MedStar, a non-profit group that runs 10 hospitals in the Baltimore and Washington area, was attacked with Samsam, also known as Samas and MSIL, last week. The operators of the ransomware offered a bulk deal: 45 Bitcoins (about US$18,500) for the decryption keys to unlock all the infected systems. But unlike other businesses or hospitals, MedStar did not pay the Ransom to entertain the hackers. The IT department of the MedStar Hospital was initially able to detect the intrusion in their servers.
Source: https://thehackernews.com/2016/04/hospital-ransomware.html