W32/Sdbot-WB

Please follow the instructions for removing worms.

Windows NT/2000/XP/2003

In Windows NT/2000/XP/2003 you will also need to edit the following registry entries. The removal of these entries is optional in Windows 95/98/Me. 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 entry:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\

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-WB is a Windows worm that attempts to spread via network shares.

The worm contains backdoor functions that allows unauthorised remote access to the infected computer via IRC channels while running in the background.

When run the worm copies itself to the Windows system folder as hmisvc32.exe.

W32/Sdbot-WB creates the following registry entries so that it is able to run on computer logon:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
HMI PowerSystem
hmisvc32.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HMI PowerSystem
hmisvc32.exe

W32/Sdbot-WB also attempts to spread itself by copying to network shares as the filename hmisvc32.exe.

Once installed, W32/Sdbot-WB will attempt to download and run files from the internet when instructed to do so by a remote attacker.