Can Trojan virus be fake?

Could it be possible that a Trojan virus is not what it appears to be? I'm curious to know if there are instances where a Trojan virus is actually a hoax or a fake, designed to deceive or mislead users? It's important to understand the authenticity of such threats in the realm of cybersecurity, especially when dealing with sensitive information and assets like cryptocurrencies and financial data. Are there any telltale signs or indicators that can help us distinguish between a genuine Trojan virus and a fake one?