Your OSX 10.11 El Capitan Is Infected With 3 Viruses! POP-UP Scam (Mac)

Also Known As: "Your OSX 10.11 El Capitan Is Infected With 3 Viruses!" virus
Type: Mac Virus
Distribution: Low
Damage level: Medium

How to remove "Your OSX 10.11 El Capitan Is Infected With 3 Viruses!" from Mac?

What is "Your OSX 10.11 El Capitan Is Infected With 3 Viruses!"?

"Your OSX 10.11 El Capitan Is Infected With 3 Viruses!" is one of many scams designed to trick Mac users into believing that their computers are infected with several (in this case three) viruses. This one is categorized as a fake virus alert. Virus alerts and other fake messages of this type are usually displayed on deceptive, untrustworthy websites. Users do not generally visit these websites intentionally - potentially unwanted applications (PUAs) often force redirects to them. Similarly, PUAs are often installed unintentionally without users' knowledge. In addition to unwanted redirects, these apps serve users with intrusive ads and collect various browsing-related information.

Your OSX 10.11 El Capitan Is Infected With 3 Viruses! scam

This website enables a pop-up window stating that a trojan virus ("e.tre456_worm_osx") was detected and immediate removal is required. The deceptive website itself contains information that the the visitor's Mac computer is infected with three viruses: two malware and one phishing/spyware infection. To prevent further damage (loss of photos, apps, and other data), users are urged to scan their systems by clicking the "Start Scan" button within five minutes of visiting this deceptive site (it contains a running timer). Once clicked, this button leads to download of the Mac-Mechanic app (the promoted app might be different). This website may seem to be an official Apple site, however, Apple has nothing to do with this scam. These deceptive websites generally promote apps and attempt to trick people into downloading them. To then use the apps, a purchase if often required. In summary, scams such as "Your OSX 10.11 El Capitan Is Infected With 3 Viruses!" are used to extort money from users by tricking them into believing that their computers are infected with viruses. Do not trust these websites, or the applications they promote. The best option is to simply ignore these sites and close them. If a website cannot be closed in the normal way, use Activity Monitor and 'force quit' the browser app. Alternatively, restart the computer. Do not, however, restore the previously closed session, since this will reopen the deceptive website that caused the problem in the first place.

As mentioned above, most visitors arrive at these websites inadvertently - they are redirected by potentially unwanted apps. In addition to unwanted redirects, these apps often deliver intrusive ads (coupons, banners, surveys, pop-ups, and so on) that are displayed using tools that enable placement of third party graphical content on any site. Therefore, they conceal underlying content of any visited website. When clicked, they usually redirect to untrustworthy websites. Clicking these ads can allow download/installation of other unwanted applications. Many PUAs also collect browsing-related data such as IP addresses, search queries, URLs of visited websites, geo-locations, etc. This might also include personal details. Developers continuously share the data with third parties (potentially, cyber criminals) who misuse it to generate revenue. Thus, having potentially unwanted apps of this type installed can result in privacy/browsing safety issues or even identity theft.

Threat Summary:
Name"Your OSX 10.11 El Capitan 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 OSX 10.11 El Capitan 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.

"Your OSX 10.11 El Capitan Is Infected With 3 Viruses!" is just one of many scams of this type, and very similar to Your System Is Infected With 3 Viruses, This Mac Is Not Secure, Your MacOS 10.12 Sierra Is Infected With 3 Viruses, and a number of others. These scams are displayed on websites designed to trick people into purchasing unnecessary applications or pay for services. Unwanted apps that cause redirects to deceptive websites are usually very similar. Most are installed unintentionally, cause unwanted redirects, collect data, and deliver advertisements.

How did potentially unwanted applications install on my computer?

Some potentially unwanted apps have official websites from which they can be downloaded, however, most users install them through intrusive advertisements or when they are bundled with other (usually free) software. "Bundling" is a deceptive marketing method used to trick people into downloading and installing unwanted apps by hiding them in "Custom", "Advanced" and other options/settings of the download/installation set-ups. Developers avoid disclosing information about the inclusion of unwanted apps in set-ups. Many users skip download/installation steps without checking the aforementioned settings, and developers use this to their advantage.

How to avoid installation of potentially unwanted applications?

Download software using official/trustworthy sources and avoid using third party software downloaders, installers, and other similar channels. Never skip software installation steps without studying them first. Check all available "Custom/Advanced" (and other similar) settings/options and deselect offers to install unwanted applications. Note that intrusive ads may seem legitimate, however, many redirect to untrustworthy websites (such as gambling, pornography, adult dating, etc.). If you experience these ads or redirects, check the list of installed programs on your operating system and extensions, add-ons, plug-ins on your browser. Remove any unwanted/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 in "Your OSX 10.11 El Capitan Is Infected With 3 Viruses!" website's pop-up window:

IMMEDIATE ACTION REQUIRED

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

Press OK to begin the repair process.

Appearance of "Your OSX 10.11 El Capitan Is Infected With 3 Viruses!" scam (GIF):

Appearance of Your OSX 10.11 El Capitan Is Infected With 3 Viruses! scam (GIF)

Screenshot of a deceptive website promoting "Your OSX 10.11 El Capitan Is Infected With 3 Viruses!" scam:

deceptive website promoting Your OSX 10.11 El Capitan Is Infected With 3 Viruses! scam

Text presented in a deceptive website promoting "Your OSX 10.11 El Capitan Is Infected With 3 Viruses!" scam:

Your Your OSX 10.11 El Capitan
is infected with 3 viruses!
Monday January 7, 2019 10:31 AM

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!

3 minute and 46 seconds remaining before damage is permanent.

Screenshot of the Mac-Mechanic installer:

mac-mechanic installer

Screenshot of the Mac-Mechanic application:

mac-mechanic application

Instant automatic removal of Your OSX 10.11 El Capitan 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 OSX 10.11 El Capitan 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 browser redirects to "Your OSX 10.11 El Capitan Is Infected With 3 Viruses!" scam-displaying website using Combo Cleaner:

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 osx 10.11 el capitan 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 OSX 10.11 El Capitan Is Infected With 3 Viruses!" virus removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove "your osx 10.11 el capitan 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 osx 10.11 el capitan 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 osx 10.11 el capitan 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.

Our malware removal guides are free. However, if you want to support us you can send us a donation.

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 OSX 10.11 El Capitan 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 OSX 10.11 El Capitan Is Infected With 3 Viruses!" virus on your mobile device.
We Recommend:

Get rid of Your OSX 10.11 El Capitan Is Infected With 3 Viruses! virus today:

▼ REMOVE IT NOW with Combo Cleaner for Mac

Platform: macOS

Editors' Rating for Combo Cleaner:
Editors ratingOutstanding!

[Back to Top]

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