This article's content is accurate to the most recent public game version, 0.4.8d.
"Assassin bunnies attack 2 random enemies. Ignores enemy DEF."
Source: Catherine (starting skill)
Widerlicher DolchstoB is a bunny skill that only Catherine can use. Using it deals 2 bouts of moderate Sharp damage to two targets chosen at random.
Trivia
Widerlicher DolchstoB, like all of Catherine's moves, is made out of garbled German (the B should actually be an ß), which translates to Disgusting Dagger Thrust.