Sophos

W32/Sdbot-KW

Aliases
  • Backdoor.SdBot.gen
Category
Type
What to do
Prevalence low high

Summary

 
Protection available since 30 July 2004 08:53:40 (GMT)
Last updated 24 August 2004 14:09:40 (GMT)
Detected by All Sophos products
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Action

Please follow the instructions for removing worms.

Change any data that may have become compromised.

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.

More Information

W32/Sdbot-KW 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-KW spreads to network shares with weak passwords as a result of the backdoor Trojan element receiving the appropriate command from a remote user.

W32/Sdbot-KW copies itself to the Windows System folder as IEXPLORE.EXE and creates entries in the registry at the following locations to run itself on system startup:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Configuration Loader = IEXPLORE.EXE

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
Configuration Loader = IEXPLORE.EXE

HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
Configuration Loader = IEXPLORE.EXE

W32/Sdbot-KW can delete shared network drives and collect CD keys from several popular computer games and applications.

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