WannaSmile is a simple program which can disable SMB, edit your host file and more to temporarily block the WannaCry Ransomware.
It can do the following:
It will disable SMB in your system ( which is enabled by default )
Edit your host file and add google's IP to the 'kill-switch' ( which means even if the site goes down you won't be affected )
Create a lightweight local web server and add localhost to 'Kill-switch'
Use the OnlineFix if you are always connected to the internet
Use the OfflineFix if you're not connected to the internet.
This is an installer with no GUI or options, just set it and forget it.
Windows Vista, 7, 8, and 10 users should be patched. Check your windows updates. As long as the last check was done between late March and now, you're fine. Otherwise, download the latest Microsoft WannaCrypt Hotfix Patch.