How to remove Update_3239 from a browser and computer?

Also Known As: Ads by Update_3239
Type: Mac Virus
Distribution: Moderate
Damage level: Medium

How to remove Update_3239 from Mac?

What is Update_3239?

Update_3239 is the name of adware that is designed not only to serve advertisements but also to change certain browser settings (to promote a fake search engine) and collect sensitive information. Simply said, Update_3239 functions not only as adware but also as a browser hijacker. As a rule, users do download and install apps of this type knowingly. For this reason Update_3239 is categorized as potentially unwanted application (PUA). It is known that its developers distribute alongside with another PUA called OriginalEngineSearch which is distributed via a fake installer for Adobe Flash Player.

Update_3239 adware

Like most apps of this type, Update_3239 is designed to serve advertisements (e.g., banners, coupons, surveys, pop-up ads). Usually adware-type applications serve advertisements that are designed to promote/open questionable websites and/or even cause unwanted downloads, installations. Also, Update_3239 changes browser settings such as the address of a default search engine, homepage and new tan to an address of some fake search engine. Most of the times users cannot remove the address that was assigned by a browser hijacker from browser settings unless they uninstall that app. One more important reason not to have Update_3239 installed on a browser and/or computer is because it can collect information such as passwords, telephone numbers, credit card details and some other sensitive information. Such information could be misused to steal personal accounts, identities, make fraudulent purchases, transactions, it could be sold to third parties (potentially cyber criminals) and/or misused for other malicious purposes.

Threat Summary:
Name Ads by Update_3239
Threat Type Adware, Mac malware, Mac virus
Detection Names Avast (MacOS:AdAgent-L [Adw]), AVG (MacOS:AdAgent-L [Adw]), ESET-NOD32 (Multiple Detections), Kaspersky (Not-a-virus:HEUR:AdWare.OSX.Adload.h), 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.
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To summarize, users who have Update_3239 installed on a browser and computer could become victims of identity theft, lose access to various accounts, suffer monetary loss, and/or have other problems related to online privacy, browsing safety, etc. Like most apps of this type, it is useless to their users and can be the reason behind a variety of problems. More examples of apps like Update_3239 are AccessibleSkill and LearningActivity, MarketService.

How did Update_3239 install on my computer?

One of the most popular ways to distribute/promote PUAs is to include them in various download and/or installation setups as additional offers. This distribution method is called "bundling". Typically, users can decline offers to download and/or install included apps via "Advanced", "Custom", or other settings of setups (or by unticking available checkboxes). However, not all users do that. When they leave the aforementioned settings unchanged, they download and/or install PUAs alongside with programs that they download and/or install intentionally. In this particular case users get tricked into installing Update_3239 when they use a fake installer for Adobe Flash Player which is used to distribute not only Update_3239 but also the OriginalEngineSearch app. Additionally, unwanted downloads and/or installations can be caused by clicking deceptive advertisements that are designed to execute certain scripts. It is worthwhile to mention that in most cases such ads appear on questionable pages.

How to avoid installation of potentially unwanted applications?

Programs, files should be downloaded from official pages and via direct links. Other sources, tools like Peer-to-Peer networks (e.g., torrent clients, eMule), unofficial sites, third party downloaders, etc., can be used as tools to promote/distribute potentially unwanted, or even malicious apps. Download and/or installation setups that have "Custom", "Advanced" (or other) settings should be analyzed - it is common that they are used to distribute unwanted apps. Simply said, it is recommended to check setups for offers to download and/or install unwanted apps before finishing download and/or installation processes. Additionally, it is advised not to trust (click) advertisements that are displayed on questionable websites, more often than not those ads are designed to open other shady pages. In some cases they can be designed to cause unwanted downloads and/or installations by running certain scripts. Any suspicious, unwanted apps (add-ons, extensions, plug-ins) that are installed on a browser should be eliminated. Programs of this kind that are installed on a computer should be removed too. If your computer is already infected with Update_3239, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate this adware.

Pop-up window displayed once Update_3239 installation is finished:

update 3239 adware pop-up displayed once installation is done

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 adware and browser hijackers from a Mac computer:

Update_3239 adware removal:

Remove Update_3239-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 update_3239 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 Update_3239 removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove ads by update_3239 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 update_3239 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 update_3239 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 Update_3239 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 Update_3239 on your mobile device.
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