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Процесс MRT с использованием большого неограниченного объема памяти

Сегодня у моей машины закончилась память. Я пошел в Activity Monitor, и он показал процесс под названием MRT, использующий много памяти. Я перезапустил свой компьютер, надеясь, что это поможет, но даже после перезапуска я вижу, что объем памяти MRT увеличивается примерно на 0,01 ГБ каждые несколько секунд.

Я на MacOS Sierra 10.12.6 на MacBook Pro (Retina, 15-дюймовый, середина 2015 года), 16 ГБ ОЗУ.

Похоже, есть сообщения о том, что MRT использует высокую загрузку ЦП и как его удалить здесь . Но я бы предпочел не удалять его, потому что он сканирует на наличие вредоносных программ.

ОБНОВЛЕНИЕ: Я даже попробовал шаги, описанные в ссылке выше под «Вручную удалить MRT», но, похоже, это не сработало, процесс MRT все еще работает и продолжает увеличивать использование памяти.

Три системы, которые работают вместе для защиты вашего Mac от вредоносных программ:

Итак, это процессы Apple, и если они заняты, вероятная причина — вы заражены или скомпрометированы. Это может быть ложным срабатыванием, но вы можете рассмотреть возможность включения привратника и sip, если вы отключили их и посмотрите, сможете ли вы очистить свою систему. Если нет, то вам может потребоваться чистая установка с исправлениями, а затем осторожно вернуть данные, но не какие-либо программы или вредоносные программы.

Как разработчик, я бы использовал значок шестеренки в отображаемом окне, и, пока выбрана MRT, запустил Диагностику системы . и отправил отчет об ошибке / radar / escalate в службу технической поддержки Apple Engineering, чтобы они могли выяснить, есть ли у MRT утечка памяти — это также очень вероятный сценарий, если вы уверены, что вам не нужно удалять вредоносные программы каждый раз, когда работает ваш Mac.

Предполагая, что вы просто хотите узнать, нужна ли вам очистка (или для тех, кто не является разработчиком и имеет схожие проблемы), продолжайте ниже

Отличное место для начала, если вы обычно не удаляете вредоносное ПО, — MBAM — https://www.malwarebytes.com/mac/

Как всегда, будьте немного скептически настроены / осведомлены о бесплатных инструментах, так как инструменты «защиты или очистки» от мошеннических / змеиных программ на самом деле являются компромиссными, злонамеренными и неправдивыми в отношении того, что они делают. Если вы загружаете что-то из бесплатных агрегаторов, вас может даже обмануть что-то, что не соответствует названию в файле или описании.

Я не отключил бы MRT, если он у вас горячий, если вы не уверены, что не скомпрометированы.

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Question: Q: MRT is peaking my cpu

HI folks! I really hope someone can help. I am in Italy on a big project and on my MBP late 2011 something called MRT is peaking my cpu and causing the computer fans to go insane, raving super fast and LOUD! I first dealt with the CUP situation and it seems to be gone from the activity monitor. Now the problem is back with something called MRT in the activity monitor causing this problem. CPU is always a 90 — 95 usage with this thing.

Also I have noticed the printer preferences pane locks up the systems preferences then crashed it. No idea why.

I am at my wits end and I can’t work! Please help. Thanks in advanced. P

MacBook Pro (17-inch Late 2011), Mac OS X (10.7.5), SSD drive maxed RAM 😉

Posted on Aug 26, 2017 3:44 AM

It downloads in the background automatically within 24 hours, as long as your computer is awake at the random time it uses to install such things.

If you can’t wait that long, you can speed things up by copying and pasting the following command into a Terminal window. The Terminal app is in /Applications/Utilities/

sudo softwareupdate —background

You will be asked for your admin password. When you enter it nothing will be seen. Just hit enter after typing it.

The only feedback you get will be «Triggering background check with normal scan . » and it may take up to five minutes before the background process completes. You can follow it’s progress, if you want, by viewing your install.log in the Console application.

