Written in Delphi

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dropped files:
c:\WINDOWS\winsys32.exe
size: 377,251 bytes 

port: 3743 TCP

startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "systemdll.dll"
data: winsys32.exe 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices "(Default)"
data: winsys32.exe 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices "systemdll.dll"
data: winsys32.exe 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "Shell"
old data: Explorer.exe 
new data: Explorer.exe winsys32.exe 

HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows "run"
data: winsys32.exe 



tested on Windows XP
January 06, 2006