I have already found \"SSH to Vagrant box in Windows\" and added the git bin directory to my windows PATH. I verified that it worked by starting CMD and typing ssh
Call me crazy but what about doing this:
command /drives/c/HashiCorp/Vagrant/bin/vagrant ssh-config > vagrant-ssh-config && ssh -A -F vagrant-ssh-config default
Vagrant VM needs to be up for MobaXterm Bash entry for the VM to work. I just setup two Bash shell settings for two Vagrant Virtualbox VMs I created and it seems to work just fine.
Updated: I went a little further since I've figured this out .. at least for me I did :). I added additional CMD shell sessions MobaXterm for each of my Vagrant VM. These additional CMD shell sessions do Vagrant halt, up, and restart (combo of halt and up) commands against the VMs they are specific to. This is what restart looks like:
vagrant halt
vagrant up
set /p value="Press Enter to continue"
exit
The Startup Directory for the above session is, again, the directory where the Vagrantfile lives for this VM. Oh, and make sure that "Use Windows PATH" is checked in Terminal Settings.