Suspicious MSHTA Remote HTML Application Execution via Amatera Stealer ClickFix

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1218.005Mshta
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects mshta.exe launching an HTML application from a remote URL, the ClickFix delivery step for the Amatera Stealer 4.0.2 variant. The victim is lured into running a copied command that pulls an HTA from attacker infrastructure. Remote mshta execution is a common living-off-the-land loader technique and should be reviewed against expected administrative activity.

Reporting behind it

Related detections9 linkedT1218.005 — drag to rearrange

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Suspicious MSHTA Remote HTML Application Execution via Amatera Stealer ClickFix

Pivot detection · T1218.005 · 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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