I will give you a quick overview with details to come.
It looks like through nagios people are exploiting FreeBX.
They are running minerd and some other things to steal resources.
Running: 5.211.65-11
SHMZ release 6.4 (Final)
I believe nagios was just installed during one of the last couple of updates, not sure how it’s being utilized.
Figured a heads up would give direction until further details are available.