Real answer? Shut your PC down, pull the hard drive, and use a dock to pull your personal data to another PC. Only files you are 100% certain are clean. No apps or scripts.
Then wipe the machine without using an internet connection. Change all your passwords and reconfigure your home network. Then reflect on what you did in regards to risky online behavior and be more proactive in protecting your privacy and data.
If real, how they did it is irrelevant if you don’t have forensic know-how. You need to now be proactive in preventing any further interference. If they can create a file on your desktop, they have access to the system and what is on it.
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Change your passwords AFTER reseting your PC. Otherwise the hacker could gain access to your new passwords.
One of the reasons why you want to keep a live-bootable operating system within one of your flashdrives or optical discs.
You probably need another device to securely boot up a live OS to recover your data. Don’t use Windows, because it might still be vulnerable to autoplay scripts when mounting your infected OS partition and I assume your infected OS is Windows, so the malwares are going to be compatible and unless you know what you’re doing, you probably don’t want to take that chance.
Tbh the advice provided is already pretty accurate, as to how; there’s a non zero chance that a friend may have sent you a RAT (remote admin tool/remote access Trojan), these are basically the best back door to someone’s computer you can have, normally you want to have physical access to someone’s computer to install them or have a user run it with elevated privileges, (there are other ways as well, such as spoofing a jpg, other methods of remote code execution). These tools will allow you to access there computer, files, keylog, steal passwords, send popups, open and close the disk tray plus basically anything else you could do with access to the computer.
Basically follow other people’s advice in regards to undoing this.
Was going to say, this sounds more like a prank from a friend who had access to the machine, than an actual hack. A malicious hacker isn’t going to drop a “hibro.txt” on your desktop to mess with you. They aren’t going to be interactively watching your session at all. They’re going to silently keylog you for financial or identity details, or they’re going to install ransomware.
Sounds like malware games to me. Probably a windows user, probably disabled Defender.
