dropped file:
c:\WINDOWS\svchost.exe
size: 55,784 bytes 

port: 7531 TCP

startup:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "MSkernel32"
data: C:\WINDOWS\svchost.exe 7531 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "MSkernel32"
data: C:\WINDOWS\svchost.exe 7531 

tested on Windows XP
February 09, 2006