I would be willing to bet that the hive is queenless. It is swarm season and if that hive swarmed recently the OG queen is gone and the new queen potentially didn't survive. They could have a new queen with a new personality that is causing the change in temperament, but typically even an aggressive hive won't do what you are explaining if they have a queen. A queenless hive can very aggressive.
You may also put out some trail cameras, potentially that hive is being bothered by potential predators (racoons, skunks, bears, etc.) at night causing them to be aggressive as well.