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DefaultTab virus

How to remove DefaultTab – Removal Instructions

DefaultTab virus (Default Tab)

The DefaultTab virus (also found as Default Tab, or DefaultTab by Search Results LLC; though not technically a computer virus) is potential malware, categorized as a browser hijacker, and spyware. DefaultTab primarily installs to a Microsoft Windows computer and attaches to Google Chrome, Mozilla Firefox, and Microsoft Internet Explorer as a browser add-on, browser helper object (BHO), and extension without user consent alongside freeware and shareware.

DefaultTab virus

Once installed, DefaultTab and associated malware beings to change internet browser settings, including the homepage, default search engine, and browser tabs. In turn DefaultTab malware causes unwanted browser redirections to the DefaultTab Search Engine and other websites including search.conduit.com and bing.com. This also causes affected browsers to target and start up on unwanted websites when users open a new browser tab or window.

DefaultTab also assists in displaying unwanted advertisements. Advertisements associated with DefaultTab may appear as drop-down coupon ads alike Coupon Companion, scrolling menu ads, pop-up ads, pop-under ads, and even as in-text advertisements similar to Infolinks. It should be noted that advertisements are not served by DefaultTab, but instead advertisements are generated by sponsored third-parties such as BonanzaDeals that may bundle with the extension and recently installed freeware or shareware.

Victims of potential DefaultTab malware often claim that the program installed to their computer alongside other bloatware or malware such as adware and spyware without consent. One of our website visitors also stated that downloading legitimate software from download.com, allowed CNET to install unwanted software without their permission. It’s true, DefaultTab and similar hijackers such as TopArcadeHits may install alongside freeware, shareware, codecs, and even torrents. It’s recommended to avoid downloading items from websites such as download.com.

Victims of the DefaultTab virus have stated that they fear that sensitive information concerning their credit cards and identity may have been compromised. Some have claimed that they have been attacked by scam artists over the telephone who have used collected sensitive information in order to persuade unsuspecting victims to perform non-beneficial tasks, etc. While these cases are rare, DefaultTab may collect sensitive user information and distribute the data to third-party mailing and marketing lists. Most users complain of unwanted email spam, junk mail, and telephone calls from telemarketers.

DefaultTab malware removal

The DefaultTab add-on and extension has the permission to access all data on your computer and the websites you visit.

The collection of this information is a concern for cyber crimes relating to credit theft, extortion, and identity theft.

File: DefaultTabBHO.dll
Folder: C:\Users\Username\AppData\Roaming\DefaultTab\DefaultTab
Class ID: {7F6AFBF1-E065-4627-A2FD-810366367D01}

  Green Arrow Bullet   How to remove the DefaultTab virus

  1. Automatically remove DefaultTab malware – Scan for and automatically remove DefaultTab malware
  2. Manually remove DefaultTab malware – Remove/Uninstall DefaultTab and third-party malware

1. Automatic DefaultTab virus removal

Use the instructions below to automatically remove DefaultTab and third-party malware, as well as automatically remove unwanted search engines (MySearchDial) from your home page, default search engine, browser shortcuts, and other hijacked settings using free or paid versions of reputable software.

Malwarebytes Anti-Malware

1. Install the free or paid version of Malwarebytes Anti-Malware.

Purchase   Download

2. Once Malwarebytes is installed, run the program. If you are using the free version of Malwarebytes you will be prompted to update the database, make sure to do so.

3. On the first tab labeled “Scanner” select the Perform full scan option and click the Scan button to perform a full system scan. Malwarebytes will automatically detect malware infecting the computer system.

Malwarebytes Perform Full Scan

4. Once the malware scan is complete, Malwarebytes may prompt a notice stating malicious objects were detected including DefaultTab, etc. Select the malicious objects and click the Remove Selected button to completely remove the malicious files from your computer (the image below shows a file that is NOT selected) or click the Delete button to remove quarantined files.

Malwarebytes Gadgetbox


CCleaner can be used to automatically repair internet browser settings startup up settings, and uninstall stubborn DefaultTab software. You can even use CCleaner to remove ransomware, but that does not apply here.

1. Install the free or paid version of CCleaner by Piriform.

Purchase CCleaner for $24.95*   Free Download

CCleaner Analyze Cleaner

2. Once installed, open the program and navigate to Cleaner > Windows/Applications and click the Analyze button. Afterwards, click the Run Cleaner button on the bottom right of the program interface.

CCleaner Startup

3. Next, navigate to Tools > Startup and search through each tab starting from windows, internet explorer, etc., all the way to Content Menu, for additional suspicious entries and click Disable and Delete once anything is found.

4. To automatically uninstall DefaultTab and unwanted programs, navigate to the Uninstall tab and search for DefaultTab software, etc. in the list of installed programs. Uninstall the programs as selected.

2. Manual DefaultTab virus removal

Use the instructions below to manually uninstall DefaultTab using generic removal procedures. 

How to uninstall DefaultTab

1. Access Windows Start Menu and navigate to the Control Panel.

Uninstall a program

2. Click Uninstall a program or Add and remove a program.

3. In the list of installed programs, search for DefaultTab and other potentially unwanted software, including software downloaded from websites such as download.com. Once located, double click the unwanted programs or highlight them in the list and click the Uninstall button.

How to remove the DefaultTab add-on and extension

Use the instructions to remove DefaultTab add-ons, extensions, plugins, and toolbars. Please note, it may be necessary to remove third-party browser attachments.

Google Chrome

1. Click on the Customize icon (wrench or 3 bar icon) next to the address bar and navigate to Tools > Extensions.

2. Search for the DefaultTab extension and remove it by clicking the trashcan icon next to them.

Mozilla Firefox

1. Type Ctrl+Shift+A.

2. On the Extensions and Plugin search for the DefaultTab add-on and remove it.

Microsoft Internet Explorer

1. Click Tools and select Manage add-ons.

2. On the Toolbars and Extensions tab search for the DefaultTab add-on and remove it if located.

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Sean Doyle

Sean is a tech author and engineer with over 20 years of experience in cybersecurity, privacy, malware, Google Analytics, online marketing, and other topics. He is featured in several publications.

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