Home Malware Programs Potentially Unwanted Programs (PUPs) Master PC Cleaner

Master PC Cleaner

Posted: October 2, 2017

Threat Metric

Ranking: 17,409
Threat Level: 1/10
Infected PCs: 4,965
First Seen: October 2, 2017
Last Seen: October 15, 2023
OS(es) Affected: Windows

The Master PC Cleaner is a Potentially Unwanted Program (PUP), which might be advertised via software bundles and online advertisements. According to the description of this software, the Master PC Cleaner is supposed to help users enhance the performance of their computers by disposing of junk files and unnecessary data automatically, as well as applying other optimizations and fixes, which will supposedly improve the overall performance and stability of the user's computer. However, what the ads and the official website of the Master PC Cleaner might forget to mention is that this tool comes in two versions – a free one and a paid one. The free one serves as a scanner only, and it is not able to carry out any of the optimization operations that the users are likely to expect.

Although having the Master PC Cleaner on your computer is not harmful, some users might find this tool annoying since it may display reminders whose purpose is to convince the user to purchase the full version of the software regularly.

If you find the Master PC Cleaner's services valuable, then there's no real reason to consider the removal of this application. However, if you are one of the many users who find the Master PC Cleaner to be annoying and do not wish to continue using its services, then there are two ways to approach the removal of this Potentially Unwanted Program from the computer. Since this program is not harmful, it can be removed via the Windows Control Panel manually. However, if you want to be certain that none of its components will be left behind, then you should consider using a reputable PC security scanner that will deal with this PUP in a matter of minutes.

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:



C:\Users\<username>\Downloads\mpclsetup.exe File name: mpclsetup.exe
Size: 6.56 MB (6564552 bytes)
MD5: 7189d96606ebc68d4a9800282c8f5903
Detection count: 70
File type: Executable File
Mime Type: unknown/exe
Path: C:\Users\<username>\Downloads\mpclsetup.exe
Group: Malware file
Last Updated: May 25, 2023
mpclsetup.exe File name: mpclsetup.exe
Size: 5.16 MB (5169152 bytes)
MD5: c2bb142a2d52c8bcd7941d22c3854885
Detection count: 5
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: May 25, 2023

Registry Modifications

The following newly produced Registry Values are:

File name without pathMaster PC Cleaner.lnkRegexp file mask%WINDIR%\System32\Tasks\Master PC Cleaner_LogonHKEY..\..\..\..{RegistryKeys}SOFTWARE\mpc-prHKEY_LOCAL_MACHINE\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..{Uninstaller}{A00DA73E-1842-4E5A-91A5-EFEE1186C744}_is1
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