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Malwarebytes for Windows detected a Potentially Unwanted Modification
PUM.Optional.DisplayHiddenFolder is Malwarebytes’ detection name for potentially unwanted modifications (PUMs) in the Windows registry where users are prevented from finding hidden files and folders.
The following registry value data are modified:
Under
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\
CurrentVersion\Explorer\Advanced\Folder\
Hidden\SHOWALL
From:
CheckedValue=1
To:
CheckedValue=0
or
CheckedValue=2
Under
HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Explorer\Advanced\Folder\
Hidden\SHOWALL
From:
CheckedValue=1
To:
CheckedValue=0
or
CheckedValue=2
Malwarebytes can modify these registry value data back to its Windows default setting without user interaction.
Also, we advise users to do a full system scan as PUM.Optional.DisplayHiddenFolder could have been added to the system by malware or PUP.
When a Potentially Unwanted Modification (PUM) is detected on your computer, Malwarebytes for Windows does not know whether it was authorized. Optimization software, malware, and Potentially Unwanted Programs (PUPs) are known to make these types of changes, hence they are regarded as potentially unwanted by design.
To have Malwarebytes for Windows ignore a PUM, you must add the PUM to the Allow list. Here’s how to do it.
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