Go download Ubuntu cd live is not something as easy as it sounds however I didn't know malware could make this kind of changes on our computers, I have heard changing the bitcoin address automatically so if you copy paste an address it will be someone else instead of yours however I didn't know this "forced phishing" or whatever its called could be done.

Changing the host files to redirect you to some other website could be dangerous at the hands of wrong people (why would good people do it anyway), for all the gamblers out there if you are going to deposit money to any casino, if this is a real problem, please double check your website name and make sure it is not something wonky before you deposit. However, I think this is just a common regional issue and not a big thing.