Scheduled Task Creating Per-Minute Hidden PowerShell Execution

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 schtasks creating a task that runs at a one-minute interval and launches a hidden PowerShell script. The GPU miner campaign registered a scheduled task firing every minute to run hidden powershell against cor.ps1 or core.ps1 for persistence and re-infection. A minute-cadence hidden PowerShell task is a strong indicator of automated malware persistence.

Reporting behind it

Related detections9 linkedT1053.005 — drag to rearrange

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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

Scheduled Task Creating Per-Minute Hidden PowerShell Execution

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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