It is old scam, and it was detected at the end of last year. If you look history of this board for last 7 months, probably there are dozens of threads identical as this one. They all have same thing in common, users download fake version of Electrum via official Electrum app pop-up window and after install of such file they lost coins. In your case AV is stop download, which is only show us that most users who download this fake wallet do not have any protection for their devices.

theymos is post about this vulnerability on 27 December 2018 in Important Announcements.

https://bitcointalk.org/index.php?topic=5090097.0