Home Malware Programs Potentially Unwanted Programs (PUPs) PUP.Wilsys

PUP.Wilsys

Posted: February 13, 2014

Threat Metric

Ranking: 3,426
Threat Level: 1/10
Infected PCs: 216,075
First Seen: February 13, 2014
Last Seen: March 8, 2025
OS(es) Affected: Windows


PUP.Wilsys is a potentially unwanted program (PUP), which may be downloaded from unreliable download websites the Internet when a computer user downloads various free programs. PUP.Wilsys may result in a variety of system issues when it is downloaded and installed on the computer system. The computer user may allow PUP.Wilsys to be downloaded on the PC when he is downloading other free software from the Internet, or he may download PUP.Wilsys inadvertently by not paying enough attention to the installation process of the application. Once downloaded and installed, PUP.Wilsys may execute numerous background processes that may cause slow downs of the PC. PUP.Wilsys may cover the screen of the computer with numerous random pop-up advertisements and messages. PUP.Wilsys may take over the Web browser and result in disturbing diversions to various unreliable websites that may be commercial and created to make money from increased web traffic and clicks on ads.

Technical Details

Registry Modifications

The following newly produced Registry Values are:

Regexp file mask%windir%\system32\tasks\searchnewtab[NUMBERS]HKEY..\..\..\..{RegistryKeys}Software\Microsoft\Windows\CurrentVersion\Run\SearchNewTabSoftware\SearchNewTabHKEY_LOCAL_MACHINE\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..{Uninstaller}SearchNewTab

Additional Information

The following directories were created:
%appdata%\SearchNewTab
The following URL's were detected:
toupdate15.com/search/?var idParamName = "jj83__11".replace('_', '7');
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