W32/Rbot-VX

Category: Viruses and Spyware
Type: Win32 worm
Prevalence: Small Number of Reports

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W32/Rbot-VX is a network worm with backdoor functionality for the Windows platform.

W32/Rbot-VX 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-VX can be controlled by a remote attacker over IRC channels. W32/Rbot-VX is a network worm with backdoor functionality for the Windows platform.

The worm copies itself to a file named crtl.exe in the Windows system folder and creates the following registry entries:

HKCU\Software\Microsoft\OLE\
Microsoft Control Center
crtl.exe

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft Control Center
crtl.exe

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
Microsoft Control Center
crtl.exe

W32/Rbot-VX 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-VX can be controlled by a remote attacker over IRC channels. The backdoor component of W32/Rbot-VX 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)
steal product registration information from certain software

Patches for the operating system vulnerabilities exploited by W32/Rbot-VX can be obtained from Microsoft at:

http://www.microsoft.com/technet/security/bulletin/ms04-012.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

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