OSX/Eleanor is a persistent malware backdoor that poses as a legitimate EasyDoc converter app made available for download from the MacUpdater site [1], allowing for complete third party command and control of the victim operating system [2].

References:

1. https://blog.malwarebytes.com/cybercrime/2016/07/new-mac-backdoor-malware-eleanor/
2. https://labs.bitdefender.com/2016/07/new-mac-backdoor-nukes-os-x-systems/