Batch Files :The Art Of Creating Viruses

I could just you give the  codes to paste  in notepad and  ask you to save files with extension .bat and   your deadly batch viruses would be ready. But instead of that, I have focussed on making the basics of batch files clear and developing the approach to code your own viruses.

What are Batch Files ?

Lets begin with a simple example , Open your command prompt and change your current directory to 'desktop' by typing 'cd desktop' without quotes.

Now type these commands one by one

1. md x  //makes directory 'x' on desktop

2. cd x  // changes current directory to 'x'

3. md y // makes a directory 'y' in directory 'x' 

We first make a folder/directory 'x', then enter in folder  'x',then make a folder 'y' in folder 'x' . 

Now delete the folder 'x'.

Lets do the same thing in an other way. Copy these three commands in  notepad and save file as anything.bat  

Now just double click on this batch file and the same work would be done , You will get a folder 'x' on your desktop and folder 'y' in it. This means the three commands executed line by line when we ran the batch file 

So a batch file is simply a text containing series of commands which are executed automatically line by line when the batch file is run. 

What can batch viruses do ?

They can be used to delete the windows files,format data,steal information,irritate victim, consume CPU resources to affect performance,disable firewalls,open ports,modify or destroy registry and for many more purposes.

Now lets start with simple codes, Just copy the code to notepad and save it as anything.bat (I am anything you wish but extension must be bat and save it as 'all files' instead of text files).

Note: Type 'help' in command prompt to know about some basic commands and to know about using a particular command , type 'command_name /?' without quotes.