Sophos

W32/Sdbot-JZ

Aliases
  • Backdoor.IRC.Bot
Category
Type
What to do
Prevalence low high

Summary

 
Protection available since 5 May 2004 14:01:07 (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.

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\
Spooler SubSystem App

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
Spooler SubSystem App

and delete them if they exist.

Close the registry editor.

More Information

W32/Sdbot-JZ 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-JZ copies itself to the Windows system folder as spoolv.exe and
creates entries in the registry at the following locations to run itself on system startup:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Spooler SubSystem App

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
Spooler SubSystem App

W32/Sdbot-JZ 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-JZ may attempt to terminate certain processes.

W32/Sdbot-JZ may also attempt to log user keystrokes and Window text to a file.

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