Adobe Systems has issued an emergency security update for its Adobe Flash Player. This applies to Windows, Mac, Linux, and Chrome operating systems.
Symantec has identified the downloaded filenames as flash_player_updater.exe or update_flash_player.exe. (Downloader.Ponik). The virus is classified as Trojan.Ransomlock.Q if the fake update is downloaded and installed.
Users should only install Flash updates from https://get.adobe.com/flashplayer/
More information is at: