This new malware is called Backdoor.MAC.Elanor and as Bitdefender points out, it is installed on the computer due to unchecked app installations by Apple.
One of the main applications through which it has been distributed is EasyDoc, a supposed file converter that never really works . EasyDoc can be downloaded from several different Mac download app portals, so if you have ever installed it, consider getting rid of it.
According to Bitdefender:
Malware can only be installed by applications that have not been verified by Apple for the time being. This means that it can only enter via applications from unidentified developers. This is what you have to do to avoid it:
You can only install for now using applications that have not been verified by Apple
- Go to System Preferences
- Opens the Security and Privacy option
- On the General tab, go to the section “Allow installations of:”
- Choose App Store or App Store and identified developers
With this you ensure that malware never enters your computer , but make sure you never run an app without knowing where it comes from.