Your Mac Is Infected With 4 Viruses POP-UP Scam (Mac)

Also Known As: "Your Mac is infected with 4 viruses" virus
Type: Mac Virus
Distribution: Low
Damage level: Medium

How to remove "Your Mac is infected with 4 viruses" from Mac?

What is "Your Mac is infected with 4 viruses"?

"Your Mac is infected with 4 viruses" is a fake virus alert that appears when opening a scam website. Like most scams of this type, it attempts to trick people into downloading a dubious application - in this case, cleaning software for Mac computers. Typically, these websites are opened by potentially unwanted apps (PUAs) that people have installed on their browsers or computers. PUAs feed users with intrusive ads and gather data.

Your Mac is infected with 4 viruses scam

This deceptive page displays a pop-up window presented as an "Important alert". The pop-up states that the site has detected four viruses and encourages visitors to click "OK" to begin the 'repair process'. It then runs a fake virus scan that, once finished, states that the computer is infected with a number of Trojans, adware-type programs, and other viruses. The scan results are displayed in a window disguised as macOS Security Center, which urges people to remove the viruses immediately, otherwise they might cause system damage, data loss, and so on. Users are encouraged to download the latest cleaning software by clicking the "Download" button. Note that Apple has nothing to do with software promoted through this scam or with the scam itself. Do not download programs from these websites - ignore them and do not trust the statements.

As mentioned, most people end up visiting scam websites due to PUAs installed on their browsers (or computers). Note that PUAs also gather data. Once installed, they record IP addresses, URLs of visited websites, entered search queries, geolocations, and other information. Some PUAs  also record personal details. Developers share the data with other third parties who misuse it to generate revenue. Some of these third parties might be cyber criminals. Note that PUAs often display intrusive ads such as coupons, banners, surveys, pop-up ads, and so on. These conceal underlying content of visited websites and, if clicked, redirect people to untrustworthy websites or execute scripts designed to download and install other unwanted apps. PUAs can thus lead to privacy/browsing safety issues or even cause identity theft. We strongly recommend that you remove all PUAs from your browsers/computers immediately.

Threat Summary:
Name "Your Mac is infected with 4 viruses" virus
Threat Type Mac malware, Mac virus.
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, potentially unwanted applications.
Damage Internet browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious websites, loss of private information, installation of potentially unwanted applications.
Removal

To eliminate Your Mac is infected with 4 viruses virus our malware researchers recommend scanning your computer with Combo Cleaner.
▼ Download Combo Cleaner
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Combo Cleaner.

"Your Mac is infected with 4 viruses" is just one of many scams designed to trick people into downloading unwanted apps. Other examples are "Mac OS X Is Infected (4) By Viruses", "APPLE.COM RECOMMENDS", and "Your OSX 10.11 El Capitan Is Infected With 3 Viruses!". Apps promoted through these scams should not be trusted, downloaded, or installed.

How did potentially unwanted applications install on my computer?

Typically, people install PUAs unintentionally. Inadvertent downloads and installations usually happen when users click intrusive ads, or software developers use a deceptive marketing method called "bundling". They use this method to trick people into downloading and installing unwanted apps with other software by hiding unwanted apps in "Custom", "Advanced", and other similar settings of software download/installation set-ups. Information regarding the inclusion of PUAs in set-ups is not properly disclosed. Furthermore, many people download and install these apps inadvertently when they skip download/installation steps without checking the available settings.

How to avoid installation of potentially unwanted applications?

Download software using legitimate, official, and trustworthy sources. Avoid using third party software downloaders, Peer-to-Peer networks such as torrents, eMule, unofficial sites and other similar sources. Install software with care, do not finish any installation without first checking all available "Custom", "Advanced" and other settings, and dismissing offers to download/install unwanted apps. Intrusive ads displayed on dubious pages often seem legitimate, however, they cause unwanted redirects to websites such as gambling, pornography, adult dating, etc. If you experience these redirects and ads, check your browser for any suspicious extensions, plug-ins, or add-ons, and remove all unwanted entries. Also apply this to unwanted programs installed on your computer. 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 first pop-up window displayed by this scam:

Important alert
We have detected 4 viruses in your Mac. Press OK to begin the repair process.
macOS is being scanner
Software scan may take some time, depending on the type of your Mac.

Screenshot of "Your Mac is infected with 4 viruses" scam displaying fake virus scan results:

your mac is infected with 4 viruses fake scan results

Text presented macOS Security Center pop-up window:

Your Mac is infected with 4 viruses
The removal of viruses is required immediately to prevent further system damage, loss of programs, photos, videos or other files.
Click ´Downloadª to download and install the newest cleaning software on your Mac.

Name Infected file Type Threat level
macOS/Hoax.Renos.HX /Macintosh HD/Users/Library/App.. Virus Medium
Trojan IRC/Backdor.SdBot4.FRV /Macintosh HD/Users/Library/CoreD.. Virus Medium
Adware.macOS.Look2me.ab /Macintosh HD/Users/All/Contain.. Virus Critical
Trojan.Qoologic ñ Key Logger /Macintosh HD/Users/Library/Xcode Virus High

Instant automatic removal of Your Mac is infected with 4 viruses virus: 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 Your Mac is infected with 4 viruses virus. 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. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Combo Cleaner.

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 "your mac is infected with 4 viruses" virus 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.

"Your Mac is infected with 4 viruses" virus removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove "your mac is infected with 4 viruses" virus 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 "your mac is infected with 4 viruses" virus 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 "your mac is infected with 4 viruses" virus 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 virus and spyware activity level today:

Medium threat activity
Medium

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

QR Code
Your Mac is infected with 4 viruses virus 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 "Your Mac is infected with 4 viruses" virus on your mobile device.
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Platform: macOS

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Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Combo Cleaner.