Iran’s nuclear facilities have suffered a cyber attack that shut down computers and played music from the rock band AC/DC, the F-Secure Security Labs website said.

A new worm targeted Iran’s nuclear program, closing down the “automation network” at the Natanz and Fordo facilities, the Internet security site reported, citing an e-mail it said was sent by a scientist inside Iran’s Atomic Energy Organization.

The virus also prompted several of the computers on site to play the song “Thunderstruck” by AC/DC at full volume in the middle of the night, according to the e-mail, part of which is published in English on the website.

F-Secure Security Labs, which is linked to F-Secure Oyj (FSC1V), the Finnish maker of security and cloud software, said that while it was unable to verify the details of the attack described, it had confirmed that the scientist who reported them was sending and receiving the e-mails from within Iran’s Atomic Energy Organization.

Iran’s nuclear program and oil facilities have been subject to a succession of cyber attacks that the Foreign Ministry said in May were launched by hostile governments as part of a broader “soft war.” Iran accuses the U.S. and Israel of trying to sabotage its technological progress. Both countries say Iran’s nuclear activities may have military intent, an allegation that Iran denies.