Re: system.exe in pendrive
http://www.trendmicro.com/vinfo/viru...t=system%2Eexe
List of virii using files called system.exe.
If it is a virus and it keeps adding itself, there is probably a process running you need to shut down and take care of.
Have a look if there's anything in your autostart folder or in your registry, under startup, that looks suspicious.
Trend micro has a standalone scanner and removal tool, System Cleaner, you could try getting, it should catch anything in that list.
Re: system.exe in pendrive
thank you very much its very useful information