That was an old scan so I refreshed it, but it still came out the same.
vmnat.exe is an executable file that is part of the VMware Workstation software. It stands for VMware Network Address Translation (NAT) service.
First I don't use VMware so I'm not familiar with it.
Looking at some of your screenshots, the URLs that vmnat.exe is connecting seem strange.
Though given that it is the VMware Network Address Translation (NAT) service and you were running a VM that would handle the connections (yes). However it wouldn't just be accessing random sites, are the sites avast is alerting on ones you were trying to connect to (or would they be related to the VM, which I think unlikely) ?