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

The worm copies itself to a file named pr1nc.exe in the Windows system folder and creates the following registry entries:

HKCU\Software\Microsoft\OLE
Microsoft Svchost local services
%system%\pr1nc.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Microsoft Svchost local services
%system%\pr1nc.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Microsoft Svchost local services
%system%\pr1nc.exe

W32/Rbot-GWW spreads to other network computers by Software vulnerabilities: RealVNC (CVE-2006-2369) and by copying itself to network shares protected by weak passwords.

More information can be found at this Sophos page.