[Foreigner]

Попробуйте так:

Код:

@echo off
setlocal

1>nul chcp 437
whoami /groups | 1>nul findstr "S-1-5-32-544.*owner$" && set "isadmin=1"
1>nul chcp 866

if defined isadmin (goto:next) else (echo CMD not elevated & goto:eof)

:next
echo CMD is elevated