Here is a Simple batch program, has the tendency to replicate itself again
and again and keeps on creating a folder with same name, until a user stops it.
1. Open a notepad.
2.Type
cd\
cd C:\Documents and Settings\username\Desktop
:loop
md Virus
cd Virus
goto loop
2. Save as * .bat, before doing that you have to modify the code by
changing the place where it says ‘username’ and instead of that replace it by the currently logged in
username.
3. Then run it .
Note:
Deleting the root directory will purge all the clumsy thing done by this piece of code.