I've purchased more than one USB "WIFI" or "BT" or similar adapter from Aliexpress/Wish that will present as a USB hub of some sort, a ~64MB flash drive, and a USB HID that will try to rapidly run it or send keystrokes (I had one that would as soon as you plugged it in, open the Run window with Win+R and try to type in E:\setup.exe. Why E? No idea)