When both hands in Mrigashirsha hasta and the right palm is placed over the left palm, we get the Varaha hasta.
Lets take a look at the viniyoga shloka of this gesture.
Etasya Viniyogaha Syadvarahartha pradarshane
It means that this hasta is used to denote a Boar or a wild pig. The Varaha avatara of lord Vishnu is depicted by this gesture.