Sophos

W32/Sdbot-AAB

Aliases
  • Trojan.Win32.Crypt.d
Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Network shares
Affected operating systems Windows
Included in our products from August 2005 (3.96)
Protection available since 5 July 2005 12:50:46 (GMT)
Detected by All Sophos products

Action

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.

More Information

W32/Sdbot-AAB is a worm with backdoor Trojan functionality.

W32/Sdbot-AAB runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access to and control over the computer via IRC channels.

W32/Sdbot-AAB will attempt to spread to unprotected network shares.

When first run W32/Sdbot-AAB copies itself to <System>\winxp2.exe.

The following registry entries are created to run winxp2.exe on startup:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Jufualt
winxp2.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Jufualt
winxp2.exe

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