W32/Sdbot-DIE

Please follow the instructions for removing worms.

W32/Sdbot-DIE is a worm with IRC backdoor functionality for the Windows platform.

W32/Sdbot-DIE runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.

W32/Sdbot-DIE includes functionality to access the internet and communicate with a remote server via HTTP.

When first run W32/Sdbot-DIE copies itself to <Windows>\windowsys.com and creates the file <System>\rdriv.sys.

The file rdriv.sys is detected as Mal/RootKit-A.

The file rdriv.sys is registered as a new system driver service named "rdriv", with a display name of "rdriv". Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\rdriv

The file windowsys.com is registered as a new system driver service named "windowsys", with a display name of "system32 master" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\windowsys

W32/Sdbot-DIE sets the following registry entries, disabling the automatic startup of other software:

HKLM\SYSTEM\CurrentControlSet\Services\Messenger
Start
4

HKLM\SYSTEM\CurrentControlSet\Services\RemoteRegistry
Start
4

HKLM\SYSTEM\CurrentControlSet\Services\TlntSvr
Start
4

Registry entries are set as follows:

HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile
EnableFirewall
0

HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile
EnableFirewall
0

HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
DoNotAllowXPSP2
1

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

Registry entries are created under:

HKLM\SOFTWARE\Microsoft\Security Center