Nosferatu is a Lsass NTLM Authentication Backdoor
How It Works
First, the DLL is injected into the lsass.exe process, and will begin hooking authentication WinAPI calls. The targeted function is MsvpPasswordValidate(), located in NtlmShared.dll. In the pursuit of not being detected, the hooked function will call the original function and allow for the normal flow of authentication. Only after seeing that authentication has failed will the hook swap out the actual NTLM hash with the backdoor hash for comparison.
Nosferatu must be compiled as a 64 bit DLL. It must be injected using the a DLL Injector with SeDebugPrivilege.
You can see it loaded using Procexp:
Login example using Impacket:
A data protection platform is a unified system that helps organizations discover, classify, monitor, and…
AI companies operating in or around Switzerland face a compliance challenge that most legal teams…
Two major data privacy laws now govern how organizations handle personal data across Europe; the…
This cheat sheet covers the essential Kali Linux commands every pentester and ethical hacker uses…
When I first started learning malware analysis and reverse engineering, I thought the hardest part…
Both git fetch and git pull talk to a remote repository, but they do very different things to your…