I have a new Toshiba laptop that I’ve had for about 3 months now and I am starting to get a lot of pop ups on a daily basis. It happens on both IE and Firefox and the most annoying thing is when I click a new tab, I get redirected to Us.yhs4.search.yahoo.com. It seems like a virus. I am not sure if it is really Yahoo. Anyway, I want to get rid of it from my computer. However, I have searched and tried all kinds of fixes – running virus scans, deleting any yahoo programs on my computer, disabling some add-ons, none of them work. Any help will be highly appreciated.
Us.yhs4.search.yahoo.com is deceitful web page that pretends itself to be a part of official Yahoo, offering free games, news and search services. Watch out! Don’t be tricked by this website. If this page appears on your browser out of nowhere, your computer must be infected with a browser redirect virus. This website is completely fake and it is designed to facilitate ID theft, if you really regard it as Yahoo, it can put your yahoo account and even the whole computer system in a dangerous situation. This virus usually enters into your computer bundled with free applications such as videos, free utilities which you download from Internet. It can bypass the detection of antivirus program so you won’t get any security alert when it gets installed on your computer.
Once a redirect virus is running, it forces PC users to visit this fake Yahoo site again and again. This malware is able to prevent you from viewing the Web pages that they want to see on the browser. So if you use a search engine includes Google, Bing or other engines, you may still get the results but when you try to open the site you want, it will be always redirected to Us.yhs4.search.yahoo.com or other random sites. This bad virus can change your homepage and come itself automatically as a new tab on your browser, even it will add unwanted toolbar to your browsers no matter you are using IE, Firefox or even Google Chrome. In addition, whenever your computer is connected to Internet, you will be bombarded with hundreds of pop-up advertisements.Cyber criminals use the artificial traffic to boost affiliate payments. Undoubtedly, Us.yhs4.search.yahoo.com redirect is one of the most annoying and dangerous malware that hits the Internet now. It involves a tracking cookie that helps attackers to change search results on Yahoo or Google and the other major search engines. Once found, an immediate removal is needed.
Browser hijacker infection like Us.yhs4.search.yahoo.com may enter your system as an add-on for your browser or bundled-up with some free software. Most of time, it can be downloaded from a website you visited, something you clicked on, or a pop-up that you did not request to view. You may not even know when and how you download this browser hijacker which compromises your internet security until you find your computer is fully messed up. A hijack virus is a type of computer virus known for its ability to disrupt your Internet browsing. It can redirect your Internet searches to random sites, disallow you from visiting certain Web sites, and change your Internet home page. In addition, it is able to slow your computer, decrease your available memory, and flood your computer with popup advertisements. When you detect the presence of such malicious hijacker, a complete removal is needed without any hesitation.
If you open your browser window (includes IE, Firefox, Safari and Google Chrome etc.) and notice immediately that your home page has been changed to a page you do not recognize, then your browser may have been hijacked by a virus. For this type of hijack virus, it can change your homepage to Us.yhs4.search.yahoo.com without your permission. Other malicious activities can be shown on your computer after hijacked are listed below:
1. You keep getting random pop-ups opening in new browser tabs.
2. When clicking on Google search links you get taken to sites that have nothing to do with the subject you searched for.
3. Anti-virus and firewall software won’t start.
4. Internet stops working.
5. Unknown software has been installed without your authorization.
6. You can’t access reputable sites unless you type the URL into the navigation bar
Us.yhs4.search.yahoo.com hijacks your browser to redirect your web search results and changes the homepage and browser settings. To completely uninstall it from an infected system, manual removal is the first choice because sometimes antivirus software cannot pick up the exact computer threat timely or remove it permanently. Now most browser hijackers are quite similar to spyware and adware threats and therefore cannot be removed with the help of popular antivirus products. Users can follow the manual guide here to get rid of this browser hijacker completely.
1. Clear all the cookies of your affected browsers.
Click on the “Tools” menu and click the “Clear browsing data” button.
Select “Delete cookies and other site data” to delete all cookies from the list.
Open Internet explorer window
Click the “Tools” button
Point to “safety” and then click “delete browsing history”
Tick the “cookies” box, then click “delete”
Click on Tools, then Options, select Privacy
Click “Remove individual cookies”
In the Cookies panel, click on “Show Cookies”
To remove a single cookie click on the entry in the list and click on the “Remove Cookie”
To remove all cookies click on the “Remove All Cookies” button
2. End the malicious process from Task Manager.
Once Us.yhs4.search.yahoo.com redirect is installed, computer user may notice that CPU usage randomly jumps to 100 percent. At any time Windows always has many running processes. A process is an individual task that the computer runs. In general, the more processes, the more work the computer has to do and the slower it will run. If your system’s CPU spike is constant and remain at a constant 90-95%, users should check from Task Manager and see if there is a suspicious process occupying the system resources and then end it immediately.
(The name of the virus process can be random.)
Press Ctrl+Shift+Esc to quickly bring up Task Manager Window：
3. Show hidden files and folders.
Open Folder Options by clicking the Start button, clicking Control Panel, clicking Appearance and Personalization, and then clicking Folder Options.
Click the View tab.
Under Advanced settings, click Show hidden files and folders, uncheck Hide protected operating system files (Recommended) and then click OK.
4. Remove all the malicious files related to Us.yhs4.search.yahoo.com hijacker manually.
C:\Documents and Settings\LocalService\Local Settings\Temporary Internet Files\*.exe
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main StartPage
Us.yhs4.search.yahoo.com uses browser helper objects and third party malware including sponsored adware and spyware platforms to change your homepage and modify your browser settings without your permission. It is very annoying that your web browser suddenly starts behaving as if it had a mind of its own. It can open its own page automatically as soon as you launch the browser and prevent you from going to the web page you prefer. In addition, your default search engine and homepage are changed to other websites which you don’t want at all. Whenever you reset the homepage, it does nothing. Such nasty virus has to be removed manually with expertise.
Published by & last updated on March 6, 2014 10:16 am