Written in Visual Basic

Released in March 2006

more versions

Server
Dropped File:
c:\WINDOWS\system32\Yserver.exe
Size: 37,521 bytes 

Startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "Shell"
Old data: Explorer.exe 
New data: explorer.exe Yserver.exe 




Tested on Windows XP
June 12, 2008