PUP.Microfast PC

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Last updated:

Threat Scorecard

Threat Level: 10 % (Normal)
Infected Computers: 274
First Seen: May 15, 2015
Last Seen: January 15, 2026
OS(es) Affected: Windows

The detection of PUP.Microfast PC 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.Microfast PC?

PUP.Microfast PC is a type of malware that is classified as a potentially unwanted program. This means that while it may not be as harmful as other types of malware, such as viruses or Trojans, it can still cause problems with your system and compromise your privacy. PUPs are often installed inadvertently by users, usually through bundled software downloads or by clicking on malicious links.

How PUP.Microfast PC Operates

PUP.Microfast PC, like other PUPs, operates by installing itself on your system and then executing its payload. This can include displaying unwanted advertisements, collecting your personal data, and modifying your system settings. PUPs can also install additional malware or unwanted software on your system, which can further compromise your security. In some cases, PUPs can also slow down your system's performance and cause instability.

Symptoms of Infection

If your system is infected with PUP.Microfast PC, you may notice several symptoms. These can include unwanted pop-ups and advertisements, slow system performance, and unfamiliar programs or toolbars installed on your system. You may also notice that your system settings have been modified, such as your default search engine or homepage. In some cases, you may also experience crashes or freezes, which can be frustrating and disrupt your work or other activities.

  • Unwanted advertisements and pop-ups
  • Slow system performance
  • Unfamiliar programs or toolbars installed on your system
  • Modified system settings
  • Crashes or freezes

How to Remove PUP.Microfast PC

  1. Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools.
  2. Download and install a reputable anti-malware tool, such as SpyHunter, and perform a full scan of your system to detect and remove the malware.
  3. Uninstall any suspicious programs or software that you have installed recently, as they may be related to the PUP.Microfast PC infection.
  4. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any modifications made by the malware.
  5. Reboot your system and perform another scan with your anti-malware tool to ensure that the malware has been completely removed.

Conclusion

Removing PUP.Microfast PC from your system requires careful attention to detail and a thorough understanding of the malware's behavior. By following the steps outlined above, you can effectively remove the malware and prevent any potential harm to your system. It is essential to be vigilant and proactive in protecting your system from malware and other online threats. Regularly updating your operating system and software, using reputable anti-malware tools, and being cautious when downloading software or clicking on links can help to prevent infections and keep your system secure.

SpyHunter Detects & Remove PUP.Microfast PC

Registry Details

PUP.Microfast PC may create the following registry entry or registry entries:
File name without path
Microfast PC.lnk
Regexp file mask
%WINDIR%\System32\Tasks\Microfast_Daily
%WINDIR%\System32\Tasks\Microfast_LogOn
%WINDIR%\System32\Tasks\Microfast_Protect
%WINDIR%\Tasks\Microfast_Daily.job
%WINDIR%\Tasks\Microfast_LogOn.job
%WINDIR%\Tasks\Microfast_Protect.job
SOFTWARE\Caphyon\Advanced Installer\LZMA\{1E353B20-4084-4BDB-9D63-FBDBC56F3C24}
SOFTWARE\Caphyon\Advanced Installer\Scheduled Tasks\{37B7DAB9-C107-4F27-A979-1ABD5D564722}
SOFTWARE\MicrofastPC
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures\Microfast_Daily.job
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures\Microfast_Daily.job.fp
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures\Microfast_LogOn.job
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures\Microfast_LogOn.job.fp
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures\Microfast_Protect.job
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures\Microfast_Protect.job.fp
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microfast_Daily
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microfast_LogOn
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microfast_Protect
SOFTWARE\Wow6432Node\Caphyon\Advanced Installer\LZMA\{1E353B20-4084-4BDB-9D63-FBDBC56F3C24}
SOFTWARE\Wow6432Node\Caphyon\Advanced Installer\Scheduled Tasks\{37B7DAB9-C107-4F27-A979-1ABD5D564722}
SOFTWARE\Wow6432Node\MicrofastPC
{10B920EF-A4FA-4E76-B005-33400B4960C2}
{1E353B20-4084-4BDB-9D63-FBDBC56F3C24}

Directories

PUP.Microfast PC may create the following directory or directories:

%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\Microfast PC
%ALLUSERSPROFILE%\Start Menu\Programs\Microfast PC
%APPDATA%\MicrofastPC
%PROGRAMFILES%\Microfast PC
%PROGRAMFILES(x86)%\Microfast PC
%appdata%\Microfast_App