Masquerading Noodlophile Payload Execution via Video File Double Extension (via process_creation)

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1036.007Double File Extension
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects execution of an image named with a video double extension such as .mp4.exe, the masquerading technique used by the Noodlophile stealer campaign delivered through fake AI video-generation platforms. Adversaries leverage a video-looking filename so users who expect a rendered clip instead launch the wrapper binary, making early detection critical for catching the intrusion at first execution before the CapCut loader and XWorm injection proceed.

Reporting behind it

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Windows Suspicious Double-Extension Execution via Parent Command Line

Windows File Creation: Suspicious LNK Double-Extension Targeted by Document/Image Prefixes

Windows File Events: Flag Files With Double Extensions (e.g., .docx.exe)

Masquerading Noodlophile Payload Execution via Video File Double Extension (via process_creation)

Pivot detection · T1036.007 · 7 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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