Altcoin Wallet Warning: Virus Alert Coinstealer in it! Why?

I have compiled this Altcoin completetly from Source:

After i got a Compiled .exe File I uploaded it to Virustotal. The Result was nothing, Clean Wallet 🙂

Some days later i checked again the same file and got this:


Why does it shows Coinstealer now? The Source Code is based on Bitcoin and is visible on Github, where should this Files be in Source what are infected an includes “Coinstealer”?

Thanks in advance.

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