the virus/spyware naming new folder.exe,but its real source file name is mahsa.exe, its 104KB in space n as u try 2 delete it it comes again n again,the thing is the original file that transmits the orders to that location to creat simultaneously same file is in ur documents n settings...n it wont get delete, it will give error of some kinda access denied,no antivirus naming AVG free tackles it cuz its u can say brandnew approach,so what u have to do is simply reboot ur PC n get it to the safe mode(by pressing F8 in the start screen)...then wait abit..as the OS starts open the administrator account ( its easy just type administrator n enter if u havnt given any password then)...now 1st of all go to the folder options in the mycomputer/tools n check the option naming show hidden stuff n also check the system files show option...now come to the main screen,cntrl+alt+del...once...here u wil get the task manager bar,in it click the processes, there will be a file that will be running (which is the virus source file) in my case it was dump file u can check ur side(its easy cuz all u have to do is try 2 check that which process is abit suspicious...uncheck it...now come 2 main screen....
from start click run,,,over here type msconfig...in it go to the startup options,overhere u mst be very active, search the same file name over here(dump in my case) n uncheck it...
half work done...go to documents n setting where there is the main source file of new folder is copied (which dont delete) delete them now they will vanish...now go to search through start menu...in the files n folder option click the advance options n over there check the options having the search option of all the systrem files hidden files etc etc...each n every option of it...now type new folder in the search bar n search...all the files naming new folder will be in front of u,
delete all the files naming new folder which have the 104KB size, delete all of them, n search again n again twice thrice...maek sure nothing be there, there was another file naming top pictures in my PC,,, its also 104KB file, try 2 search 4 it too n delete it...there u go pal...jobs done...just simple restart n u got ur PC back
hope u will reply back if it worked