i think this Taxeotis sp. at least, but I may mistaken. Seems to match images posted on the ALA for T. reserata under the Taxeotis g. by D. Hobern there for the ACT, however Taxeotis is variable and can be difficult to ID. The T. reserata image posted on Lepidoptera Butterfly House (again takenby D. Hobern at Aranda) is quite a dark specimen. (Inexplicably though, there does not seem to be a dedicated page for T. reserata on the ALA as there is for other Taxeotis spp.)
3382101 and 3384055 come close to Taxeotis intermixtaria, although I can't be certain. ANIC has only a dozen or so specimens, all from Ebor (N NSW) and Gisborne (Vic), but ACT fits credibly in between. The species is included in Moths of Victoria. (Nearcha nullata was the next best prospect.)