Suspicious Script Interpreter Command Recorded in Explorer RunMRU History (via registry_set)

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 the Windows Run dialog history under the Explorer RunMRU registry key recording a script-interpreter command such as mshta, powershell, or curl, the residual artifact left when a victim pastes a ClickFix command during this Booking.com themed phishing campaign. Adversaries drive users to run attacker-supplied commands via the Run dialog, so an interpreter invocation captured in RunMRU is a reliable sign of ClickFix-style execution.

Reporting behind it

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Suspicious Script Interpreter Command Recorded in Explorer RunMRU History (via registry_set)

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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