This sound comes from Among Us, the social deduction game by InnerSloth. The victory screen audio became widely reused in short memes and gaming edits as the game exploded in popularity in 2020. Online, creators use it as a quick audio shortcut for deception, backstabbing and the bad guy winning. It still shows up in compilations and reaction edits because even a few seconds of the cue instantly communicates an Impostor-style reveal to viewers familiar with the game.