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W32/Vanebot-AX

Aliases
  • Backdoor.Win32.IRCBot.wd
  • W32_IRCB.bdr
  • Win32/IRCBot.UE
  • BKDR_IRCBOT.ACD
Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Network shares
  • Chat programs
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 18 June 2007 19:19:04 (GMT)
Detected by All Sophos products
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Action

More Information

W32/Vanebot-AX is a worm with IRC backdoor functionality for the Windows platform.

W32/Vanebot-AX spreads
 - to MSSQL servers protected by weak passwords
 - to network shares
 - via MSN Messenger
 - via Yahoo Instant Messenger

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

When first run W32/Vanebot-AX copies itself to <System>\dllcache\Rtsecar.exe.

The file Rtsecar.exe is registered as a new system driver service named "Microsoft Media", with a display name of "Microsoft Media" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\Microsoft Media

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