This was posted on the list before (not so long ago).
Defender probably simply just doesn't like that it's an unsigned (and unknown) executable (Vigorf.A is a very generic threat). Malwarebytes and DrWeb say it's clean (the ones I would trust). It is a shame that Kaspersky is no longer listed on VT for obviously political reasons.
"If something cannot go on forever, it will stop" - Herbert Stein