Avoid being scammed by centersourceoffreeupgrades.best

Also Known As: centersourceoffreeupgrades.best pop-up
Type: Mac Virus
Distribution: Low
Damage level: Medium

How to remove redirects to centersourceoffreeupgrades[.]best from Mac computers

What is centersourceoffreeupgrades[.]best?

centersourceoffreeupgrades[.]best is a deceptive website claiming that visitors' Adobe Flash Player software is out-of-date. The purpose of this scam is to trick users into downloading/installing a fake Flash Player updater. Rogue software updates are commonly used to promote various untrustworthy and even malicious content. For example, Potentially Unwanted Applications (PUAs) such as adware and browser hijackers. They can even proliferate malware (e.g. trojans, ransomware, etc.). Typically, scam pages are accessed via redirects caused by intrusive advertisements and/or PUAs already infiltrated into the system.

centersourceoffreeupgrades[.]best scam

There are several variants of this scam run on centersourceoffreeupgrades[.]best. The scheme appears via pop-ups, stating that visitors' Adobe Flash Player software is outdated and urges them to update it immediately. To elaborate, one variant displays a pop-up window making such claims. After this window is closed, several more pop-ups are displayed in quick succession. Each repeat thematically identical messages. The large pop-up in the center of the page informs users that Flash Player is a crucial browser plug-in, which enables users to view/interact with media (audio, video, animation and online games). Since Flash Player supposedly lacks the latest security updates, it has been blocked and any continued use requires installation of the latest updates. This window is then concealed with another pop-up, which states that updates with critical security fixes have been prepared for installation. It is stated in this window that the user's anti-virus software must allow the installation update, implying that the anti-virus software must be deactivated. All of the pop-ups have "Install/Update" buttons, which initiate download of the fake updater. When any is clicked, the fraudulent updates are downloaded and centersourceoffreeupgrades[.]best provides installation instructions. These updates are bogus. Installing them will not update Adobe Flash Player - instead, it will allow untrustworthy and/or malicious content onto the system. Therefore, you are strongly advised against trusting centersourceoffreeupgrades[.]best and other sites making similar claims.

PUAs may seem legitimate and useful, with a wide range of "useful" features. In fact these functions are often nonoperational. PUAs have many harmful capabilities including force-opening deceptive, sale-based, untrustworthy, rogue, compromised and malicious web pages. They can also operate as adware (i.e., delivering intrusive advertisements such as pop-ups, banners, coupons, surveys, etc.). The resultant ads are more than just a nuisance - they pose a threat by generating redirects to dangerous websites and through their capability to stealthily download/install bogus content. Other PUAs are classified as browser hijackers, since they make unauthorized changes to browsers, restrict/deny access to settings and promote fake search engines. PUAs often track data. They can record browsing activity (URLs visited, search queries types, etc.) and collect users' personal information (IP addresses, geolocations and other details). This sensitive data is then be shared with third parties (potentially, cyber criminals) intent on misusing it for financial gain. The sole purpose of all PUAs is to generate profit for the developers at users' expense. In summary, unwanted apps can cause browser/system infiltration and infections, lead to serious privacy issues, financial loss and even identity theft. You are advised to immediately remove all suspect applications and/or browser extensions to ensure device/user safety.

Threat Summary:
Name centersourceoffreeupgrades.best pop-up
Threat Type Phishing, Scam, Mac malware, Mac virus.
Fake Claim Scam claims visitors' Adobe Flash Player is outdated.
Detection Names (fake updater)
Avast (MacOS:Bundlore-ED [Adw]), BitDefender (Adware.MAC.Bundlore.DPS), Emsisoft (Adware.MAC.Bundlore.DPS (B)), Kaspersky (HEUR:Trojan-Downloader.OSX.Shlayer.a), Full List (VirusTotal)
Promoted Unwanted Application Promotes various fake Flash updaters.
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.

theworldofcontents.infomainplaceupgradesfree.info and startmostnewestprogram.icu are examples of other sites running identical scam models as that used by centersourceoffreeupgrades[.]best. Social engineering and scare tactics are employed to further these schemes. The goal is to encourage visitors into performing certain actions. For example, downloading/installing and/or purchasing untrustworthy/malicious software, calling expensive and fake 'tech support' numbers, revealing personal details, making monetary transactions, and many others. The underlying purpose of these scams is to generate revenue for the scammers behind them. The internet is rife with deceptive web pages and you are advised to exercise great caution when browsing to avoid falling victim to scams.

