Undetected + Hidden Meterpreter Shell under 10 seconds in USB Rubber Ducky Posted February 8, 2017 5 hours ago, kbeflo said: Any workarounds on initial run of powershell taking up so much time to open the uac dialog? Either choosing longer payload execution time or plugging in twice. So for this script I have the DELAY numbers quite high. it all depends on the computer specs, like how fast it is able to start up powershell, enter the commands, etc. Try lowering the DELAY numbers by half. It improves the speed greatly! Just test the script with different DELAYs and see how fast you can get your computer (or victims) computer to run the commands. Try putting 250 for the first four DELAYs. That should run it a lot quicker!