Lumma Stealer Payload Inbound

Tim Peck@timpeck

•updated Nov 10, 2025•0•16

This rule detects the inbound transfer of a Lumma Stealer payload over HTTP. Specifically, it looks for a unique content string within the HTTP response body, indicating the download of a DLL file associated with Lumma Stealer. The content string 'filename="fuckingdllENCR.dll"' is a strong indicator of this specific malware.