Sophos

W32/Sdbot-BPZ

Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Network shares
Affected operating systems Windows
Characteristics
  • Drops more malware
Included in our products from July 2005 (3.95)
Protection available since 19 May 2005 05:53:26 (GMT)
Detected by All Sophos products

Action

More Information

W32/Sdbot-BPZ is a network worm with backdoor Trojan functionality for the Windows platform.

When first run, W32/Sdbot-BPZ copies itself to the Windows folder as winsmc.exe and creates the following registry entry in order to run each time a user logs on:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
WinScMngr
"<Windows folder>\winsmc.exe"

The worm spreads through network shares protected by weak passwords, MS-SQL servers and through various operating system vulnerabilities.

W32/Sdbot-BPZ also drops a file as rdriv.sys. Sophos's anti-virus products detect rdriv.sys as Troj/Rootkit-W.

W32/Sdbot-BPZ connects to a predetermined IRC channel and awaits further commands from remote users. The backdoor component of W32/Sdbot-BPZ can be instructed to perform the following functions:

scan networks for vulnerabilities
download/execute arbitrary files
start an ftp server

Patches for the vulnerabilities exploited by W32/Sdbot-BPZ can be obtained from Microsoft at:

http://www.microsoft.com/technet/security/bulletin/MS02-039.mspx
http://www.microsoft.com/technet/security/bulletin/MS04-011.mspx
http://www.microsoft.com/technet/security/bulletin/MS04-012.mspx

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