Malware
SamSam
aka Samas
According to PCrisk, Samsam is high-risk ransomware designed to infect unpatched servers and encrypt files stored on computers networked to the infected server.
SamSam, also known as Samas, is a Windows malware family operated by Boss Spider.
Background
PCrisk rates Samsam as high-risk ransomware that compromises servers left unpatched and then encrypts files on machines connected to the breached server's network.
Source: Malpedia (Fraunhofer FKIE).