PUP.Mysterium VPN

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Last updated:

Threat Scorecard

Threat Level: 10 % (Normal)
Infected Computers: 351
First Seen: March 10, 2023
Last Seen: December 1, 2025
OS(es) Affected: Windows

The detection of PUP.Mysterium VPN on your system indicates the presence of a potentially unwanted program (PUP) that may be causing issues with your computer's performance and security. It is essential to understand the nature of this threat and take appropriate steps to remove it to prevent any potential harm.

What Is PUP.Mysterium VPN?

PUP.Mysterium VPN is a type of potentially unwanted program that may have been installed on your system without your knowledge or consent. PUPs are software applications that may not be malicious in nature but can still cause problems, such as slowing down your computer, displaying unwanted advertisements, or collecting your personal data. The name PUP.Mysterium VPN suggests that it may be related to a virtual private network (VPN) application, but its actual purpose and behavior may be different.

How PUP.Mysterium VPN Operates

Like other PUPs, PUP.Mysterium VPN may operate by installing itself on your system through various means, such as bundled software, infected downloads, or exploited vulnerabilities. Once installed, it may start running in the background, consuming system resources, and potentially collecting your personal data, such as browsing history, search queries, or other sensitive information. It may also display unwanted advertisements, pop-ups, or notifications, which can be annoying and disrupt your work or browsing experience.

Symptoms of Infection

If your system is infected with PUP.Mysterium VPN, you may experience various symptoms, such as slow system performance, unwanted advertisements, or suspicious activity. You may also notice that your browser settings have been changed, or that new toolbars or extensions have been installed without your consent. Additionally, you may receive notifications or alerts from your antivirus software or other security tools, indicating that a potentially unwanted program has been detected.

  • Slow system performance or crashes
  • Unwanted advertisements or pop-ups
  • Suspicious activity or unknown processes running in the background
  • Changed browser settings or new toolbars/extensions
  • Notifications or alerts from antivirus software or security tools

How to Remove PUP.Mysterium VPN

  1. Boot your system in Safe Mode with Networking to prevent the PUP from running and to allow for a safe removal process.
  2. Run a full scan with a reputable antivirus tool, such as SpyHunter, to detect and remove any malware or PUPs, including PUP.Mysterium VPN.
  3. Uninstall any suspicious programs or applications that may be related to the PUP, using the Control Panel or Settings app.
  4. Reset your browser settings to their default values, including Chrome, Firefox, and Edge, to remove any changes made by the PUP.
  5. Reboot your system and run another scan with your antivirus software to ensure that the PUP has been completely removed.

Conclusion

Removing PUP.Mysterium VPN from your system is essential to prevent any potential harm and to restore your computer's performance and security. By following the steps outlined above, you can safely and effectively remove this PUP and prevent any future infections. It is also important to practice good security habits, such as keeping your operating system and software up to date, using strong passwords, and being cautious when downloading or installing new applications.

SpyHunter Detects & Remove PUP.Mysterium VPN

File System Details

PUP.Mysterium VPN may create the following file(s):
# File Name MD5 Detections
1. MysteriumVPN-Setup-10.14.4.exe 486843b9e7b463c9cffebdb0cfb72442 123
2. MysteriumVPN.exe 5514c9a23f56f6d4e34005a96465fd95 100