An FTP server that runs at port 666. When you connect to it, it will look something like:
220-Serv-U FTP-Server v2.1 for WinSock ready...
220-
220-----------------------------------------
220-Soft Créer le 14/04/98 - Version 2.0
220-----------------------------------------
220-
220-Installer le : 3/17/00 A : 3:07:03 PM
220-Dossier Windows : C:\WINDOW
220-Dossier System : C:\WINDOW\SYSTEM
220 Lettre du CD-ROM : F:\
It only accepts anonymous login. Removal
Run wscan.exe Louis_Cypher. Also delete the regsitry entry associated with it.