Equivalent to EFS (IMEI) partition on Moto G topic

Hi there, I have a MotoG and I'm just wondering which is the equivalent to Samsung EFS partition (where phone IMEI is store) in order to create a backup just in case because days ago a friend of mine lost their Samsung Galaxy S4 due to bad SO upgrade (some Wifi issues and voala phone hasn't IMEI and isn't recoverable) so where is the partition I should backup and which tool I can use to do this?