Dark Feed (2013)
Dark Feed is a 2013 horror film directed by Shawn and Michael Rasmussen. The movie was first released on March 18, 2013 and centers upon a group of filmmakers that decide to cut costs by filming in an abandoned psychiatric hospital, only to end up slowly turning insane. Filming took place in New England and utilized some of the buildings seen in Shutter Island. The Rasmussens came up with the idea for Dark Feed while visiting the set of another film, Long Distance, which was filming in an abandoned psychiatric hospital.
More at Wikipedia.