Discord

Discord.exe is the Discord desktop app, the mainstream voice, text, and community client, with an optional in-game overlay. It installs per-user and is paired with a small updater, Update.exe, which is Discord-signed but published through GitHub, so Windows often labels the startup entry as coming from 'GitHub.' That looks odd but is expected.

What running it does: Discord auto-starts at Windows login by default and self-updates on launch, then runs in the background. With the in-game overlay enabled, it injects a DLL into the game to draw chat and voice indicators over it.

That overlay uses DLL injection, the same class of technique cheats use, because Windows has no supported way for one app to draw over another's game. As a result the Discord overlay frequently fails or is blocked under kernel anti-cheats like Vanguard, EAC, and BattlEye, and turning it off is a common first step when troubleshooting a crash or an anti-cheat conflict.

If you use Discord, this process and its updater are expected, including the auto-start entry. If a protected game crashes or behaves oddly, disabling the Discord overlay for that game is the usual fix.