Over the past few months there has been a lot of research and press coverage on the Shamoon campaigns. These have been the attacks on Saudi Arabian companies where a destructive malware known as Disttrack was deployed. The malware, using stolen credentials, spreads throughout the targeted networks and then at a set date and time wipes the disks attached to the victim computers.

https://www.arbornetworks.com/blog/asert/greenbugs-dns-isms/