Excuse me, but I need to clarify something. You've mentioned receiving money as a scammer. Firstly, let me remind you that engaging in fraudulent activities is not only unethical but also illegal in most jurisdictions.
Now, to answer your question, keeping money obtained through deception or fraud is considered an illegal act, commonly referred to as money laundering. This means that not only is it unethical to keep such funds, but it also exposes you to legal consequences.
My advice would be to report the incident to the relevant authorities immediately and cooperate with them to ensure that justice is served. Remember, honesty and integrity are crucial values in the cryptocurrency and finance world, and engaging in unethical practices can have severe consequences for your reputation and future opportunities.