A simple test to check the behavior of WannaCry's Kill Switch functionality

WannaCryTest.cpp

/*
    A simple test to check the behavior of WannaCry's Kill Switch
    functionality. Compile with Visual Studio.
    @brad_anton
    
    Example Run:
    Set DNS to 208.67.222.222
    
    C:\Users\user\Desktop\WannaCryTest\Debug>WannaCryTest.exe
    GOOD: WannaCry would have been aborted!
    
    Add hosts file (C:\Windows\System\drivers\etc\hosts) entry:
    127.0.0.1 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com
    
    C:\Users\user\Desktop\WannaCryTest\Debug>WannaCryTest.exe
    NOT GOOD: WannaCry would have executed and further infected!!!
*/

#include "stdafx.h"
#include <Windows.h>
#include <wininet.h>
#pragma comment(lib, "wininet.lib")


void main()
{
	HANDLE hInt;
	HANDLE hUrl;

	hInt = InternetOpen(NULL, INTERNET_OPEN_TYPE_DIRECT,
		NULL, NULL, 0);

	hUrl = InternetOpenUrl(hInt, L"http://www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com", NULL, 0, INTERNET_FLAG_RELOAD | INTERNET_FLAG_NO_CACHE_WRITE, NULL);
	if (hUrl)
	{
    printf("GOOD: WannaCry would have been aborted!");
		InternetCloseHandle(hUrl);
	}
	else {
		printf("NOT GOOD: WannaCry would have executed and further infected!!!");

	}
	InternetCloseHandle(hInt);
}

WannaCryTest.exe

wannacrytest_samplerun.png