Just so you know to do this means first to compare what files belong on your site and delete the ones that don't.
Then compare the file contents to what it should be. And replace those files.
Third would be change your dbase user name and password.
Four would be to change admin or users with cp access, login info.
Five would be to delete un-needed users access from the control panel.
It is not a pretty picture.
But that is what happens when you lapse in updates.
Since even though we have not had much for feature updates. The last several updates have mostly been security updates.
