Summary

Summary
Action
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| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| Included in our products from | May 2005 (3.93) |
| Protection available since | 5 April 2005 07:40:04 (GMT) |
| Detected by | All Sophos products |
Action

Summary
Action
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Please follow the instructions for removing worms.
More Information
W32/Rbot-ZW is a network worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-ZW spreads using a variety of techniques including exploiting weak passwords on computers and SQL servers, exploiting operating system vulnerabilities (including DCOM-RPC, LSASS, WebDAV and UPNP) and using backdoors opened by other worms or Trojans.
W32/Rbot-ZW can be controlled by a remote attacker over IRC channels. The backdoor component of W32/Rbot-ZW can be instructed by a remote user to perform the following functions:
start an FTP server
start a Proxy server
start a web server
take part in distributed denial of service (DDoS) attacks
log keypresses
capture screen/webcam images
packet sniffing
port scanning
download/execute arbitrary files
start a remote shell (RLOGIN)
The worm copies itself to a file named scmss.exe in the Windows system folder and creates the following registry entries:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run
Security Patch
scmss.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
Security Patch
scmss.exe
HKCU\Software\Microsoft\OLE
Security Patch
scmss.exe
Patches for the operating system vulnerabilities exploited by W32/Rbot-ZW can be obtained from Microsoft at:
http://www.microsoft.com/technet/security/bulletin/ms04-011.mspx
http://www.microsoft.com/technet/security/bulletin/ms03-039.mspx
http://www.microsoft.com/technet/security/bulletin/ms03-007.mspx
http://www.microsoft.com/technet/security/bulletin/ms01-059.mspx
