Hello John, I'm Quinn, and I'm glad to help.
First off, don’t be too hard on yourself, these scams are designed to pressure and confuse people into acting quickly. You were smart to recognize something was off before they got full control. Now, let’s break this down:
A. Did they gain access to your PC?
It sounds like they did NOT successfully establish full remote access. UltraViewer (similar to TeamViewer) is a remote desktop software. They needed you to install it and provide the remote ID & password for full control, which you did not do. If they only had you type commands in Command Prompt, they could see what you saw over the phone, but they couldn’t actively control your system. They used fake command line "scans" to scare you. Nothing they said was real, it was all meant to pressure you.
B. Did they infect your PC with malware?
Since you never completed the UltraViewer remote connection, they couldn’t install anything themselves. The "scan" they ran in Command Prompt was fake, "dir /s" just lists files; it’s not an antivirus scan. The threats they claimed (hackers, stolen data, illegal activity) were lies to scare you. You ran multiple security scans and found nothing. If they had installed malware, something likely would have been detected. If you haven’t done this yet, you can run a Microsoft Defender offline scan to ensure nothing was missed. Overall, you’ve already done a lot, which is good.
C. Should you reinstall Windows?
Probably not necessary since nothing indicates malware was installed. But if you want 100% peace of mind, a clean reinstall of Windows 11 is an option. Before going that route, try:
Running "sfc /scannow" and "DISM /Online /Cleanup-Image /RestoreHealth" in Command Prompt (as Admin) to check system integrity. Additionally, scanning again with Malwarebytes (free version) just as an extra check.
D. What should you do now?
- Uninstall UltraViewer (if it’s still on your system) and you can check installed programs for anything suspicious (Settings > Apps > Installed Apps).
- They claimed your network was breached, though this is likely a lie. Still, it's a good idea to check. Resetting your router is one of the easiest and most effective ways to secure your network, as it wipes out any unauthorized settings or access and lets you start fresh. If you just want to check for intrusions without resetting, logging into your router and reviewing connected devices is a quicker first step. However, if you're unsure or want complete peace of mind, a reset is the best option.
- Your accounts are likely safe but keep monitoring your accounts, which you’re already doing, just to be sure. So far, nothing suggests your accounts were compromised. As long as you’ve changed your passwords and see no unusual activity, you should be fine.
- Be extra cautious with future pop-ups or scare tactics.
From everything you’ve described, it seems like you caught on before any real damage was done. They tried to scam you, but you didn’t give them full access, so you’re probably fine. Your password changes and security scans were the right moves. If everything looks normal, you’re likely in the clear.
A full Windows reinstall isn’t necessary unless you just want peace of mind. Also, you don’t need to buy Windows to perform a format. I get why you're mad at yourself, but honestly? You did better than most people in this situation. You caught on before they could do real damage. Just chalk it up as a learning experience and move forward. You did well.