Do not trust the greacore.com scam website

Also Known As: greacore.com pop-up
Type: Mac Virus
Distribution: Moderate
Damage level: Medium

How to remove redirects to greacore[.]com from Mac computers

What is greacore[.]com?

greacore[.]com is a scam website, which makes deceptive claims to promote dubious applications. It states that users' iPhones have been damaged by two viruses and, to remove them, they must download and install a recommended app. These schemes are commonly used to distribute fake anti-virus tools, adware, browser hijackers and other Potentially Unwanted Applications (PUAs). In some cases, they even promote Trojans, ransomware and other malware. Typically, deceptive/scam sites are accessed through redirects caused by intrusive advertisements or PUAs.

greacore[.]com scam

greacore[.]com primarily targets iPhone users, however it might also be accessed (i.e., users are redirected to it) via other Apple products. The scheme states that the device has been heavily damaged by two nonexistent viruses. Supposedly, users' iPhones have already suffered 28.1% damage. If the fake threats are not removed, they apparently might corrupt the device's SIM card, contact lists, photos, applications and other data. These bogus viruses have allegedly originated from adult-oriented websites that the users have recently visited. To prevent further damage, the scam instructs people to download/install and run the promoted application. Note that greacore[.]com is simply a scam and must not be trusted. No website can detect threats/issues present on browsers/systems, and any that make such claims are scams. Furthermore, software endorsed by them is usually nonoperational, untrusted and can even be malicious.

PUAs can cause redirects to various untrusted and malicious web pages, however, they can have other capabilities. They can deliver pop-ups, banners, coupons, surveys and other intrusive advertisements. Once these ads are clicked, they redirect to dangerous sites and can execute scripts to stealthily download/install rogue software (e.g. PUAs). Other types of PUAs can modify browsers to promote fake search engines. Furthermore, most PUAs (regardless of type) can track data. They can monitor browsing habits (browsing and search engine histories) and gather personal information (IP addresses, geolocations and other sensitive details). The collected data is often shared with third parties seeking to misuse it for profit. In summary, the presence of PUAs on systems can lead to serious infiltration and infections, financial issues, privacy issues and identity theft. To ensure device and user safety, remove all suspicious applications and browser extensions/plug-ins immediately upon detection.

Threat Summary:
Name greacore.com pop-up
Threat Type Phishing, Scam, Mac malware, Mac virus.
Fake Claim Scam claims that visitors' devices are infected.
Serving IP Address 64.227.11.5
Promoted Unwanted Application Scam promotes various untrustworthy apps.
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.

apple-warning.comapple-online-guard.comguardapl.com, and originalsecureus.com are some examples of deceptive websites targeting iPhone users. Online scams employ social engineering and scare tactics to trick users into performing certain actions (e.g. to download/install and purchase untrusted/malicious content). Popular scam models include (but are not limited to) warnings that the device is infected, alerts that an essential piece of software is outdated, prize giveaways, "amazing" offers/deals, and so on. These schemes have just one purpose: to generate revenue for the scammers/cyber criminals behind them. There are thousands of websites similar to greacore[.]com on the web. Therefore, exercise caution when browsing.

How did potentially unwanted applications install on my computer?

Some PUAs have "official" download web pages. These apps can also spread via the download/installation set-ups of other software. This deceptive marketing method of packing regular products with unwanted or malicious additions is called "bundling". Rushing through download/installation processes (e.g. skipping steps and sections, using pre-set options, etc.) increases the risk of unintentionally allowing bundled content onto the system. When clicked, intrusive ads can execute scripts to download/install rogue applications without users' consent.

How to avoid installation of potentially unwanted applications

All products should be researched carefully, prior to download/installation. You are advised to use only official and verified download channels. Unofficial and free file-hosting websites, P2P sharing networks (BitTorrent, eMule, Gnutella, etc.) and other third party downloaders are untrusted and can offer deceptive/bundle content. Download/Installation processes should be treated with caution. Read the terms, study all possible options, use the "Custom/Advanced" settings and opt-out of supplementary apps, tools, features, etc. Intrusive ads typically seem normal and harmless, however, they can redirect to highly dubious pages (e.g. pornography, gambling, adult-dating and others). If you encounter these advertisements/redirects, check the system and immediately remove all suspect applications and browser extensions/plug-ins. 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 by greacore[.]com:

Your system is heavily damaged by Two viruses!

 

We detect that your Apple iPhone is 28.1% DAMAGED because of Two harmful viruses from recent adult sites. Soon it will damage your phone's SIM card and will corrupt your contacts, photos, data, applications , etc.

 

If you do not remove the virus now , it will cause severe damage to your phone . Here's what you NEED to do (step by step ) :

 

Step 1: Tap the button and install App for free!

Step 2: Open the App to speed up and fix your browser now!

 

WARNING!

This Apple iPhone is infected with viruses and your browser is seriously damaged. You need to remove viruses and make corrections immediately.

It is necessary to remove and fix now.

 

Don't close this window.

OK

Another example of a scam message displayed by greacore[.]com website:

greacore.com pop-up scam (2020-07-24)

Text presented within:

Your system is heavily damaged by Two viruses!
We detect that your Apple iPhone is 28.1% DAMAGED because of Two harmful viruses from recent adult sites. Soon it will damage your phone's SIM card and will corrupt your contacts, photos, data, applications , etc.

If you do not remove the virus now , it will cause severe damage to your phone . Here's what you NEED to do (step by step ) :

Step 1: Tap the button and install App for free!

Step 2: Open the App to spread up and fix your browser now!

REPAIR FAST NOW

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 greacore.com 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.

greacore.com pop-up removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove greacore.com 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 greacore.com 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 greacore.com 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
greacore.com 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 greacore.com pop-up on your mobile device.
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