Home Malware Programs Adware UnknownFile

UnknownFile

Posted: April 20, 2015

Threat Metric

Ranking: 10,995
Threat Level: 1/10
Infected PCs: 9,277
First Seen: April 20, 2015
Last Seen: October 13, 2023
OS(es) Affected: Windows

UnknownFile is a Potentially Unwanted Program (PUP) created by PerformerSoft. It is promoted as a useful tool that can help the user open unknown file formats. Reportedly, the program scans the web for the proper application, needed for the opening of less popular file extensions. Although this feature may seem to be helpful, the computer users don't need a special tool for this as the Windows offers the same functionality. This is just an excuse for UnknownFile to reach your system, after which it proceeds with typical adware behavior. The user will notice numerous ads in the form of pop-ups, banners and hyperlinked words. They may harm the overall performance of the browser. Clicking on the ads carries the risk of visiting harmful domains, so people should ignore them. Most frequently, UnknownFile arrives as a bundle towards freeware. If it has been installed without your knowledge and you prefer to surf the Internet without annoying ads, you should delete the PUP.

Technical Details

Registry Modifications

The following newly produced Registry Values are:

HKEY..\..\..\..{RegistryKeys}SOFTWARE\Classes\SOFTWARE\UnknownFileSoftware\UnknownFileHKEY_LOCAL_MACHINE\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..{Uninstaller}UnknownFile

Additional Information

The following directories were created:
%appdata%\UnknownFile
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