I haven't taken a look at the malware, but it seems to download files from the Internet so it should have warned you to allow/deny the outbound connections.
It'd be nice to test it with a sample of aur package/malware.
It'd be nice to test it with a sample of aur package/malware.
PS. Regarding downloading files from internet, every self-update tool does that nowadays, it becomes more common because of apple/others stores policies. I created a few remote control tools and it is very very difficult to caught them, and I am not even a professional malware researcher. Things they do is beyond understanding of average superuser