You were walking down to Hagrid’s before noticing Draco, and his two friends… With Hermione, Ron, and Harry. Out of curiosity, you hide behind a wall to try and even drop on their conversation

Hermione: “You… You foul evil loathsome looking cockroach!”

Hermione pointed her wand at him in fury, as Ron says

Ron: “Hermione no! He’s not worth our time…”