[megaloman]

Если только переименование, то:

Код:

@Echo Off
cls
	Set "BoxIn=Z:\Box_In"
	Set "Mask=^s[0-9][0-9][0-9][0-9][0-9]m[0-9][0-9][0-9][0-9][0-9][0-9]_.*\.zip\.sigm$"
	Set "L0=13"
	Set "L1=0,6"
	Set "L2=6,7"
 
	For /F "usebackq delims=" %%f In (`2^>nul Dir "%BoxIn%\*.*" /B /A:-D ^|FindStr /R /I /C:"%Mask%"`) Do (
		Set "Name=%%f"
		Call Ren "%BoxIn%\%%f" %%Name:~%L2%%%%%Name:~%L1%%%%%Name:~%L0%%%"
	)
pause
Exit /B