Details about adding exclusions in Unmanaged Detector - Name of the file

We know that the MAC Address Exclusions can only be added one at a time and we cannot import a file containing the list of MAC Addresses. What is the name of the file in which details of the Exclusions are saved. If the name of this file and the location identified then we can edit the same and directly add the Exclusion instead of going through the SEPM Interface. Please help in finding this file cause this will surely help many people till Symantec create an option to import file containing exclusion of MAC Address.