Couloader.exe

is not a standard Windows component. In the world of cybersecurity, "loaders" are small programs that act as a bridge. Their only job is to bypass your antivirus, establish a connection to a hacker’s server, and then download the "real" payload—such as a Remote Access Trojan (RAT) or a credential stealer. Is it Dangerous?

If you suspect an infection, do not try to delete the file manually, as it may have multiple copies or "watchdog" processes that will just reinstall it. CouLoader.exe

Yes. If you find this file in unexpected locations like your AppData or Downloads folder, it is almost certainly malicious. These programs use advanced tricks to stay hidden: is not a standard Windows component