Safe Finder Virus

Hi there, having trouble removing the Safe Finder virus from my mac. Its hijacked my browser (Chrome) and no matter what I've tried, I cannot stop it from redirecting everytime I open a window or tab. I can't tell what it's doing in the background so I'm pretty worried.

So far I've tried:

1. Deleting all associated files and emptying trash folder

2. Changing my set pages back to google (safefinder wasnt even on the list)

3. Looking for an extension to delete (again not listed)

4. Resetting Chrome settings

5. Looking for safefinder in bookmarks (not there)

6. Blocking safefinderformac.com and other variations

7. Running Malwarebytes and Avast anti virus software multiple times and deleting anything found and quarantined

8. Going through finder to look in Library files

...possibly more, it seems like I've tried every single suggestion I've found online and I'm pretty desperate to resolve this. At this point I dont even know how its possible for it still be getting through. Any advice would be massively appreciated!

Note: if it helps to know I'm using Sierra OS