W32/Sdbot-SE

Please follow the instructions for removing worms.

You will also need to edit the following registry entries, if they are present. Please read the warning about editing the registry.

At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.

Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.

Locate the HKEY_LOCAL_MACHINE entries:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices

and remove any reference to any file you deleted.

Each user has a registry area named HKEY_USERS\[code number indicating user]\. For each user locate the entry:

HKU\[code number]\Software\Microsoft\Windows\
CurrentVersion\Run\

and remove any reference to any file you deleted.

Close the registry editor.

W32/Sdbot-SE is a worm which attempts to spread to remote network shares. It also contains backdoor Trojan functionality, allowing unauthorised remote access to the infected computer via IRC channels while running in the background as a service process.

W32/Sdbot-SE copies itself to the Windows system folder as VASDD.EXE and creates entries in the registry at the following locations so as to run itself on computer startup:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
Chinagnq
vasdd.exe

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
Chinagnq
vasdd.exe

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Chinagnq
vasdd.exe

W32/Sdbot-SE spreads by copying Troj/Multidr-BD to remote network shares. Troj/Multidr-BD then creates copies of and runs W32/Sdbot-SE and Troj/Ranck-BK.