Sophos

W32/Esbot-B

Aliases
  • Backdoor.Win32.IRCBot.es
  • W32/IRCbot.worm.gen
  • Backdoor.Trojan
Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Network shares
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from December 2005 (4.00)
Protection available since 3 November 2005 10:53:29 (GMT)
Detected by All Sophos products

Action

More Information

W32/Esbot-B is a network worm and IRC backdoor Trojan for the Windows platform.

W32/Esbot-B will connect to an IRC channel and wait for instructions. W32/Esbot-B is a network worm and IRC backdoor Trojan for the Windows platform.

W32/Esbot-B will connect to an IRC channel and wait for instructions.

When first run W32/Esbot-B copies itself to <Windows>\services32.exe.

The file services32.exe is registered as a new system driver service named "Content List Management Sub System", with a display name of "services32" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\Content List Management Sub System\

The following registry entry is set:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions
Melt
<pathname of the Trojan executable>

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