What is Wtsapi32.dll? Should I remove it?

by Olivia Morelli - -

Reasons to remove Wtsapi32.dll file:

Originally, Wtsapi32.dll file is a safe file that plays an important role in computer’s system. It is used during the launch of Mozilla Firefox or Google Chrome browser. However, it seems that developers of Youndoo hijacker decided to step up their game and use a technique known as DLL hijacking to make Youndoo.com site appear in user’s web browsers everytime the user opens them. For this, Youndoo redirect virus places a fake version of Wtsapi32.dll in Chrome and Firefox applications’ folders. Once the victim double-clicks on the executable file of one of these web browsers, the browser runs the fake DLL file instead of the original one, since Windows checks the same folder that stores the executable file first and attempts to find requisite DLL files here.

The Wtsapi32.dll file reads HKEY_CURRENT_USER\Software\MessageGet “hp” (homepage) Registry value. The URL that this Registry value holds is going to be opened in victim’s web browser. The victim can change this registry value to any other preferred URL to force the browser to load it on the startup. However, we recommend you to remove Wtsapi32.dll files from affected browsers’ folders entirely. To completely undo Youndoo hijack, we suggest scanning the entire computer system using a decent spyware/malware removal tool, for instance, Reimage.

Distribution methods

Considering that developers of browser hijackers used to promote particular web search engines by distributing suspicious browser add-ons or applications that change browser’s homepage address (such programs spread using software bundling technique), which could be located and removed rather easily even by inexperienced computer users, this new technique complicates the Youndoo.com removal process. Therefore, if you cannot remove Youndoo.com or another suspicious website set as homepage in your browser by deleting suspicious applications and extensions from your system, there is a great chance that DLL hijacking technique was used to embed that URL in your web browser. We advise you to be careful when installing free software from the Internet and check Advanced or Custom installation settings to see if there are any suspicious programs bundled with it. If you see any, deselect them.

Wtsapi32.dll removal tips

We strongly recommend you to remove Wtsapi32.dll using a good anti-malware software. This program possibly spreads along other questionable applications, and the best way to detect and remove them all is to let an automatic malware removal software detect them all.  

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What to do if failed?
If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is a recommended tool to scan your system for possible threats and crappy software. The trial version of the product will find harmful applications in your system.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with SpyHunter 5.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Combo Cleaner.

About the author

Olivia Morelli
Olivia Morelli - Ransomware analyst

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