Suspicious Scheduled Task Running PowerShell Every Minute (via process_creation)

ATT&CK techniques

Execution → Priv Esc

Recon
Resource Dev
Initial Access
Execution
- T1053.005Scheduled Task
- T1059.001PowerShell
Persistence
- T1053.005Scheduled Task
Priv Esc
- T1053.005Scheduled Task
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects creation of a scheduled task with a minute-based recurrence whose action launches PowerShell, the persistence and beaconing mechanism used by the TinyNote backdoor of Camaro Dragon. High-frequency scheduled tasks driving PowerShell are unusual for legitimate software and typically indicate implant callbacks.

Reporting behind it

Related detections9 linkedT1053.005 — drag to rearrange

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Windows Task Scheduler persistence using svchost-launched PowerShell with hidden/Bypass flags

Windows schtasks.exe Create Executes File from AppData\Local

Windows schtasks Creates Registry-Backed Base64 PowerShell Payload via Encoded Command

Windows ChromeLoader Execution via Scheduled Task and Hidden PowerShell Launch

Windows process command lines matching May 2020 Turla ComRAT command patterns

Windows Security: checkadmin.exe TargetUserName starting with Administr (Event ID 4799)

Windows Scheduled Task Creation via PowerShell Using schtasks.exe with ONLOGON/DAILY/ONIDLE/HOURLY

Suspicious Scheduled Task Running PowerShell Every Minute (via process_creation)

Pivot detection · T1053.005 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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