Posted on Aug 30, 2017 12:50 PM

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Apple posted an update to MRT v1.21 yesterday which caused this issue for a few users. Apple is aware of the problem, has pulled this update and substituted MRT v1.20, but I don’t believe it will automatically replace the one you have because yours is newer. I’m confident that Apple will fix the problem when they return to work on it, but it’s anybody’s guess when that might be.

Some users have run Malwarebytes for Mac to remove the adware/malware that MRT seems to be struggling with, so I recommend you give that a try first.

Any other solution will be complicated and time consuming.

Aug 26, 2017 4:43 AM

Thank you kindly for the response! Will try this!

Aug 26, 2017 4:59 AM

Hmmm. It seems this Malware thing is a scam. You should not recommend that to people!

Aug 26, 2017 5:03 AM

Are you referring to Malwarebytes for Mac? It’s definitely not a scam. It was developed by one of the foremost security contributors here in the Forum and a colleague of mine, Mr. Thomas Reed. What gives you the impression it’s a scam?

Aug 26, 2017 5:07 AM

because everywhere I look on this forum it says DO NOT install any 3rd party anti malware or anti virus. It will ruin your computer and is a malware itself that will ask for money constantly

Aug 26, 2017 5:09 AM

Not everywhere. Search for «Malwarebytes» and you will find hundreds of recommendations from dozens of us. You will find only two anti-malware brands recommended here, ClamXAV and Malwarebytes.

The newest version of Malwarebytes includes a new optional premium feature (RealTime scanning) that will cost after the 30 day trial, but it’s scanning function remains free forever and is fully functional as a manual scan with frequent updates.

Aug 26, 2017 5:30 AM

So it seems MRT had nothing to do with this. Eventually it quit on its own after doing whatever it was doing. The fans went quiet and then for no apparent reason the next day. they started up again like a freakin jet airplane. Seriously disturbing. I looked at the activity monitor and MRT was no where to be found. Neither was the cupsd. I am truly baffled. Ideas anyone?

Aug 28, 2017 7:29 AM

No, I’m confident that this was an MRT problem caused by some adware/malware on you computer that MRT was unable to properly deal with. At least a dozen others were reporting the same situation here in the Forum since Friday.

Apple updated MRT automatically for you in the background over the weekend, which fixed their problem and hopefully allowed it to remove that adware/malware for you. Rest assured that this specific issue is gone.

Aug 28, 2017 4:31 PM

How can you download the fix for the MRT CPU consuming problem?

Aug 30, 2017 9:08 AM

It downloads in the background automatically within 24 hours, as long as your computer is awake at the random time it uses to install such things.

If you can’t wait that long, you can speed things up by copying and pasting the following command into a Terminal window. The Terminal app is in /Applications/Utilities/

sudo softwareupdate —background

You will be asked for your admin password. When you enter it nothing will be seen. Just hit enter after typing it.

The only feedback you get will be «Triggering background check with normal scan . » and it may take up to five minutes before the background process completes. You can follow it’s progress, if you want, by viewing your install.log in the Console application.

Aug 30, 2017 12:50 PM

Hi Mad Macs! I really appreciate all your efforts in helping us solve this. Although my problem is not completely solved it has gotten much better. I think its time to research more into what is happening and see if there is a solution on my end. Thank you again. You were the only one here trying to help.

Aug 31, 2017 5:58 AM

Glad that took care of that issue.

Both EtreCheck and Malwarebytes might give you some insight into your remaining problems. I’ll add one more recommendation for DetectX. All three of these were developed by fellow troubleshooters here in the Forum that I converse with on a daily basis and know to be focused on helping users without contributing to their problems. All are fully functional in trial mode and easily removed if you no longer have need for them. If they are useful, then I would encourage you to support their efforts and in some cases, their livelihood.

If you have additional questions, be sure and start a new discussion in order to draw maximum interest. Only a couple of us are likely to spot any additional you post here.

Sep 1, 2017 12:24 AM

Question: Q: MRT is peaking my cpu More Less

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Mrt.app Mac “Virus” – How to Remove It from Your Mac

This article has been made with the main idea in mind to explain what is the Mrt.app and how you can remove it completely from your Mac.

