Your System Is Infected With 3 Viruses POP-UP Scam (Mac)

Also Known As: "Your System Is Infected With 3 Viruses" virus
Type: Mac Virus
Distribution: Low
Damage level: Medium

How to remove "Your System Is Infected With 3 Viruses!" from Mac?

What is "Your System Is Infected With 3 Viruses!"?

"Your System Is Infected With 3 Viruses!" is a fake alert stating that a Mac computer is infected with some viruses. This (and other) fake messages are often displayed on untrustworthy, deceptive websites that trick people into purchasing software or services. People do not generally visit these websites intentionally - they are redirected to them by potentially unwanted apps (PUAs). These are installed inadvertently without users' knowledge. Furthermore, once installed, PUAs feed users with intrusive advertisements and gather data relating to browsing habits.

Your System Is Infected With 3 Viruses! scam

Designers of the deceptive website (that displays "Your System Is Infected With 3 Viruses!") attempts to trick visitors into believing that their computers (Macs) are infected with viruses. In this case, it states that three viruses were found, however, the number of supposedly detected viruses might be different on other computers. In this example, it claims that the computer is infected with two malicious programs (malware) and one phishing/spyware infection. Additionally, one particular infection (a trojan) is called "e.tre456_worm_osx". The main purpose of this scam is to trick people into downloading software that supposedly eliminates detected viruses by clicking the "Scan Now" button. At time of research, clicking this button led to download of the Mac-Mechanic application. People are urged to download this app within five minutes and run a scan, otherwise the viruses might cause data loss or other damage. Furthermore, scammers have designed this website to seem as if it is an official Apple site. In fact, Apple has nothing do to with it. We strongly recommend against downloading any apps that are promoted using deceptive websites. The best option is to simply ignore fake virus alerts such as "Your System Is Infected With 3 Viruses!" by closing the websites that display them. If the website cannot be closed, use Activity Monitor and terminate the entire browser process or restart the computer. In any case, do not restore the closed session, since this will return you to the deceptive website, or other website that led you to it in the first place.

Most users visit these untrustworthy websites due to potentially unwanted programs installed on their computers (or browsers). PUAs cause unwanted redirects, deliver intrusive advertisements (coupons, banners, surveys, pop-ups, and others), and gather data relating to browsing activity. Typically, ads caused by unwanted apps are displayed using tools that enable placement of third party graphical content on any site. In this way, they also conceal underlying content of any visited website. Furthermore, clicking these advertisements usually results in being redirected to untrustworthy (or even malicious) websites. These ads are capable of executing scripts designed to download/install other unwanted applications (or malicious programs). In addition, PUAs continually collect data (IP addresses, search queries, URLs of visited websites, geo-locations, and so on) and share it with third parties (potentially, cyber criminals) who misuse private information to generate revenue. In summary, these apps might cause privacy problems, issues relating to browsing safety, or identity theft.

Threat Summary:
Name"Your System Is Infected With 3 Viruses" virus
Threat TypeMac malware, Mac virus
SymptomsYour Mac became slower than normal, you see unwanted pop-up ads, you get redirected to shady websites.
Distribution methodsDeceptive pop-up ads, free software installers (bundling), fake flash player installers, torrent file downloads.
DamageInternet browsing tracking (potential privacy issues), displaying of unwanted ads, redirects to shady websites, loss of private information.
Removal

To eliminate Your System Is Infected With 3 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.

The internet is full of deceptive, untrustworthy websites that display fake virus alerts, system errors, and other similar messages. Some examples of other similar websites include This Mac Is Not Secure, Your MacOS 10.12 Sierra Is Infected With 3 Viruses, and Spyware Were Found On Your Mac. Typically, these websites trick people into purchasing unnecessary software or paying for technical services/guidance. PUAs share many similarities: users often install them unintentionally, they cause unwanted redirects, deliver intrusive ads, and record data. PUAs are promoted as 'useful and legitimate', however, once installed, they cause problems and provide none of the features promised.

How did potentially unwanted applications install on my computer?

Potentially unwanted apps are usually installed via intrusive (untrustworthy) ads or when software developers employ a deceptive marketing method called "bundling". Bundling is used to trick people into installing PUAs together with other software by hiding them in "Custom", "Advanced", and other similar settings/options of the installation/download processes. In summary, information about the inclusion of unwanted apps in download/installation set-ups is not properly disclosed. Note, however, that PUAs cannot be installed without users' permission. Therefore, people who skip steps of the download/installation processes often install unwanted apps without their knowledge and without understanding the possible consequences.

How to avoid installation of potentially unwanted applications?

Remember some key points when downloading and installing software or browsing the internet. Download software from official (trustworthy) websites or other sources. Do not use third party software downloaders/installers, unofficial websites, or other similar sources. Do not skip software download/installation steps - check all available "Custom"/"Advanced" (and other similar) settings/options and opt-out of any additionally-included unwanted apps. Remember, most online ads may seem legitimate but intrusive ads often redirect to untrustworthy websites, such as gambling, pornography, adult dating, and other potentially malicious websites. Having unwanted apps installed might also lead to intrusive ads or redirects to dubious websites. If you encounter unwanted redirects or encounter untrustworthy ads, check installed programs on your computer. Also check extensions, add-ons, and plug-ins on your browser. Remove unwanted, unknown and suspicious entries immediately. 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 on the deceptive website displaying "Your System Is Infected With 3 Viruses!" scam:

Text in the pop-up:

 

IMMEDIATE ACTION REQUIRED

 

We have detected a trojan virus (e.tre456_worm_osx) on your Mac.

 

Press OK to begin the repair process.

 


Text in the website:

 

Your system
is infected with 3 viruses!
Friday January 4, 2019 12:10 PM

 

Your Mac is infected with 3 viruses. Our security check found traces of 2 malware and 1 phishing/spyware. System damage: 28.1% - Immediate removal required!

 

The immediate removal of the viruses is required to prevent further system damage, loss of Apps, Photos or other files. Traces of 1 phishing/spyware were found on your Mac with OSX.

 

To avoid more damage click on 'Scan Now' immediately. Our deep scan will provide help immediately!

 

4 minute and 7 seconds remaining before damage is permanent.

 

Start Scan

 Appearance of "Your System Is Infected With 3 Viruses!" scam (GIF):

Appearance of Your System Is Infected With 3 Viruses! scam (GIF)

Screenshot of the "Mac-Mechanic" app installer:

mac-mechanic app installer

Screenshot of the "Mac-Mechanic" app:

mac-mechanic application

Instant automatic removal of Your System Is Infected With 3 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 System Is Infected With 3 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 system is infected with 3 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 System Is Infected With 3 Viruses" virus removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove "your system is infected with 3 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 system is infected with 3 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 system is infected with 3 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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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 System Is Infected With 3 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 System Is Infected With 3 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.