Many years ago, I learned about the Hosts file by using a program called "SpyBot". I no longer use this program due to a security suite I now have installed but in case you want to check it out, the link below will take you to the home page of it.
SpyBot home page link:
The link below will take you to another site that specializes in Hosts file issues and it's well worth looking at for the information alone. They also have some solutions to address redirects. Before posting this reply, I verified the site was still active/updated and learned a trick or two for some browser issues I have.
Blocking Unwanted Parasites with a Hosts File link:
Hope this helps you out with those *** ****** redirects .....