A new infection, attacking Mac users has been detected to hijack the MRT.app in the Library of your Mac. The program is believed by researchers to be a hijacking Trojan horse which affects legitimate processes of the victims’ Macs, so that the malware remains persistent on them. In addition to this, the MRT.app may have something to do with a false positive in relation to some antivirus programs that display detection. If you see the MRT.app infection to be detected n your mac, we recommend that you read this article to be able to understand when the MRT is malware on your Mac and when it’s a false positive and how you can remove the MRT.app if it is, in fact, malicious.

Threat Summary

Name	MRT.app «Virus»
Type	Malware or a false-postive for Mac OS
Short Description	Believed to come from the Malware Removal Tool (MRT), but could also be detected in relation with a virus on your Mac.
Symptoms	Detections continue to reappear in relation to MRT.app and the virus can replicate onto different legitimate Mac apps.
Distribution Method	Either a false positive or if malware, may be distributed via e-mail or files, pretending to be legitimate.
Detection Tool	See If Your System Has Been Affected by malware
User Experience	Join Our Forum to Discuss MRT.app «Virus».

MRT.app Detection – How Did I Get It

Users on reddit have complained of getting the MRT.app detected as infection on their antivirus software. The reports were associated with the app, located in the follwing path:

The reports were quickly answered as this is the Malware Removal Tool which is enabled by default on the users’ Macs. The tool is part of the embedded malware protection and likely detected by third-party antivirus programs as a virus itself, because of the escalated permissions it has over the apps. Avast support had the following to reply on their security forums:

“Re: False positive in Swift standard library? « Reply #7 on: Today at 10:26:55 PM » Hello,
sorry for your inconvenience, we are working on fix and it will be release asap.”

Other users report that the core of the conflict is within how Apple Swift library interacts with any third party antivirus programs, although no specific details were yet revealed.

What Does MRT.app Do If Malicious

Even though most reports have outlined the MRT.app detection as being a false positive, reappearing of the detection after users have reported it to most antivirus vendors may mean that it could be malicious. One of the strongest symptoms of the MRT.app being malicious is for the file to have another location as the one we have shown above. If so, then you would need to consider understanding the risks of any virus-related attack that uses the name MRT.app as a pretext to conduct it’s malicious activities.

In the events that the MRT.app is malicious, be advised that you should be aware of the fact that it can perfrom the following malicious activities on your Mac:

• Migrate to other processes and apps.
• Obtain information from your Mac’s drive.
• Cause your Mac to crash.
• Erase important information from your Mac.
• Gain live access to what you do on your Mac’s Desktop.
• Take screenshots.
• Track the keystrokes you type.
• Steal your Apple ID and other account names and passwords.
• Install other viruses on your Mac.
• Run a cryptocurrency miner malware.

If you have seen one of those symptoms, then you should do a second check up on your Mac for any viruses that may be MRT.app related or interfering with MRT so that they remain undetected.

Remove MRT.app – Related Viruses from Your Mac

If you want to stop the false positive detection of the MRT.app on your Mac it is rather easy – simply white list the folder of MRT.app in your antivirus program. If you, however believe that your Mac has been infected by malware, we would recommend that you follow the removal instructions underneath this article to remove any apps that might cause you trouble. If you cannot identify the source of the problem, then experts always recommend to download and run a scan, using an advanced anti-malware program. Such tool will automatically detect and remove any malware that may be causing issues on your Mac.

Ventsislav Krastev

Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.

Follow Me:

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 MRT.app «Virus» and remove related files and objects

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 MRT.app «Virus»:

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 MRT.app «Virus». 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 MRT.app «Virus». 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 MRT.app «Virus» 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:

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 MRT.app «Virus». If you believe there is no such file, do not delete anything.

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

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

Step 2: Remove MRT.app «Virus» – related extensions from Safari / Chrome / 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«

4. After that, select the ‘Extensions’ Tab

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

6. Click ‘Uninstall’

A pop-up window will appear asking for confirmation to uninstall the extension. Select ‘Uninstall’ again, and the MRT.app «Virus» 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.

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.

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