MintsLoader AMSI Bypass via amsiInitFailed Reflection (via ps_script)

ATT&CK techniques

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the MintsLoader in-memory AMSI bypass that reflectively sets the amsiInitFailed field on the AmsiUtils type to disable the Antimalware Scan Interface before staging the next payload. Adversaries leverage this bypass to run malicious PowerShell content without scanning, making it a high-confidence defense-evasion indicator.

Reporting behind it

Related detections9 linkedT1685 — drag to rearrange

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MintsLoader AMSI Bypass via amsiInitFailed Reflection (via ps_script)

Pivot detection · T1685 · 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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