PUM.Optional.DisabledRightClick

Short Bio

This detection is for potentially unwanted modifications (PUMs) in the registry where the context menu—also known as the right-click shortcut menu—is disabled. As such, users won’t be able to see options when they press the right-click button of their mouse or trackpad while in the browser, on their desktop, or at a file or folder. These changes could be made by malware to hinder users from identifying, verifying, and removing it.

System Modifications

The following registry value data are modified or added:

Under
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\
Internet Explorer\Restrictions

From:
NoBrowserContextMenu=0

To:
NoBrowserContextMenu=1

Under
HKEY_CURRENT_USER\Software\Policies\Microsoft\
Internet Explorer\Restrictions

From:
NoBrowserContextMenu=0

To:
NoBrowserContextMenu=1

Under
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\
CurrentVersion\Policies\Explorer

From:
NoViewContextMenu=0

To:
NoViewContextMenu=1

Under
HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Policies\Explorer

From:
NoViewContextMenu=0

To:
NoViewContextMenu=1

Remediation

Malwarebytes can modify these registry value data back to their Windows default settings without user interaction.

Also, we advise users to do a full system scan as PUM.Optional.DisabledRightClick could have been added to the system by malware or a PUP.