with GOLD ENCOUNTER, STAC4713, and STAC3725, who use QEMU-based virtual environments for defense evasion and persistence.
Detects instances where a Node.js process spawns the 'crontab' utility, likely to modify user cron jobs. This is a common technique used by attackers to achieve persistence by scheduling periodic execution of malicious scripts or reverse shells.
Detects the creation of scheduled tasks designed for persistence, typically used by Operation Poisson (e.g., Demon agent, Python keyloggers). The rule identifies tasks that execute script interpreters (powershell.exe, cmd.exe, wscript.exe, cscript.exe, python.exe, pythonw.exe) with indicators of suspicious intent, such as hidden windows (/WindowStyle Hidden, /c) or elevated privileges (HighestAvailable, HighestPrivilege, AtLogon).
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