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How to uninstall the Cookie Muncher browser hijacker

Also Known As: cookiemuncher.org redirect
Damage level: Medium

What is Cookie Muncher?

Cookie Muncher is a browser hijacker which assigns certain browser settings to cookiemuncher.org, the address of a fake search engine. As well as promoting fake search engines, these apps also collect browsing-related (and other) data.

Browser hijackers are categorized as potentially unwanted applications (PUAs), since people often download and install them unintentionally.

cookiemuncher.org browser hijacker displays results by yahoo

Like most browser hijackers, Cookie Muncher promotes its associated fake search engine by changing settings such as the address of the default search engine, homepage, and new tab. In this case, it assigns them to cookiemuncher.org.

Therefore, users who have browsers hijacked by Cookie Muncher are forced to visit cookiemuncher.org when they open a browser/new window, new tab or search by entering search queries into the URL bar. Most fake search engines do not generate unique search results, and simply provide results generated by other, often legitimate, search engines.

When used, cookiemuncher.org displays results generated by Yahoo (it redirects to search.yahoo.com). Browser hijackers often prevent users from changing/undoing the aforementioned settings unless they uninstall the rogue software. To remove cookiemuncher.org from the settings, users must remove Cookie Muncher.

Furthermore, browser hijackers often collect browsing data and other information. In most cases, they gather details such as IP addresses, geolocations, addresses of visited websites, entered search queries, and so on, however, some browser hijackers might be capable of accessing private, sensitive details.

Developers sell the information to third parties (potentially, cyber criminals) who misuse it to generate revenue in other ways.

Therefore, users might experience problems relating to browsing safety, online privacy or even become victims of identity theft. For these reasons, you are advised against trusting apps such as Cookie Muncher and you should uninstall all browser hijackers immediately.

Threat Summary:
Name Cookie Muncher
Threat Type Browser Hijacker, Redirect, Search Hijacker, Toolbar, Unwanted New Tab.
Browser Extension(s) Cookie Muncher
Supposed Functionality Cookie Muncher supposedly removes cookies in one click.
Promoted URL cookiemuncher.org
Serving IP Address (cookiemuncher.org) 104.27.145.163
Affected Browser Settings Homepage, new tab URL, default search engine.
Symptoms Manipulated internet browser settings (homepage, default internet search engine, new tab settings). Users are forced to visit the hijacker's website and search the internet using their search engines.
Distribution methods Deceptive pop-up ads, free software installers (bundling), fake Flash Player installers.
Damage Internet browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious websites.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
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Examples of other browser hijackers are Fantasic Movies, History Hide and Translations Instant. Rather than being useful and operating as advertised, most browser hijackers promote fake search engines and gather information. These apps are useless and simply cause problems.

How did Cookie Muncher install on my computer?

Frequently, unwanted apps such as Cookie Muncher are downloaded and installed through dubious advertisements, which users intentionally (or unintentionally) click, or during download/installation processes of other software. It the latter case, this happens when developers include unwanted apps into set-ups of regular programs and do not disclose the information properly.

Generally, offers to download and install additional apps are hidden in "Custom", "Advanced", and other similar settings of the set-ups.

When people fail to check and change the aforementioned settings, they allow PUAs to infiltrate, This distribution method is called "bundling". If clicked, untrusted ads also cause unwanted downloads and installations when they execute certain scripts.

How to avoid installation of potentially unwanted applications

You are advised to download software from official websites and via direct download links. Other sources and tools such as third party downloaders and installers, Peer-to-Peer networks (e.g., eMule, torrent clients), unofficial websites should can be used to distribute PUAs or even malicious software.

Check all download/installation settings such as "Custom" and "Advanced" and decline offers to download or install various potentially unwanted apps. Do not click advertisements that are displayed on dubious web pages, since they tend to open other dubious pages or cause unwanted downloads and installations.

These ads might also appear on legitimate pages. If there is reason to believe that a PUA is already installed, check the browser for unwanted, unknown extensions, add-ons and plug-ins, and remove them. The same should be applied to programs of this kind that are installed on the operating system.

If your computer is already infected with Cookie Muncher, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate this browser hijacker.

Website promoting Cookie Muncher browser hijacker:

Website used to promote Cookie Muncher browser hijacker

Another screenshot of a page promoting Cookie Muncher browser hijacker:

cookie muncher browser hijacker promoter

Fake chat promoting Cookie Muncher:

fake chat promoting cookie muncher unwanted app

Notification from y2mate.com promoting Cookie Muncher:

browser notification delivered by y2mate.com promoting cookie muncher

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Quick menu:

Cookie Muncher browser hijacker 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.

cookiemuncher.org browser hijacker uninstall via Control Panel

In the uninstall programs window: look for any recently installed suspicious applications (for example, "Cookie Muncher"), select these entries and click "Uninstall" or "Remove".

After uninstalling the potentially unwanted applications that cause browser redirects to the cookiemuncher.org website, scan your computer for any remaining unwanted components. To scan your computer, use recommended malware removal software.

Cookie Muncher browser hijacker removal from Internet browsers:

Video showing how to remove browser redirects:

Internet Explorer logoRemove malicious add-ons from Internet Explorer:

Removing cookiemuncher.org related Internet Explorer extensions

Click the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer), select "Manage Add-ons". Look for any recently installed suspicious extensions, select these entries and click "Remove".

Change your homepage:

Removing cookiemuncher.org from Internet Explorer homepage

Click the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer), select "Internet Options", in the opened window, remove hxxp://cookiemuncher.org 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 cookiemuncher.org from Internet Explorer default search engine

Click 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 "Cookie Muncher".

Optional method:

If you continue to have problems with removal of the cookiemuncher.org redirect, 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 cookiemuncher.org related Google Chrome extensions

Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome), select "More tools" and click "Extensions". Locate "Cookie Muncher" and other recently-installed suspicious browser add-ons, and remove them.

Change your homepage:

Removing cookiemuncher.org from Google Chrome homepage

Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome), select "Settings". In the "On startup" section, disable "Cookie Muncher", look for a browser hijacker URL (hxxp://www.cookiemuncher.org) below the “Open a specific or set of pages” option. If present, click on the three vertical dots icon and select “Remove”.

Change your default search engine:

Removing cookiemuncher.org from Google Chrome default search engine

To change your default search engine in Google Chrome: Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome), select "Settings", in the "Search engine" section, click "Manage search engines...", in the opened list look for "cookiemuncher.org", when located click the three vertical dots near this URL and select "Remove from list".

Optional method:

If you continue to have problems with removal of the cookiemuncher.org redirect, 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 plug-ins from Mozilla Firefox:

Removing cookiemuncher.org related Mozilla Firefox extensions

Click the Firefox menu firefox menu icon (at the top right corner of the main window), select "Add-ons". Click on "Extensions" and remove "Cookie Muncher", as well as all other recently installed browser plug-ins.

Change your homepage:

Removing cookiemuncher.org from Mozilla Firefox homepage

To reset your homepage, click the Firefox menu firefox menu icon (at the top right corner of the main window), then select "Options", in the opened window disable "Cookie Muncher", remove hxxp://cookiemuncher.org and enter your preferred domain, which will open each time you start Mozilla Firefox.

Change your default search engine:

Removing cookiemuncher.org 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: "extensionControlled"
Set both results to "false" by either double-clicking each entry or clicking the Mozilla Firefox switch about:config entry button button.

Optional method:

Computer users who have problems with cookiemuncher.org redirect 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 cookiemuncher.org redirect, 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
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