How to remove the ExtendedLibrary adware from your operating system?

Also Known As: Ads by ExtendedLibrary
Type: Mac Virus
Distribution: Low
Damage level: Medium

How to remove ExtendedLibrary adware from Mac?

What is ExtendedLibrary?

ExtendedLibrary is an adware-type application with browser hijacker traits. Hence, this app not only delivers intrusive advertisements but also makes modifications to browsers - in order to promote illegitimate search engines. Additionally, most adware-types and browser hijackers collect browsing-related information. Due to the dubious methods employed to distribute ExtendedLibrary, it is deemed to be a PUA (Potentially Unwanted Application) as well.

ExtendedLibrary adware

Adware enables the placement of pop-ups, banners, surveys, full-page and other intrusive ads - typically, on any visited website. The delivered adverts severely diminish the browsing experience, as they overlay webpage content and limit the browsing speed. Furthermore, when intrusive advertisements are clicked, they redirect to various untrustworthy/malicious pages and some can even stealthily download/install software (e.g. PUAs). Browser hijackers assign the addresses of fake search engines as browsers' homepage, default search engine and new tab/widow URLs. Therefore, with a browser hijacker installed: every single search query typed into the URL bar and new browser tab/window opened - redirect to the promoted address. Illegitimate search engines are usually unable to generate search results, so they tend to redirect (or cause redirection chains leading) to Yahoo, Bing, Google and other genuine ones. Recovering a hijacked browser is impossible without removing the software affecting it. Since browser hijackers can deny access to the browser's settings and/or undo any changes users attempt to make to their browsers. As mentioned in the introduction, most PUAs have data tracking abilities. They can monitor browsing activity (URLs visited, pages viewed, search queries typed, etc) and gather personal information extracted from it (IP addresses, geolocations and other details). This sensitive data is then shared with and/or sold to third parties (potentially, cyber criminals), likewise seeking to misuse it for profit. In summary, presence of unwanted software on devices can lead to system infections, financial losses, serious privacy issues and even identity theft. To ensure device and user safety, all suspect applications and browser extensions/plug-ins must be eliminated immediately upon detection.

Threat Summary:
Name Ads by ExtendedLibrary
Threat Type Adware, Mac malware, Mac virus
Detection Names Avast (MacOS:AdAgent-L [Adw]), Fortinet (Adware/Adload!OSX), ESET-NOD32 (A Variant Of OSX/Adware.Synataeb.C), Kaspersky (Not-a-virus:HEUR:AdWare.OSX.Adload.i), Full List (VirusTotal)
Additional Information This application belongs to Adload malware family.
Symptoms Your Mac becomes slower than normal, you see unwanted pop-up ads, you are redirected to dubious websites.
Distribution methods Deceptive pop-up ads, free software installers (bundling), fake Flash Player installers, torrent file downloads.
Damage Internet browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious websites, loss of private information.
Malware Removal (Mac)

To eliminate possible malware infections, scan your Mac with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
▼ Download Combo Cleaner for Mac
To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

ExtendedProcesserDynamicImprovmentGeneralSection and NetModuleSearch are some examples of other adware-type apps. They appear legitimate and harmless. Users are enticed into download/installation with offers of various "useful" and "advantageous" functionalities. However, the advertised features are rarely operational. In fact, this is true of practically all PUAs. Functionality and user safety are irrelevant, as the only goal of unwanted software is to generate revenue for the developers. PUAs are designed to deliver intrusive advert campaigns, modify browsers, cause redirects and gather private information.

How did ExtendedLibrary install on my computer?

PUAs are distributed via download/installation setups of other products. This deceptive marketing technique of packing ordinary software with unwanted or malicious additions - is termed "bundling". Rushed download/installation processes (e.g. ignored terms, skipped steps and sections, etc.) - increase the risk of unintentionally allowing bundled content into the system. Select PUAs have "official" download sites. Upon being clicked, intrusive ads can execute scripts to download/install such applications without user permission.

How to avoid installation of potentially unwanted applications?

It is recommended to research software prior to download/installation and/or purchase. All downloads must be done from official and verified sources. Untrustworthy download channels, e.g. unofficial and free file-hosting websites, Peer-to-Peer sharing networks and other third party downloaders - often bundled and/or harmful content. When downloading/installing, it is advised to read terms, study all available options, use the "Custom" or "Advanced" settings and opt-out from additional apps, tools, features, and so on. Intrusive advertisements typically appear legitimate, however they redirect to various highly questionable webpages (e.g. gambling, pornography, adult-dating, etc.). In case of encounters with adverts and/or redirects of this type, the system must be inspected and all suspicious applications and browser extensions/plug-ins - immediately removed from it. If your computer is already infected with ExtendedLibrary, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate this adware.

