Us.yhs4.search.yahoo.com Virus – Completely Removal Guide

Overview of Us.yhs4.search.yahoo.com Virus 

Us.yhs4.search.yahoo.com redirect is recognized as a browser hijacker website which can cause havoc to computers and affect the users’ regular online activities. This malicious redirect virus declares that it is a legitimate and multifunctional website like Yahoo, Google or Bing. It will take any chance to intrude into your affected computer and then automatically get installed on your computer without consent. In general, Us.yhs4.search.yahoo.com redirect will attack the browser via many ways such as infected program, unsafe executable processes or the malicious links. This stealthy redirect virus also spreads its components on the attachments or links in Email. To prevent this problems, users may consider not to click any link tagged “Us.yhs4.search.yahoo.com”.
During installation, the browser hijacker creates some files and adds new registry entries on the targeted computer in an effort to change the system settings. As a result, Internet Explorer, Mozilla Firefox and Google Chrome browsers will be massed up by serious troubles. That is, the default settings as homepage or start page will be replaced by other unwanted sites which are based on malicious domains developed by Us.yhs4.search.yahoo.com. As a result, this unwanted website can open automatically whenever users start the browsers or open a new tab. With a view to protect itself from be easily removed from the affected computer, this virus will forbid PC users to visit legitimate sites even display a lot of pop up advertisements to stop users from normal use.
The redirect virus should be removed from the infected computers without any delay. If this redirect virus could not be removed timely, many malicious add-ons, toolbars or extensions will be installed onto the browsers to track user’s online activities. How dangerous it is that this infection may record use’s browser history and cookies on the computer to help remote hackers steal money from victims. Moreover, the threat may consume almost 100% CPU usage and lead to very slow PC performance. What’s worse, the threat may even open a backdoor for cybercriminals by exploiting the system or browser vulnerabilities. With the help of backdoor loophole, cyber criminal could be able to remote control the infected browser for its malicious purpose.

What Does Us.yhs4.search.yahoo.com Get into Your Computer? 

Us.yhs4.search.yahoo.com is a tricky Redirect virus that can be widely distributed though many different channels. Many computer users primitively choose their installed antivirus programs to kill the redirect virus. However, many antivirus programs may fail to detect the redirect virus and remove it. Manual removal is not suitable for most of the PC users since it is very complex and risky. The former always needs high level of computer expertise while the later one may be much more convenient and safe. In this case, it is suggested that you manually remove the redirect virus if you are a computer advanced user.
Thousands of users who are the victims of this redirect would be in need of an efficient way to get rid of this browser hijacker but they don’t have a clue on how to remove it. Certain level of computer knowledge and skills are needed, if users want to manually remove this nasty redirect virus. Otherwise, any mistake occurs could lead to system crash.

Remove Us.yhs4.search.yahoo.com Redirect Step by Step

Step one: set the default homepage back

For Internet Explorer:

1. Click on Browser Tools

2. Select Manage Add-Ons on the tools window

3. Click Search Provider

4. Here you can see many kinds of search engine option as Bing and Google, select your favorite one to be a default homepage.

5. Choose Search Results and click on Remove icon to eliminate it

6. Click Tools, select Internet Options and then the General tab. Here you can option a website you like and save it.

c. Select ‘Search Results’ and click ‘Remove’ to remove it;

For Google Chrome:

1. Open Customize and control

2. Click on Settings

3. Select on Basic Options icon

4. Here you can reset your homepage (e.g.Google.com）

5. Once you choose a default homepage, click on Manage Search Engines and then click Google to be your default search engine.

6. Remove it from the browser by clicking Search Result and then the X’ mark

For Mozilla Firefox:

1. Click Manage Search Engine

2. Select Search Results and then click Remove option, click OK

3. Open Tools, under the General tab, set Google.com as default homepage

Step two: locate related files of Us.yhs4.search.yahoo.com and remove them from the computer

%AllUsersProfile%

%AllUsersProfile%\Programs\{random letters}\

%AllUsersProfile%\Application Data\~r

%AllUsersProfile%\Application Data\~dll

Step three: Remove Cookies on all Browsers

Internet Explorer:

a. Click options on the browser and then choose Internet Options

b. Open General tab, click Delete Browsing History to remove all related cookies

c. Select cookies and click Delete

Firefox:

a. Click option

b. Select Privacy and then click on Remove Individual Cookies icon

c. Delete relevant cookies list on the box

Google Chrome:

a. Click option

b. Open Under the Bonnet tab

c. Select Privacy and then click Clear browsing data

d. Delete all cookies

Step four: Remove Malicious Registry 

a. Open Registry Editor on the start menu

b. Type in Regedit and click OK

c. Remove all the following registry entries

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings “CertificateRevocation” = ‘1’

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments “SaveZoneInformation” = ‘0’

Conclusion: 

This Us.yhs4.search.yahoo.com redirect infection needs to be removed completely and immediately since it has been one of the most dangerous virus on the Internet. Otherwise, the whole computer will be seriously damaged by it. The majority of the users will choose to run their antivirus program to remove this redirect virus. Anyway, its real aim is to damage your computer and steal your sensitive information through recording your cookies and browser history for illegal benefits. Hence, the manual removal method will be safer.
Manual removal of Us.yhs4.search.yahoo.com is effective but not for each one, especially for a regular PC users who may lead to irreparable PC damage. If you are a novice user, we sincerely suggest you ask a computer expert to help you or just download and use an advanced malware removal tool to perform the removal, which can avoid unnecessary trouble.