Malicious ClickFix PowerShell DownloadFile Loader with Hidden Window

ATT&CK techniques

Execution

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

What it detects

This rule detects a hidden-window PowerShell process using DownloadFile to fetch a script from a remote host, the NetSupport RAT ClickFix loader pattern. Victims pasted a command that ran PowerShell with hidden window and no-profile flags to download and then execute a follow-on .ps1 payload. Hidden PowerShell combined with a remote file download is a classic first-stage loader behavior.

Reporting behind it

Related detections9 linkedT1059.001 — drag to rearrange

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Suspicious Cleo Autorun Health Check File Drop (via file_event)

Suspicious PowerShell Spawned by VBScript for RMM Delivery

Suspicious PowerShell Loading Fake Edge Update Script

Malicious ClickFix PowerShell DownloadFile Loader with Hidden Window

Pivot detection · T1059.001 · 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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