this are important windows system files to resolve hostnames. If you install a tool which allowed to change that files, you are not far away from “installing a virus”.
And as in former post mentioned you had former google-maps add-on installed and these add two entries in hosts file and this cause issues. So far I know the older versions of these add-on had also no un-installer and for newer versions not all users use the un-installer and so the isssue persist also after manuall removal of these add-on. ( note, lmhosts should not affected )