Neumichtis (genus) ie. N. callisina? Known to be a high country species, see Moths of Victoria, Part 9. N.callisina was collected at Daners Gap Kosciuski NP in 2009 by ED Edwards and Marriott 2009, ie. at similar altitude.
I thought the trailing edge of the forewing looked much like N. callisina, and there is a clear white dot on the costa with a black dot fore and aft like in the N, callisina type specimen, but I admit they are quite similar. This moth seems lighter in colour, perhaps N. sepultrix is a darker moth? Moths of Victoria said no records of N. sepultrix were from Victoria, all from Tasmania., although they said there might be high country examples found so they included it.