StegoMft

Just realized that the technique was presented at blackhat back in 2006 along with FragFS; http//www.blackhat.com/presentations/bh-federal-06/BH-Fed-06-Thompson/BH-Fed-06-Thompson-up.pdf

Never tried the tool though. And from googling I don't think the source was ever released either.. From the doc it seems to share some similarity in the logic, however that implemetation sounds to be slightly different.