[megaloman]

Код:

@Echo Off
	Set "FileIn=Z:\Box_In\0??_001.jpg"

	FOR %%f IN ("%FileIn%") DO (
		Set "Name=%%~nf"
		Call Set /A N=1%%Name:~0,3%%-1001
		Call Ren "%%f" "%%N%%%%~xf"
	)
Exit /B