(P.S. Be not afraid, there is none)There seems to be a trojan, would not recommend downloading.
I assure you it's not. Currently, there's an issue with a Windows false positive with NW.js and Electron applications. (NW.js is the container that Astra Defender uses.)
You can read more about the issue here: https://github.com/nwjs/nw.js/issues/8090
I am actively looking for ways around this issue in future updates.