Written in C

Released in July 2004

more versions

Backdoor.Win32.Loony.l:

dropped file:
c:\WINNT\system32\MPL32.exe

size: 19.456 bytes 
 
startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "MPL32 Driver"
data: MPL32.exe 

tested on Win2000