Apparently not yet, astronomers are still waiting for the signal to repeat to appropriately study it.

METI president Douglas Vakoch told Die Welt that any putative SETI signal detections must be replicated for confirmation, and the lack of such replication for the Wow! signal means it has little credibility.[3

For now there are just guesses. If such burst isn't a fluke and repeats, astronomers will get a chance to better study it and provide a confident explanation.