Written in C, compressed with UPX

more versions

dropped file:
c:\WINDOWS\system32\ws2_32s.exe
size: 9,760 bytes 

startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "Microsoft Winsock Wrapper"
data: C:\WINDOWS\System32\ws2_32s.exe 



tested on Windows XP
May 01, 2005