Trojan:Win32/Vundo.RU injects its entire code into all processes (except for browser processes) so that it has a persistent presence in your PC.
Trojan:Win32/Vundo.RU collects information about your PC and saves it into a file named cf in the Cookies folder. It collects the following information:
•Operating system version
•Operating system architecture (whether your PC is 32-bit or 64-bit)
•Whether your PC is running in a virtual or a physical environment