Avast! Picks it up for me as EICAR Test-NOT Virus!
Try saving the file as .bat lars.
Example:
:s
start %0
goto :s
If you save that in Notepad as *.bat the detection should be BV:Starter-X [Trj]
Don’t launch that file. As it will crash your computer. (Loads Infinite CMD’s until Retstart/Crash/Hard Reboot)