Netsys 7.2
(Backdoor.Win32.Delf.oj)

by Zhou Jian

Written in Delphi

Released in August 2005

Made in China

more versions


Server:
dropped file:
c:\WINNT\system32\ZRundlll.exe
size: 497,261 bytes 

port: 4778 TCP

added to registry:
HKEY_CURRENT_USER\Software\Microsoft\ActiveMovie
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\WinOldApp
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\MediaResources\msvideo
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\ZRundlll
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\MediaResources\msvideo
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ZRundlll
 
tested on win2000
August 27, 2005

MegaSecurity