Suspicious Encoded PowerShell Spawned from Explorer via ClickFix

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1059.001PowerShell
- T1204.002Malicious File
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects PowerShell launched directly by explorer.exe with an encoded command, the signature of the ClickFix fake-CAPTCHA lure that tricks users into pasting a command into the Run dialog. This chain delivered Lumma and Amadey and a Run-dialog spawned encoded PowerShell is highly abnormal.

Reporting behind it

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Suspicious Encoded PowerShell Spawned from Explorer via ClickFix

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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