How did potentially unwanted applications install on my computer?

Fake updaters are just one mode of PUA proliferation. They are also spread via the download/install set-ups of other products. This deceptive marketing method of pre-packing normal software with unwanted or malicious content is called "bundling". Rushing download/installation processes (e.g. skipping steps, using presets, etc.) endangers devices with potential infiltration and infections. Some PUAs have "official" download web pages, which are often promoted by deceptive/scam sites. When clicked, intrusive ads can execute scripts designed to download/install PUAs without users' consent.

How to avoid installation of potentially unwanted applications

You are advised to use only official and verified download channels. Untrustworthy sources such as free file-hosting websites, P2P sharing networks (BitTorrent, eMule, Gnutella, etc.) and other third party downloaders can offer deceptive and/or bundled content for download. When downloading/installing, read the terms, explore all possible options, use the "Custom/Advanced" settings and opt-out of additional apps, tools, features and so on. Intrusive advertisements rarely seem suspicious, and yet redirect to highly dubious and rogue websites (e.g. gambling, pornography, adult-dating and others). If you encounter these ads/redirects, check the system and remove all dubious applications and/or browser extensions/plug-ins without delay. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate them.

Text presented in the initial pop-up window displayed by one variant of the centersourceoffreeupgrades[.]best scam:

Update to the latest version of Flash Player. Your current Adobe Flash Player version is out of date.

Screenshot of the second page displayed by this variant:

centersourceoffreeupgrades[.]best scam second page

Text presented in the pop-ups of this page:

Top pop-up:

 

Latest version of Flash Player is required to encode and/or decode (Play) audio files in high quality. - Click here to update for latest version.

--------

 

Center pop-up:

 

Software update
Recommended Update
For streaming and online watching
Update now
 
"Adobe Flash Player" is an essential plugin for your browser that allows you to view everything from video to games and animation on the web. The version of “Adobe Flash Player" on your system does not include the latest security updates and has been blocked.

To continue using “Adobe Flash Player", download an updated version.
Download Flash... Update

--------

 

Bottom pop-up:

 

Flash Player Update
Install latest version of Adobe Flash Player in order to continue watching.
Download 

Screenshot of the pop-up that overlays the center pop-up:

centersourceoffreeupgrades[.]best scam pop-up overlay

Text presented in this pop-up:

Adobe Flash Player Update

Updates are ready to Install

The latest version of Adobe Flash Player with critical security fixes is ready to install now
It wouldn't take long to upgrade - and you'll get all the latest improvements and fixes.

Copyright © Adobe Systems Software Ireland Ltd. All rights reserved

Adobe Flash layer Terms of Service
Note: Your antivirus software must allow to install software

No restart is required
Upgrade Save File

Screenshot of the page detailing the fake updater installation instructions:

centersourceoffreeupgrades[.]best scam fake update install instructions

Text presented in this page:

1

Go to the ‘Downloads’
Open your downloads list by
clicking on the top right corner
the ‘arrow’.

2

Open the file
Locate and double-click the file
starting with ‘Flash Player’.

3

Run the application
Confirm the installation by clicking
Continue and Install
buttons.
Type your password.

Appearance of this variant of the centersourceoffreeupgrades[.]best scam (GIF):

Appearance of centersourceoffreeupgrades[.]best scam (GIF)

Appearance of another variant of the centersourceoffreeupgrades[.]best scam (GIF):

centersourceoffreeupgrades[.]best scam second variant gif

Appearance of the third variant of the centersourceoffreeupgrades[.]best scam (GIF):

centersourceoffreeupgrades[.]best scam third variant gif

Screenshot of the fake Flash Player updates installation setup:

centersourceoffreeupgrades[.]best scam fake Flash updates installer

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:

Potentially unwanted applications removal:

Remove 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 centersourceoffreeupgrades.best pop-up 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.

centersourceoffreeupgrades.best pop-up removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove centersourceoffreeupgrades.best pop-up 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 centersourceoffreeupgrades.best pop-up 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 centersourceoffreeupgrades.best pop-up 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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Malware activity

Global malware activity level today:

Medium threat activity

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

QR Code
centersourceoffreeupgrades.best pop-up 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 centersourceoffreeupgrades.best pop-up on your mobile device.
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