TL;DR: Quirrell taught the first years the Curse of the Bogies during Philosopher's Stone. (See Edit)
Well, and this is not very sinister, Lupin specifically taught Waddiwasi to the third years during DADA in Prisoner of Azkaban:
‘This is a useful little spell,’ [Lupin] told the class over his shoulder. ‘Please watch closely.’
He raised the wand to shoulder height, said ‘Waddiwasi!’ and pointed it at Peeves.
With the force of a bullet, the wad of chewing gum shot out of the keyhole and straight down Peeves’s left nostril; he whirled right way up and zoomed away, cursing.
Prisoner of Azkaban - page 100 - Bloomsbury - chapter 7, The Boggart in the Wardrobe
Technically Peeves is not a creature. He's a poltergeist, which means "noisy ghost" in German. Ghosts are classified as "spirits" in Fantastic Beasts and Where to Find Them:
An exception was made for the ghosts, who asserted that it was insensitive to class them
as “beings” when they were so clearly “has-beens.” [Grogan] Stump therefore created the three divisions of the Department for the Regulation and Control of Magical Creatures that
exist today: the Beast Division, the Being Division, and the Spirit Division.
Fantastic Beasts and Where to Find Them - page xii - Scholastic - Introduction
I know Snape covered werewolves and how to tell the difference between a ghost and an Inferi the day he took over class for Lupin, who was still transformed. I don't believe spells were involved. There doesn't seem to be any practical application of DADA in Philosopher's Stone or Chamber of Secrets. (See Edit)
Edited to Add: While reading up on the question about Filch and Mrs Norris, I stumbled upon an example of Quirrell having shown the first years a curse in Philosopher's Stone.
Ron looked at his watch and then glared furiously at Hermione and Neville.
‘If either of you get us caught, I’ll never rest until I’ve learnt that Curse of the Bogies Quirrell told us about and used it on you.’
Hermione opened her mouth, perhaps to tell Ron exactly how to use the Curse of the Bogies, but Harry hissed at her to be quiet and beckoned them all forward.
Philosopher's Stone - pages 117-118 - Bloomsbury - chapter 9, The Midnight Duel
Probably on par with Waddiwasi, but it's a canon reference and does not have to do with creatures.