Sophos

W32/Sdbot-AFU

Aliases
  • Backdoor.Win32.SdBot.aid
  • WORM_SDBOT.CPO
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 January 2006 (4.01)
Protection available since 28 November 2005 22:27:29 (GMT)
Detected by All Sophos products

Action

More Information

W32/Sdbot-AFU is a worm with backdoor functionality for the Windows platform.

W32/Sdbot-AFU 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.

W32/Sdbot-AFU spreads via network shares and by exploiting the ASN.1 (MS04-007) software vulnerability.

When first run W32/Sdbot-AFU copies itself to:

\eminem vs 2pac.scr
\funny pic.scr
\photo album.scr
<Windows system folder>\compaq.exe

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

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Compaq Service Drivers
compaq.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Compaq Service Drivers
compaq.exe

HKCU\Software\Microsoft\Windows\CurrentVersion\RunServices
Compaq Service Drivers
compaq.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Compaq Service Drivers
compaq.exe

Registry entries are set as follows:

HKCU\SYSTEM\CurrentControlSet\Control\Lsa
Compaq Service Drivers
compaq.exe

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
Compaq Service Drivers
compaq.exe

HKCU\Software\Microsoft\OLE
Compaq Service Drivers
compaq.exe

HKLM\SOFTWARE\Microsoft\Ole
Compaq Service Drivers
compaq.exe

Registry entries are created under:

HKCR\.key\

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