@nornironlegend This all depends on your host. If you are having this same issue with this file, you may want to contact them for advice.
I have a feeling @missalice has a similar server setup as mine. On my server, for security reasons, I can’t have certain files set as 777. So, there is literally nothing on my server or in my WordPress installation that has permissions 777. All directories are 755 and files are 644. This is actually what WordPress sets up by default (I believe) when you’re working with files through your WP admin (i.e. plugin updates, core updates, installing themes, etc).