Because users were so accustomed to seeing "Critical Update Required" prompts, hackers began using the filename install_flash_player.exe as a "Trojan Horse" to deliver malware.
Since Adobe Flash Player is officially unsupported, any website today asking you to download install_flash_player.exe is almost certainly attempting a .
Files are locked/encrypted for ransom (e.g., ) [1]. Spyware/Backdoor install_flash_player.exe