As mentioned in the comments, I believe you are looking for I Became the Strongest With The Failure Frame also known as Hazure Waku no Joutai Ijou Skill de Saikyou ni Natta Ore ga Subete wo Juurin Suru made
The manga starts out with a goddess addressing the class she just summoned and informs them that the main character is to be disposed of because he has the lowest aptitude and will bring down all the others. A single student tries to stand up for him, but the goddess then knocks her out claiming his mere presences is already leading one of the highest aptitude members astray. The rest of the class then insults and isolates him. He is then teleported into a dungeon where he finds out his skills are poison, paralysis, and sleep. He manages to paralyze the monster that initially attacks him, and then uses it to determine the limits of his abilities until it dies.
So while that entire description is just the first chapter, I feel that covers all the details from your question.