Written in Visual Basic

dropped files:
c:\WINDOWS\comcfg.exe    size: 98.304 bytes 
c:\WINDOWS\SYSTEM.EXE    size: 98.304 bytes 

port: 7143 TCP

startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "Shell"
old data: Explorer.exe 
new data: Explorer.exe SYSTEM.EXE