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isearch.zoo.com Virus

Also Known As: Zoo Toolbar
Damage level: Medium

What is Zoo Toolbar

The Zoo Toolbar browser add-on was created by InfoSpace LLC. This browser hijacker infiltrates Internet browsers (Internet Explorer, Google Chrome, and Mozilla Firefox) using a deceptive software marketing method called 'bundling'. Commonly, Internet users install isearch.zoo.com adware without their consent when downloading or installing free software.

After successful infiltration, this browser settings-changing adware assigns the browser homepage and default search engine fields to the isearch.zoo.com website. This browser hijacker is not technically a virus or malware, however, redirects to this site may lead to malware infections (when clicking third party ads displayed by this website).

isearch.zoo.com

Zoo Toolbar tracks users' Internet browsing activity by recording IP addresses, referral data, browser types, search terms, and links clicked. This information can be personally identifiable, thus, the presence of this browser hijacker on your system can lead to serious privacy issues or identity theft.

The isearch.zoo.com website can be used to search the Internet, however, be aware that the search engine used by this site contains many deceptive sponsored search results, which may lead to offensive and objectionable content.

Using this website for your daily Internet searches is not recommended and may lead to installation of additional potentially unwanted applications or malware infections.

 The main purpose of this potentially unwanted program is to generate revenue from Internet users who click third party ads generated by this bogus add-on. For these reasons, you are advised to remove isearch.zoo.com from your homepage and default search engine settings.

The isearch.zoo.com browser hijacker is similar to other potentially unwanted programs, which modify browser homepage and default search engine settings.

Examples include Xeesearch.com, Znoo.net, and Looksafesearch.com These websites claim to make users' Internet browsing experience more productive, however, browser plug-ins which redirect to these sites only diminish browser performance and add no real value.

Today, most freeware download websites employ 'download clients' - small programs offering installation of advertised browser extensions (commonly, adware). To avoid installation of the isearch.zoo.com browser hijacker, express caution when downloading free software - inspect each download step and decline installation of any promoted browser extensions.

When installing downloaded free programs, use the 'Advanced' or 'Custom' installation options - this will reveal installation of any bundled adware. Computer users who experience browser redirects to isearch.zoo.com should use this removal guide to eliminate the Zoo Toolbar from their Internet browser/s.

Deceptive free software installer used in isearch.zoo.com browser hijacker distribution:

isearch.zoo.com browser hijacker installer

Screenshot of the Zoo Toolbar installer:

zoo toolbar installer

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Quick menu:

isearch.zoo.com virus removal:

Windows 11 users:

Accessing Apps and Features in Windows 11

Right-click on the Start icon, select Apps and Features. In the opened window search for the application you want to uninstall, after locating it, click on the three vertical dots and select Uninstall.

Windows 10 users:

Accessing Programs and Features (uninstall) in Windows 8

Right-click in the lower left corner of the screen, in the Quick Access Menu select Control Panel. In the opened window choose Programs and Features.

Windows 7 users:

Accessing Programs and Features (uninstall) in Windows 7

Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.

macOS (OSX) users:

Uninstall app in OSX (Mac)

Click Finder, in the opened screen select Applications. Drag the app from the Applications folder to the Trash (located in your Dock), then right click the Trash icon and select Empty Trash.

Zoo toolbar uninstall via Control Panel

In the uninstall programs window: look for "Zoo Toolbar", select this entry and click "Uninstall" or "Remove".

After uninstalling the potentially unwanted program (which causes browser redirects to the isearch.zoo.com website), scan your computer for any remaining unwanted components. To scan your computer, use recommended malware removal software.

isearch.zoo.com virus removal from Internet browsers:

Video showing how to remove browser redirects:

Internet Explorer logoRemove malicious add-ons from Internet Explorer:

Removing zoo toolbar from Internet Explorer extensions

Click on the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer) select "Manage Add-ons". Look for "Zoo Toolbar", select this entry and click "Remove".

Change your homepage:

Removing isearch.zoo.com from Internet Explorer homepage

Click on the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer) select "Internet Options", in the opened window remove isearch.zoo.com and enter your preferred domain, which will open each time you launch Internet Explorer. You can also enter about: blank to open a blank page when you start Internet Explorer.

Change your default search engine:

Removing isearch.zoo.com from Internet Explorer default search engine

Click on the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer) select "Manage Add-ons". In the opened window, select "Search Providers", set "Google", "Bing", or any other preferred search engine as your default and then remove "Zoo Search".

Optional method:

If you continue to have problems with removal of the zoo toolbar, reset your Internet Explorer settings to default.

Windows XP users: Click Start, click Run, in the opened window type inetcpl.cpl In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows XP

Windows Vista and Windows 7 users: Click the Windows logo, in the start search box type inetcpl.cpl and click enter. In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows 7

Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.

Reseting Internet Explorer settings to default in Windows 8 - accessing

In the opened window, select the Advanced tab.

Resetting Internet Explorer settings to default on Windows 8 - Internet options advanced tab

Click the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - click the Reset button in the Internet options advanced tab

Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - confirm settings reset to default by clicking the reset button

Google Chrome logoRemove malicious extensions from Google Chrome:

Removing zoo toolbar from Google Chrome extensions

Click the Chrome menu icon Google Chrome options icon (at the top right corner of Google Chrome) select "Tools" and click on "Extensions". Locate "Zoo Toolbar", select this entry and click the trash can icon.

