No worries. The scammer will come back, most likely with a new account and a new idea for how to steal your money.

As someone has already stated, this has to be one of the oldest scams in the book. I just hope no one is so naive and no one gets suckered by this, but it does happen. Hopefully people can make more educated choices when presented with scam offers such as this.
Without a doubt they will comeback but if we are lucky no one is going to fall for such obvious scam, after all there is literally zero effort involved, they are literally just asking for you to hand your account, personal details, bank information and balance for them to do whatever they want.
If that is not a horrible deal anyone can see through then we are in deep trouble as any scam more complex than that is going to be enough for scammers to get a lot of money from their unsuspecting victims.