Sophos

W32/Sdbot-RU

Aliases
  • Win32.IRCBot.a
  • W32/Sdbot.worm.gen
Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Network shares
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 3 December 2004 21:04:48 (GMT)
Detected by All Sophos products
  • Free virus, spyware, and adware scan
  • Test your existing anti-virus protection
  • Find threats your anti-virus missed

Action

Please follow the instructions for removing worms.

Change any data that may have become compromised.

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\
outlook
"outlook.exe"

and delete it if it exists.

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\
outlook
"outlook.exe"

and delete it if it exists.

Close the registry editor.

More Information

W32/Sdbot-RU is a network worm from the Sdbot family which attempts to spread to remote network shares protected by weak passwords and computers vulnerable to common exploits. W32/Sdbot-RU 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.

A remote attacker can use the backdoor to send commands to the Trojan. These commands include instructions to delete network shares, steal registration keys for computer games, redirect internet traffic, participate in DDoS attacks, scan other computers and spread to network shares. W32/Sdbot-RU is a network worm from the Sdbot family which attempts to spread to remote network shares protected by weak passwords and computers vulnerable to common exploits. W32/Sdbot-RU 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.

A remote attacker can use the backdoor to send commands to the Trojan. These commands include instructions to delete network shares, steal registration keys for computer games, redirect internet traffic, participate in DDoS attacks, scan other computers and spread to network shares.

W32/Sdbot-RU copies itself to the Windows system folder and creates the following registry entries to run itself automatically on log-on:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
outlook
"outlook.exe"

HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
outlook
"outlook.exe"

RSS|Atom
Get reports about the latest virus and spyware threats delivered to your computer