Written in Borland C++

Released in January 2002

Server:
dropped file:
c:\WINDOWS\SYSTEM\IOSystem.io 

size: 85.192 bytes

startup:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run "IO System Debug" 

added:
HKEY_CLASSES_ROOT\.io "(Default)" 
Type: REG_SZ 
Data: exefile