Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects MYRA Linux RAT establishing cron-based persistence by scheduling /usr/local/lib/.cache-update.sh to execute every 13 minutes with a fileless fallback chain using memfd_loader and agent_launcher. Indicative of the apintergrationpost npm supply chain attack by threat actor kimijohn01.
Detects the creation of scheduled tasks (schtasks.exe) spawned by common scripting or social engineering-related parent processes (PowerShell, Cmd, WScript, MSHTA). The rule specifically looks for payloads associated with common attack patterns, such as downloading remote content or executing encoded commands, which indicates potential persistence or payload delivery activities.
Detects a deceptive scheduled task named 'MicrosoftEdgeUpdate' executing PowerShell Net.WebClient download cradles. This rule specifically looks for the creation of a scheduled task using 'schtasks.exe' that includes 'MicrosoftEdgeUpdate' in its name and 'Net.WebClient' in its command line, indicating an attempt to download content using PowerShell's WebClient object, potentially for malicious purposes.
Detects scheduled tasks named "CheckRealtekAudioVersion" or "RealtekAudioEnhancements64" created for AsyncRAT persistence. This rule specifically looks for the execution of 'schtasks.exe' with the '/create' argument and the presence of these specific task names in the command line, which are known indicators of AsyncRAT establishing persistence.
Detects the creation of both 'UpdateSystem' and 'UpdateUser' scheduled tasks on the same device within a ten-minute window, a distinctive persistence pattern associated with the Gentlemen Ransomware.
Identifies the creation of scheduled tasks masquerading as Realtek audio services for persistence, often associated with AsyncRAT.
Detects schtasks creating a one-time task on another host using supplied credentials and a batch file under Windows Temp, executed as SYSTEM. This behavior is indicative of an adversary establishing persistence or lateral movement by scheduling malicious code to run with high privileges on a remote system.
This rule detects the creation or modification of scheduled tasks that launch executables from the Windows Fonts directory with SYSTEM-level persistence. It specifically looks for `schtasks` or `powershell` commands that include patterns indicative of an executable in the Fonts directory and a startup trigger (e.g., 'onstart', 'atstartup', '/ru system'). The XQL view provides actor and causality fields for investigation.
Identifies the creation of the BackupCheck scheduled task designed to repeatedly trigger the setup.exe doit sideload chain, associated with the Nimbus Manticore threat actor.
Detects suspicious cron utility activity, including modifications or executions, with specific indicators associated with the MYRA malware family. This rule identifies attempts to establish persistence or execute malicious code via scheduled tasks on Linux systems.
Detects the creation of a scheduled task using 'schtasks' with 'SYSTEM' privileges, masquerading as Adobe or OneDrive, and pointing to an executable in a user-writable path (Temp, AppData, ProgramData, or Users\Public). This pattern is often used by adversaries for persistence or privilege escalation.
This rule detects a highly complex correlation where a web server process (w3wp.exe) drops a file named 'install-persistent.php' and then, within one hour, 'schtasks.exe' executes a command that includes 'install-persistent.php'. This pattern is indicative of a web shell being dropped and then scheduled for execution, potentially as part of a supply chain compromise.
Detects schtasks.exe establishing persistence using task names that spoof legitimate Windows services. This rule specifically looks for the creation of scheduled tasks via 'schtasks.exe /create' command line that include task names such as 'Synchronize OS', 'Windows System Health', 'BackupCheck', or 'WindowsSecurityUpdate', which are commonly used by adversaries to blend in with legitimate system tasks.
Detects creation of persistence tasks executing XML payloads.
Detection of scheduled tasks like DiskDiagnosticDataCollector created by GammaWorm to launch ADS payloads.
This rule detects the creation of scheduled tasks or 'at' jobs initiated by VBScript engines (wscript.exe or cscript.exe). This behavior can be indicative of malicious activity, such as persistence mechanisms established by malware or phishing attacks that leverage VBScript to schedule future execution.
Udm Task Fonts Startup
YARA-L
Targets the startup task behaviour that launches a Fonts-hosted executable with SYSTEM-level persistence. The UDM rule retains principal and target context for correlation.
Udm Task Fonts Startup
YARA-L
Targets the startup task behaviour that launches a Fonts-hosted executable with SYSTEM-level persistence. The UDM rule retains principal and target context for correlation.
Correlates the MiniJunk V2 persistence task with the execution of the renamed SoftwareLicencing.exe. This rule detects the creation of a scheduled task named "Synchronize OS" via schtasks.exe, and then correlates it with the execution of a file named "SoftwareLicencing.exe" on the same device. This behavior is indicative of the MiniJunk V2 malware used by the Screening Serpens APT group.
Identifies the creation of scheduled tasks for Windows System Health Monitor persistence, specifically looking for 'schtasks.exe' creating tasks with names like 'Windows System Health Monitor' or 'Windows System Health Check', in conjunction with 'RuntimeHost.exe' activity. This pattern is indicative of cryptojacking campaigns abusing ScreenConnect.
Identifies the creation or execution of a 'VirtualSmokestGuy' scheduled task, which is associated with CastleRAT for persistence. The rule specifically looks for command-line activity containing 'VirtualSmokestGuy' and excludes specific numerical strings to reduce false positives.
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