It's not Sonic.exe, but it kind of reminds me of one of Friday Night Funkin' mods. Image found by Kix Fantasma Thumbnail and Game: https://sonicfangameshq.com/forums/threads/sonic-fangame.1045/

According to JasonGamer9000, this sequel was released on September 11. This date is (most likely) a reference to 9/11 to the terrorist attack in 2001. Shitty? I know. It's possible this game also involves murder and suicidal parts in the background (speculation). I made this thumbnail to make it more eerie and reference 9/11 since this game was released on September 11. But for some shitty reason, somebody removes the download link as if they are playing the ARG, as the creator expects anybody to re-upload the file to the internet. Download: https://youtu.be/04AxhCxQBxo?si=46-fsJt3KOnobr5D https://youtu.be/_fZNhkdFnog?si=_HdTfQExyM9pTXS8 https://gamejolt.com/games/Green_mountain2/920779

8 months later, I got this game called "Green Mountain_2" from some guy's yard sale. This game is eerie.