Researchers at Trend Micro recently discovered a backdoor targeting MacOS users that they believe is the work of the OceanLotus threat group, an organization previously thought to have launched targeted attacks against human rights organizations, media organizations, research institutes, and maritime construction firms.
Mark Nunnikhoven is VP of Cloud Research at Trend Micro, and he explains what they've learned. 
https://blog.trendmicro.com/trendlabs-security-intelligence/new-macos-backdoor-linked-to-oceanlotus-found/