THREAT REMOVAL

Remove Longage.A Backdoor Trojan from Mac

What is Longage.A? What does it mean to see the detection Longage.A Backdoor? How to remove Longage.A completely from your Mac?

Remove-Longage-A-Trojan-Mac

Longage.A is the detection name of a Trojan horse that affects Mac devices. Analyses of its features reveal that it is a highly sophisticated and persistent threat. Since it has the ability to execute remote commands, download files and transfer data, it could allow threat actors to access and fully control your computer. Furthermore, Longage.A could help them steal your sensitive information. In the event that you see Longage.A detection on your Mac, we recommend you to keep up with our removal guide.

Threat Summary

NameLongage.A
TypeBackdoor Trojan for MacOS
Short DescriptionAims to slither on your Mac undetected and perform series of malcious activities.
SymptomsThe malware aims to remain undetected, so no evident symptoms may be registered.
Distribution MethodMalware, Malspam, Compromised websites
Detection Tool See If Your System Has Been Affected by malware

Combo Cleaner

Malware Removal Tool

User ExperienceJoin Our Forum to Discuss Longage.A.

Longage.A Backdoor Trojan – What is It All About?

Longage.A is the detection name given to a Trojan horse that affects Mac OS. Analyses of its samples reveal that it is designed to act like backdoor Trojan. It could also be used for the collection of private information. Infection with this Trojan could allow unauthorized access and control to your Mac device. Furthermore, attackers could misuse it for data theft and additional system compromises.

As reported, the spread of this backdoor could be realized with the help of other malware. So in the event that you have detected the presence of Longage.A Trojan on your Mac, you should definitely ensure that no additional malware is running on it. Compromised websites were also detected to drop the Trojan on target devices. Whenever, one of these pages loads in a target browser, it drops the nasty malware on the device and triggers its execution.

As soon as Longage.A is launched on your Mac, it accesses the following directory to drop copies of itself:

  • /Library/launched

Then it enters the LaunchAgents folder to install a property list file called Launchd. By doing this, the Trojan becomes able to run automatically whenever you log in the system.

After these two initial attack stages, Longage connects to an IP address that is indicated in its code to remotely receive certain commands from malicious actors. The moment this event occurs, the security of your security and information stored on it are put at greater risk. On one hand, the attackers could obtain details like:

  • Operating system version
  • Physical RAM size
  • Logon name of the current user

Based on these details, they could attempt to deliver additional malware.

Furthermore, as long as the connection remains uninterrupted, they could perform all of the actions mentioned below:

  • Gather information about your computer
  • Send a list of currently-running processes
  • Kill processes
  • Run or delete files
  • Receive files from, or send files to, a remote server
  • Uninstall Longage.A Backdoor
  • Send an Apple event to initiate your computer to sleep, restart, shut down and log out
  • Open a bash shell command prompt

Some of the most popular detections names related to Longage.A Trojan infection that are used by trusted antivirus vendors are:

→Backdoor.MacOSX.Longage.A
Backdoor:MacOS/Longage.A
Backdoor.OSX.Longage.A
OSX_LONGAGE.A
MacOS/Longage.A

Recently our team has found and reported other two detection names related to Longage.A backdoor Trojan –

What is Mac Kontrol? What does Mac Kontrol do? Is Mac Kontrol legitimate or a virus? How to remove Mac Kontrol malware.
Mac Kontrol and
What is Mac Control? Is Mac Control a virus? How to remove Mac Control malware from your Mac? How to protect your Mac from Mac Control malware?
Mac Control.

Beware that Longage.A is a highly complicated threat that could hardly be detected. Since it could have some hidden components on your Mac, we recommend you to use the help of advanced security tools for its complete removal.

Remove Longage.A Backdoor Trojan from Your Mac

In order to remove Longage.A Trojan along with all associated files that enable it to perform various malicious activities, you should complete several removal steps. In the guide below you will find all removal steps in their precise order. You could choose between manual and automatic removal approach. In order to fully get rid of this nasty malware and strengthen the security of your device we recommend you to combine the steps.

In case you have further questions or need additional help, don’t hesitate to leave a comment or contact us via email.

Gergana Ivanova

Gergana Ivanova

Gergana has a bachelor's degree in Marketing. She has been with the STF team for five years, researching malware, reporting on the latest computer infections, and following digital marketing trends.

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OFFER
REMOVE IT NOW (MAC)
with SpyHunter for Mac
Longage.A may remain persistent on your system and may re-infect it. We recommend you to download SpyHunter for Mac and run free scan to remove all virus files on your Mac. This saves you hours of time and effort compared to doing the removal yourself.
Free Remover allows you, subject to a 48-hour waiting period, one remediation and removal for results found. Read EULA and Privacy Policy

Preparation Phase:

Before starting to follow the steps below, be advised that you should first do the following preparations:

  • Backup your files in case the worst happens.
  • Make sure to have a device with these instructions on standy.
  • Arm yourself with patience.

Step 1: Uninstall Longage.A and remove related files and objects

OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy


1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:


2. Find Activity Monitor and double-click it:


3. In the Activity Monitor look for any suspicious processes, belonging or related to Longage.A:

Tip: To quit a process completely, choose the “Force Quit” option.


4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.


5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to Longage.A. If you find it, right-click on the app and select “Move to Trash”.


6. Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to Longage.A. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.


7. Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • Go to Finder.
  • In the search bar type the name of the app that you want to remove.
  • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
  • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove Longage.A via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1. Click on "Go" and Then "Go to Folder" as shown underneath:

2. Type in "/Library/LauchAgents/" and click Ok:

3. Delete all of the virus files that have similar or the same name as Longage.A. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.


Step 2: Remove Longage.A – related extensions from Safari / Chrome / Firefox

Remove an extension from Safari and reset it.Remove a toolbar from Google Chrome Remove a toolbar from Mozilla Firefox

1. Start Safari

2. After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.

3. From the menu, click on "Preferences"

stf-safari preferences

4. After that, select the 'Extensions' Tab

stf-safari-extensions

5. Click once on the extension you want to remove.

6. Click 'Uninstall'

stf-safari uninstall

A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the Longage.A will be removed.

How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.

1. Start Google Chrome and open the drop menu

2. Move the cursor over "Tools" and then from the extended menu choose "Extensions"

3. From the opened "Extensions" menu locate the add-on and click on the garbage bin icon on the right of it.

4. After the extension is removed, restart Google Chrome by closing it from the red "X" in the top right corner and start it again.


1. Start Mozilla Firefox. Open the menu window

2. Select the "Add-ons" icon from the menu.

3. Select the Extension and click "Remove"

4. After the extension is removed, restart Mozilla Firefox by closing it from the red "X" in the top right corner and start it again.


Step 3: Scan for and remove Longage.A files from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as Longage.A, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.


Click the button below below to download SpyHunter for Mac and scan for Longage.A:


Download

SpyHunter for Mac



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