Change your homepage:

Removing isearch.zoo.com from Google Chrome homepage

Click the Chrome menu icon Google Chrome options icon (at the top right corner of Google Chrome) select "Settings". In the "On startup" section, click "set pages", hover your mouse over isearch.zoo.com and click the x symbol. Now, you can add your preferred website as your homepage.

Change your default search engine:

Removing isearch.zoo.com from Google Chrome default search engine settings

To change your default search engine in Google Chrome: Click the Chrome menu icon Google Chrome options icon (at the top right corner of Google Chrome) select "Settings", in the "Search" section, click "Manage Search Engines..." remove "Zoo Search" and add or select your preferred Internet search engine.

Optional method:

If you continue to have problems with removal of the zoo toolbar, reset your Google Chrome browser settings. Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome) and select Settings. Scroll down to the bottom of the screen. Click the Advanced… link.

Google Chrome settings reset step 1

After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.

Google Chrome settings reset step 2

In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.

Google Chrome settings reset step 3

Mozilla Firefox logoRemove malicious plugins from Mozilla Firefox:

Removing zoo toolbar from Mozilla Firefox extensions

Click on the Firefox menu firefox menu icon (at the top right corner of the main window) select "Add-ons". Click on "Extensions" and remove "Zoo Toolbar".

Change your homepage:

Removing isearch.zoo.com from Mozilla Firefox homepage

To reset your homepage click on the Firefox menu firefox menu icon (at the top right corner of the main window) then select "Options", in the opened window, remove isearch.zoo.com and enter your preferred domain, which will open each time you start Mozilla Firefox.

Change your default search engine:

Removing isearch.zoo.com from Mozilla Firefox default search engine

In the URL address bar, type about:config and press Enter.
Click "I'll be careful, I promise!".
In the search filter at the top, type: "zoo.com"
Right-click on the found preferences and select "Reset" to restore default values.

Optional method:

Computer users who have problems with zoo toolbar removal can reset their Mozilla Firefox settings.

Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, firefox menu icon in the opened menu, click Help.

Accessing settings (Reset Firefox to default settings step 1)

Select Troubleshooting Information.

Accessing Troubleshooting Information (Reset Firefox to default settings step 2)

In the opened window, click the Refresh Firefox button.

Clicking on Refresh Firefox button (Reset Firefox to default settings step 3)

In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.

Confirm your want to reset Firefox settings to default (Reset Firefox to default settings step 4)

safari browser logoRemove malicious extensions from Safari:

Removing browser hijackers from safari step 1 - accessing preferences

Make sure your Safari browser is active and click Safari menu, then select Preferences...

removing browser hijacker from safari step 2 - removing extensions

In the preferences window select the Extensions tab. Look for any recently installed suspicious extensions and uninstall them.

Removing browser hijackers from safari step 3 - changing homepage

In the preferences window select General tab and make sure that your homepage is set to a preferred URL, if its altered by a browser hijacker - change it.

removing browser hijackers from safari step 4 - changing the default Internet search engine

In the preferences window select Search tab and make sure that your preferred Internet search engine is selected.

Optional method:

Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...

resetting safari step 1

In the opened window select all history and click the Clear History button.

resetting safari step 2

Microsoft Edge (Chromium) logoRemove malicious extensions from Microsoft Edge:

Removing browser hijackers from Microsoft Edge step 1

Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge), select "Extensions". Locate any recently-installed suspicious browser add-ons, and remove them.

Change your homepage and new tab settings:

Removing browser hijackers from Microsoft Edge step 2

Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge), select "Settings". In the "On startup" section look for the name of the browser hijacker and click "Disable".

Change your default Internet search engine:

Removing browser hijackers from Microsoft Edge step 3

To change your default search engine in Microsoft Edge: Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge), select "Privacy and services", scroll to bottom of the page and select "Address bar". In the "Search engines used in address bar" section look for the name of the unwanted Internet search engine, when located click the "Disable" button near it. Alternatively you can click on "Manage search engines", in the opened menu look for unwanted Internet search engine. Click on the puzzle icon Microsoft Edge (Chromium) puzzle icon near it and select "Disable".

Optional method:

If you continue to have problems with removal of the zoo toolbar, reset your Microsoft Edge browser settings. Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge) and select Settings.

Microsoft Edge (Chromium) reset step 1

In the opened settings menu select Reset settings.

Microsoft Edge (Chromium) reset step 2

Select Restore settings to their default values. In the opened window, confirm that you wish to reset Microsoft Edge settings to default by clicking the Reset button.

Microsoft Edge (Chromium) reset step 3

  • If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.

Summary:

declining installation of browser hijackers while downloading free software sampleA browser hijacker is a type of adware infection that modifies Internet browser settings by assigning the homepage and default Internet search engine settings to some other (unwanted) website URL. Commonly, this type of adware infiltrates operating systems through free software downloads. If your download is managed by a download client, ensure that you decline offers to install advertised toolbars or applications that seek to change your homepage and default Internet search engine settings.

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

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Software uninstall instructions
Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
Zoo Toolbar QR code
Scan this QR code to have an easy access removal guide of Zoo Toolbar on your mobile device.
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