W32/Sdbot-MS

Please follow the instructions for removing worms.

Check your administrator passwords and review network security.

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\
reggsdg = spoolserv.exe

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
reggsdg = spoolserv.exe

and delete them if they exist.

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\reggsdg = spoolserv.exe

and delete it if it exists.

Close the registry editor and reboot your computer.

W32/Sdbot-MS is an IRC backdoor Trojan and network worm.

W32/Sdbot-MS copies itself to network shares protected by weak passwords.

When first run W32/Sdbot-MS copies itself to the Windows system folder as spoolserv.exe and creates the following registry entries to ensure it is run at system logon:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
reggsdg = spoolserv.exe

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
reggsdg = spoolserv.exe

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
reggsdg = spoolserv.exe

Each time W32/Sdbot-MS is run it attempts to connect to a remote IRC server
and join a specific channel. The worm then runs in the background allowing a remote intruder to issue commands which control the computer via IRC channels.