Backdoor.OSX.a is the OS X variant of a backdoor trojan which is capable of infecting all major operating systems. The OS X version can steal different types of information off of a users infected machine. The malware can also scan the infected machine for Office documents and audio and screen shots. The latest OS X-based malware, Mokes.a, isnt the first OS X trojan to infect Macs, but it proves that attackers are targeting Macs.”]
Source: https://grahamcluley.com/holy-mokes-users-warned-sophisticated-backdoor-malware/