My yellow handbag has a black stain on it how do I remove it?

I moved recently and I put all my handbags together in a garbage bag, the handbags are all different and it seems that colour from a black bag had rubbed off onto my yellow handbag:( Ive tried scrubbing the bag with soap but its not even lifting ? Is there anything I can use to get it off without fading the colour of the bag? The material is like a fake leather! Thankyou so much