Recently I played with one of the Windows 7 32Bit IE Developer VMs (IE11.Win7.VirtualBox.zip) from here. I can remember two exploitation classes where these machines are being used.
I found an SSH server installed within the machine, it is not hidden or something, but on the other side no one I asked was aware about it.
As you can see the server is running on port 22:
The SSH server itself is running with its own user:
The SSH service is not blocked by local firewall rules:
Short reminder, the password is “Passw0rd!”. So better use these machines in NAT mode, change the password, adjust firewall etc..