It appears that Nyetaya may just be a different name for Petya, notPetya, Petrwrap or GoldenEye:
Posted on 6/28/17
"Today a new malware variant has surfaced that is distinct enough from Petya that people have referred to it by various names such as Petrwrap and GoldenEye. Talos is identifying this new malware variant as Nyetya."
So the EXTRA.DAT that mcafee release is applicable to Nyetya also since it is the same as Petya
It does seem that way, there were a lot of labels/names that were given to the last ransomware.