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How to uninstall the ExtendedField adware?

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

How to remove ExtendedField adware from Mac?

What is ExtendedField?

ExtendedField is a piece of rogue software. It is classified as adware and has browser hijacker traits. ExtendedField operates by delivering intrusive advertisement campaigns and modifying browser settings to promote fake search engines. Since most users download/install ExtendedField unintentionally, it is also categorized as a PUA (Potentially Unwanted Application). Additionally, apps within this category (adware and browser hijackers included) typically collect browsing-related and other sensitive information. It is noteworthy that ExtendedField has been observed being distributed via fake Adobe Flash Player updates. Illegitimate software updaters/installers are notorious for proliferating PUAs and even malware (e.g., trojans, ransomware, etc.).

Pop-up displayed when ExtendedField adware is installed onto the system

Adware delivers pop-ups, banners, surveys, coupons, full-page/full-screen, and other intrusive adverts. This third-party graphical content is typically displayed on any visited website and/or different interfaces. Aside from severely crippling the browsing experience (by limiting webpage visibility and slowing down browsing speed), the delivered ads endanger device and user safety. Intrusive advertisements promote (redirect to) various sale-based, unreliable, misleading, deceptive/scam, compromised, and malicious sites. Furthermore, some of these ads can be triggered (by being clicked) to execute scripts designed to download/install software (e.g., PUAs) without user permission.

Browser hijackers assign fake web searcher addresses as browsers' homepage, default search engine, and new tab/window URLs. Hence, with such a piece of software installed: every new browser tab/window opened and search query typed into the URL bar - redirect to the promoted address. Illegitimate search engines usually cannot provide search results, so they redirect to Google, Yahoo, Bing, and other genuine ones. Browser hijackers can reset any changes users try to make to their browsers and/or restrict/deny access to the browser settings outright. Therefore, recovering a hijacked browser is impossible without removing the software affecting it.

What is more, most PUAs have data tracking abilities. Information of interest includes: URLs visited, pages viewed, search queries typed, IP addresses/ geolocations, personally identifiable details, etc. The collected data is then shared with and/or sold to third-parties (potentially, cyber criminals). In summary, the presence of unwanted apps on devices can lead to system infections, severe privacy issues, financial losses, and even identity theft. To protect device integrity and user privacy, all suspicious applications and browser extensions/plug-ins must be eliminated immediately upon detection.

Threat Summary:
Name Ads by ExtendedField
Threat Type Adware, Mac malware, Mac virus
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.

OriginalUnitValueBoostConsoleFlexibleSectorSimpleProjectSearch - are some examples of adware-type applications. They look legitimate and harmless, enticing users into download/installation with various "useful" features. However, the functions seldom work as advertised, and in most cases - they do not work at all. In fact, this is true of nearly all PUAs. The sole goal of unwanted software is to generate revenue for the developers. Therefore, instead of delivering on any promises, PUAs can run intrusive advertisement campaigns, hijack browsers, cause redirects, and collect private information.

How did ExtendedField install on my computer?

PUAs are distributed through download/installation setups of other products. This false marketing technique of packing regular software with unwanted or malicious additions - is termed "bundling". Rushed download/installation processes (e.g., ignored terms, skipped steps, etc.) increase the risk of unintentionally allowing bundled content into the device. Once clicked on, intrusive adverts can execute scripts to stealthily download/install PUAs. Some of these applications may also have "official" promotional/download pages.

How to avoid installation of potentially unwanted applications?

It is recommended to research software before download/installation and/or purchase. Additionally, all downloads must be done from official and verified sources. Since dubious download channels, e.g., unofficial and free file-hosting websites, Peer-to-Peer sharing networks, and other third-party downloaders - often offer harmful and bundled content. When downloading/installing, it is advised to read terms, study possible options, use the "Custom/Advanced" settings, and opt-out from supplementary apps, tools, features, and so forth. Intrusive advertisements appear ordinary and innocuous; however, they redirect to highly questionable sites (e.g., gambling, pornography, adult-dating, etc.). In case of encounters with such adverts and/or redirects, the device must be checked and all suspect applications and browser extensions/plug-ins detected - removed from it without delay. If your computer is already infected with ExtendedField, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate this adware.

Text presented in the pop-up window displayed when ExtendedField adware is present on the system:

"ExtendedFieldd" will damage your computer.

 

This file was downloaded on an unknown date.

 

OK
Show in Finder

Delusive installer (fake Flash Player updater) promoting ExtendedField adware;

First installation step:

Delusive installer used to promote ExtendedField adware (step 1)

Second installation step:

Delusive installer used to promote ExtendedField adware (step 2)

Files related to the ExtendedField adware that need to be removed:

  • ~/Library/Application Support/.[random_string]/Services/com.ExtendedField.service.app
  • ~/Library/LaunchAgents/com.ExtendedField.service.plist
  • /Library/Application Support/.[random_string]/System/com.ExtendedField.system
  • /Library/LaunchDaemons/com.ExtendedField.system.plist

IMPORTANT NOTE! In some cases malicious applications like ExtendedField alter system proxy settings, thereby causing unwanted redirects to a variety of questionable websites.

The redirects are likely to remain even after removing the application itself. Thus, you'll have to restore them manually.

Step 1: Click on the gear icon in the Dock to navigate to the system settings. If the icon is not present in the Dock, you can find it in the Launchpad.

Changing proxy settings - navigate to the system settings

Step 2: Navigate to the Network settings.

Changing proxy settings - navigate to the network settings

Step 3: Select the connected network and click "Advanced...".

Changing proxy settings - select the connected network and click Advanced...

Step 4: Click on the "Proxies" tab and untick all the protocols. You should also set the settings of each protocol to default - "*.local, 169.254/16".

Changing proxy settings - untick all the options and set their settings to default

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 ExtendedField adware using Combo Cleaner:

ExtendedField adware removal:

Remove ExtendedField-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 extendedfield 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 ExtendedField removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove ads by extendedfield 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 extendedfield 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 extendedfield 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.

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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.

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 ExtendedField 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 ExtendedField on your mobile device.
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