The "cable" has WiFi, so it's probably possible to set up a hidden WiFi network around the premises of the target and have the implant connect with that. With the right type of antenna you can set up a WiFi connection to a specific device from quite a way away. Then tunnel the connection from your malicious AP and emulate ethernet on the USB side of the implant.
Or, search for open/guest networks and use those as an uplink. There's plenty of possibilities for this to work as a malicious network adaptor.
However, I think the network example is just a proof of concept and the remote connectivity is much more interesting to any real attacker.
