Home Possibly Unwanted Program WebSearcher

WebSearcher

Posted: January 5, 2016

Threat Metric

Ranking: 19,861
Threat Level: 1/10
Infected PCs: 115
First Seen: January 5, 2016
Last Seen: January 13, 2025
OS(es) Affected: Windows


WebSearcher is an adware program that exploits proxy settings as a means of injecting content sponsored by its third-party affiliates into your browser. A combination of invasive advertisement delivery mechanisms and poor installation practices have caused malware experts to recommend avoiding any prolonged use of this add-on, which may try to block any standard uninstall procedure conducted by the user. Qualified security software capable of removing advanced adware or threatening software should be able to remove WebSearcher and restore all relevant settings.

The Web Search Being Conducted Automatically

Their well-earned reputation for poor security has yet to curtail the production of new adware, the development of which persists as a profitable but legally questionable venture. However, most adware programs restrict themselves to simple, straightforward modifications that confine themselves to particular brands of browsers. In other cases, like WebSearcher, the advertisement-serving changes are sufficiently invasive that they apply to any attempts to browse the Web regardless of your browser of choice.

Although WebSearcher's website (the WebSearcher.eu search engine) promotes the add-on only for Firefox, malware experts found WebSearcher affecting both Internet Explorer and Chrome, as well. Its advertisement-delivery function ay use content injected into your Web pages as your browser loads them, like most adware, but may change your local proxy server settings. Although PC users can view these non-standard settings from Windows via the Internet Options panel, WebSearcher's changes to the system Registry may prevent computer users from changing the settings back to their previous values.

The result is that your Web browsers may continue loading advertisements, without any discrimination between which websites you visit. Your browser's individual settings may be equally irrelevant for managing the advertising content, and standard advertisement-blocking add-ons are unable to counteract WebSearcher's invasive system modifications.

Extricating Your Browsing Habits from a WebSearcher Web

Along with its unnecessarily wide-sweeping settings changes, WebSearcher also may conduct a practice more often found in threat campaigns: concealing its identity with a virtual certificate. Its current root certificate derives itself from Fiddler Web, a debugging kit. WebSearcher also may use two other pieces of content from that normally-non-threatening package, the 'FiddlerCore' and 'FiddlerCoreWrapper' DLL files. Until further action is taken to prevent any future abuse of this certificate, PC users should take particular care on confirming the identity of the applications using it.

You could install WebSearcher from its search engine-based website, but, less honestly than that, WebSearcher also may circulate itself in installers for video codecs and media players. Obtaining file downloads only from a trustworthy resource is the easiest way to avoid adware like WebSearcher, but appropriate PC security tools also are capable of identifying many of the software bundlers that WebSearcher might use, such as SoftwareBundler:Win32/Tillail.

Inappropriate Registry changes for removing WebSearcher's advertisements also may cause unintended damage to other applications or services, including essential Windows files. Casual PC users should use anti-malware or anti-adware products with Registry-scanning features for removing WebSearcher, rather than enduring the risk of causing permanent damage for resolving a temporary advertisement problem.

Technical Details

Registry Modifications

The following newly produced Registry Values are:

HKEY..\..\..\..{RegistryKeys}SOFTWARE\Wow6432Node\WebSearcherUpdaterHKEY_LOCAL_MACHINE\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..{Uninstaller}WebSearcher Service

Additional Information

The following directories were created:
%PROGRAMFILES%\WebSearcher%PROGRAMFILES(x86)%\WebSearcher

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