It will by a small amount. Not by much though lol... It is ransomware and most people probably have backups and won't pay it. I am thinking only really a few people were hit off guard and didn't have backups, so no increase by much if at all.
Ransomware is a free advertisement of bitcoin to the world. Most of the news are mentioning bitcoin since it is used as the only mode of payment. Bitcoin in my country is now on trend. Many people are now interested on it because of it's expensive value.
What you are telling is true, Bitcoin is getting free advertisement and now more peoples let it be legal or illegal but they are now taking interest in Bitcoin and other crypto currency. But this boom is no related to this advertisement. It is due to the global acceptance of the coin