Malware
Defray
aka Glushkov
Defray is ransomware that appeared in 2017, and is targeted ransomware, mainly on the healthcare vertical.
Defray, also known as Glushkov, is a Windows malware family.
Background
Defray is a targeted ransomware that surfaced in 2017, focusing primarily on the healthcare vertical.
Its distribution shows several distinctive traits. According to Proofpoint, Defray is delivered through Microsoft Word document attachments in email, with each campaign consisting of only a handful of messages. The lures are tailored to appeal to the specific pool of intended victims, and recipients are either individuals or distribution lists such as group@ and websupport@. Geographically the campaigns target the UK and US, while vertical targeting is narrow and selective and varies from one campaign to the next.
Source: Malpedia (Fraunhofer FKIE).