We Have Detected A Trojan Virus Scam (Mac)

Also Known As: "We have detected a trojan virus" virus
Type: Adware
Distribution: Moderate
Damage level: Medium

How to remove We Have Detected A Trojan Virus from Mac?

What is We Have Detected A Trojan Virus?

"We Have Detected A Trojan Virus" is a fake error message displayed by a deceptive website. Research shows that users are redirected to the site by various potentially unwanted programs (PUPs) that infiltrate systems without permission. As well as causing redirects, these rogue applications display intrusive online advertisements and continually record various user-system information.

We Have Detected A Trojan Virus adware

The website displays a pop-up message stating that the system is infected with a trojan virus. After clicking (or closing) the pop-up, users are encouraged to download a malware removal tool called MacKeeper, which is also a PUP. Bear in mind, however, that "We Have Detected A Trojan Virus" is a scam. Cyber criminals proliferate PUPs by falsely claiming that the system is infected and tricking victims to install. You should ignore this error. As mentioned above, rogue applications often deliver various advertisements including pop-ups, coupons, and banners. These conceal underlying content, significantly diminishing the web browsing experience. In addition, they often redirect to malicious websites and even accidental clicks can result in high-risk adware or malware infections. Furthermore, PUPs continually record Internet Protocol (IP) addresses, website URLs visited, pages viewed, search queries, and other similar information. This data is later shared with third parties (potentially, cyber criminals) who misuse private information to generate revenue. Therefore, the presence of information-tracking apps can lead to serious privacy issues or even identity theft. For these reasons, uninstall all PUPs immediately.

"We Have Detected A Trojan Virus" shares similarities with Mac Detected TAPSNAKE Infection, Virus Found, Internet Security Damaged, Apple Security Damaged, and many other fake errors. All state that the system is infected, missing files, or damaged in other similar ways, however, these messages are designed only to scare and trick victims into installing certain applications or paying for technical support that is not required. PUPs are often virtually identical. By offering various 'useful features', they attempt to give the impression of legitimacy, however, their only purpose is to generate revenue for the developers. These applications cause unwanted redirects (thereby generating traffic for various websites), continually display intrusive advertisements (via the "Pay Per Click" advertising model), and continually record various user-system information (which is later sold to third parties).

How did potentially unwanted programs install on my computer?

Cyber criminals proliferate PUPs by employing a deceptive marketing method called "bundling". Developers are aware that users often skip the download/installation steps and hide bundled apps within the "Custom" or "Advanced" settings. Thus, skipping this section often leads to inadvertent installation of PUPs.

How to avoid installation of potentially unwanted applications?

To prevent this situation, be very cautious when downloading and installing software. Carefully analyze each step using the "Custom" or "Advanced" settings. Furthermore, cancel all additionally-included programs and decline offers to download/install them. The key to computer safety is caution.

Text presented within "We Have Detected A Trojan Virus" pop-up:

We have detected a trojan virus (e.tre456_worm_osx) on your Mac. Press OK to begin the repair process.

"We Have Detected A Trojan Virus" scam promoting MacKeeper PUP:

We Have Detected A Trojan Virus promoting MacKeeper PUP

Text presented within this website:

Your system is infected with 3 viruses!
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 OS X 10.12.
Personal and banking information are at risk.
To avoid more damage click on 'Scan Now' immediately. Our deep scan will provide help immediately!
1 minute and 56 seconds remaining before damage is permanent.
Scan Now

Instant automatic removal of We have detected a trojan virus virus: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of We have detected a trojan virus virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter 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 Spyhunter.

Quick menu:

Video showing how to remove adware and browser hijackers from a Mac computer:

Adware removal:

Remove We Have Detected A Trojan Virus-related potentially unwanted applications from your "Applications" folder:

mac adware 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 "we have detected a trojan virus" 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.

"We have detected a trojan virus" virus removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove "we have detected a trojan virus" 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 "we have detected a trojan virus" 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 "we have detected a trojan virus" 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.