Home Possibly Unwanted Program Best Cleaner

Best Cleaner

Posted: September 1, 2016

Threat Metric

Threat Level: 1/10
Infected PCs: 4,202
First Seen: September 1, 2016
Last Seen: July 14, 2023
OS(es) Affected: Windows


The Best Cleaner is advertised as a PC optimization application that can clear junk and temporary files, defragment the Windows Registry and optimize the user's Registry settings so that the computer and applications will run more smoothly. However, the Best Cleaner isn't a reputable tool, and there is barely any information about its publisher. The Windows Registry is a delicate field, and messing up any of the settings there may result in system instability and other severe issues, and this is why it is not recommended to use dubious applications like the Best Cleaner to clean up the Windows Registry.

The Best Cleaner utility is classified as a Potentially Unwanted Program, so removing it is never a bad decision. Keep in mind that there are much better and more reliable alternatives to the Best Cleaner, and many of them will deliver better results surely. It is not uncommon for PUPs and low-quality software to rely on software bundling as their primary method of finding new users. The Best Cleaner software may be seen in low-quality software bundles which may use misleading installation instructions and other tricks to convince people to install the Best Cleaner on their computers. If you find this program on your PC, and you don't remember installing it, then we recommend that you remove it as soon as possible. The removal of the Best Cleaner can be done automatically via anti-malware software or manually by deleting the program via the Windows control panel.

Technical Details

Registry Modifications

The following newly produced Registry Values are:

HKEY_LOCAL_MACHINE\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..{Uninstaller}BeCleaner_is1BestCleaner_is1BestCleanerW_is1

Additional Information

The following directories were created:
%PROGRAMFILES%\BestCleaner%PROGRAMFILES%\BestCleanerW%PROGRAMFILES%\bestPcCleaner%PROGRAMFILES(x86)%\BestCleaner%PROGRAMFILES(x86)%\BestCleanerW%PROGRAMFILES(x86)%\bestPcCleaner
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