Pop-up window displayed once ExtendedLibrary adware installation is over:

Pop-up displayed once ExtendedLibrary installation is done

ExtendedLibrary adware installed onto the Safari browser:

ExtendedLibrary adware installed onto Safari

ExtendedLibrary adware's installation folder:

ExtendedLibrary adware install folder

Instant automatic Mac malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of Mac malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner for Mac By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

Quick menu:

Video showing how to remove ExtendedLibrary adware using Combo Cleaner:

ExtendedLibrary adware removal:

Remove ExtendedLibrary-related potentially unwanted applications from your "Applications" folder:

mac browser hijacker removal from applications folder

Click the Finder icon. In the Finder window, select "Applications". In the applications folder, look for "MPlayerX","NicePlayer", or other suspicious applications and drag them to the Trash. After removing the potentially unwanted application(s) that cause online ads, scan your Mac for any remaining unwanted components.

Remove ads by extendedlibrary related files and folders:

Finder go to folder command

Click the Finder icon, from the menu bar. Choose Go, and click Go to Folder...

step1Check for adware-generated files in the /Library/LaunchAgents folder:

removing adware from launch agents folder step 1

In the Go to Folder... bar, type: /Library/LaunchAgents

removing adware from launch agents folder step 2
In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

step2Check for adware generated files in the /Library/Application Support folder:

removing adware from application support folder step 1

In the Go to Folder... bar, type: /Library/Application Support

removing adware from application support folder step 2
In the “Application Support” folder, look for any recently-added suspicious folders. For example, “MplayerX” or “NicePlayer”, and move these folders to the Trash.

step3Check for adware-generated files in the ~/Library/LaunchAgents folder:

removing adware from ~launch agents folder step 1


In the Go to Folder bar, type: ~/Library/LaunchAgents

removing adware from ~launch agents folder step 2

In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

step4Check for adware-generated files in the /Library/LaunchDaemons folder:

removing adware from launch daemons folder step 1
In the Go to Folder... bar, type: /Library/LaunchDaemons

removing adware from launch daemons folder step 2
In the “LaunchDaemons” folder, look for recently-added suspicious files. For example “com.aoudad.net-preferences.plist”, “com.myppes.net-preferences.plist”, "com.kuklorest.net-preferences.plist”, “com.avickUpd.plist”, etc., and move them to the Trash.

step 5 Scan your Mac with Combo Cleaner:

If you have followed all the steps in the correct order you Mac should be clean of infections. To be sure your system is not infected run a scan with Combo Cleaner Antivirus. Download it HERE. After downloading the file double click combocleaner.dmg installer, in the opened window drag and drop Combo Cleaner icon on top of the Applications icon. Now open your launchpad and click on the Combo Cleaner icon. Wait until Combo Cleaner updates it's virus definition database and click "Start Combo Scan" button.

scan-with-combo-cleaner-1

Combo Cleaner will scan your Mac for malware infections. If the antivirus scan displays "no threats found" - this means that you can continue with the removal guide, otherwise it's recommended to remove any found infections before continuing.

scan-with-combo-cleaner-2

After removing files and folders generated by the adware, continue to remove rogue extensions from your Internet browsers.

Ads by ExtendedLibrary removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove ads by extendedlibrary related Safari extensions:

safari browser preferences

Open Safari browser, from the menu bar, select "Safari" and click "Preferences...".

safari extensions window

In the preferences window, select "Extensions" and look for any recently-installed suspicious extensions. When located, click the "Uninstall" button next to it/them. Note that you can safely uninstall all extensions from your Safari browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Safari.

firefox browser iconRemove malicious plug-ins from Mozilla Firefox:

Remove ads by extendedlibrary related Mozilla Firefox add-ons:

accessing mozilla firefox add-ons

Open your Mozilla Firefox browser. At the top right corner of the screen, click the "Open Menu" (three horizontal lines) button. From the opened menu, choose "Add-ons".

removing malicious add-ons from mozilla firefox

Choose the "Extensions" tab and look for any recently-installed suspicious add-ons. When located, click the "Remove" button next to it/them. Note that you can safely uninstall all extensions from your Mozilla Firefox browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Mozilla Firefox.

chrome-browser-iconRemove malicious extensions from Google Chrome:

Remove ads by extendedlibrary related Google Chrome add-ons:

removing malicious google chrome extensions step 1

Open Google Chrome and click the "Chrome menu" (three horizontal lines) button located in the top-right corner of the browser window. From the drop-down menu, choose "More Tools" and select "Extensions".

removing malicious Google Chrome extensions step 2

In the "Extensions" window, look for any recently-installed suspicious add-ons. When located, click the "Trash" button next to it/them. Note that you can safely uninstall all extensions from your Google Chrome browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Google Chrome.

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.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Removal Instructions in other languages
Malware activity

Global malware activity level today:

Medium threat activity

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

QR Code
Ads by ExtendedLibrary QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of Ads by ExtendedLibrary on your mobile device.
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