ExtInstallTool on Mac
The program ExtInstallTool which is developed to be compatible with macOS is classified as potentially unwanted. Hence, it is not a malicious app that aims to damage the systems it affects but still makes them vulnerable to malware infections. It appears on Mac operating systems as a result of an unnoticed installation process.
The program is capable of modifying some essential system settings and obtain access to installed browsers. Applied changes may help it to start delivering annoying ads during browsing sessions. It may affect the regular browsing by changing the homepage and default search engine as well. All it aims for is to generate revenue for its developers even at the cost of people’s online security.
Since by acting as an adware program ExtInstallTool can present you with bogus/hacked websites, we recommend that you consider its complete removal from the affected Mac.
ExtInstallTool Adware Summary
| Name | ExtInstallTool also know as PUP.MacOS.ExtInstallTool |
| Type | Adware, PUP |
| Short Description | A questionable application that hijacks browsers installed on Apple Mac devices. Performs browser modifications without your knowledge. |
| Symptoms | The homepage, new tab page and search engine in preferred web browser may be set to display hoax search engine. Browser slowdowns may occur due to increased number of online ads. The program may start every time you start the affected Mac. |
| Distribution Method | Freeware Installations, Bundled Packages, Fake Software Updates |
| Detection Tool |
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| User Experience | Join Our Forum to Discuss ExtInstallTool Adware. |
ExtInstallTool (PUP.MacOS.ExtInstallTool) on Mac – Spreading Techniques and Impact
One way to categorize the ExtInstallTool is as a potentially unwanted program (PUP). The undesired program ExtInstallTool may trick you into installing it on your Mac via shady methods like freeware installers and counterfeit software updates.
The good news is that its sudden and unexpected appearance does not make it a Mac virus. The app is not developed to corrupt the systems it affects. Still, it is better to be removed from any affected system. This potentially unwanted program can obtain sensitive details about you and your device, alter main browser settings and start presenting you with various types of ads.
These ads may endanger the overall system security due to redirects to corrupted websites. The landing pages may also host various online scams and download files of rogue applications.
This behavior of ExtInstallTool makes it a typical adware. Adware is a type of software that invades computer systems with the goal to alter specific settings and start delivering intrusive ads. Such programs are developed for the purpose to generate revenue for their owners.
Another specific issue that may occr the moment ExtInstallTool obtain access to a macOS is the activation of different tracking technologies. These technologies will try to harvest certain details that reveal information about your browsing, browser and Mac. online activities. The list may include:
- Visited URLs and websites
- Browser’s home page
- Search queries
- Search queries on the visited web pages
- Type of used browser
- Operating system type
- Internet protocol (IP) address
- Geographic location
- The domain name of current Internet service provider (ISP)
Purposes of data collection are not quite clear. On the one hand, the owners of this undesired program may use data records to launch targeted advertising campaigns. On the other hand, the developers of ExtInstallTool Mac adware may release harvested details on dark web markets for financial income.
To avoid all unpleasant issues that may come as a result of having the ExtInstallTool program on your Mac, navigate to the removal instructions below and get rid of this undesired and potentially harmful program.
How to Remove ExtInstallTool from Mac
In order to remove ExtInstallTool adware along with all entries created on the system, you should complete several removal steps in a precise order. The guide below presents you with both manual and automatic removal approaches. In order to fully get rid of files installed by undesired programs and strengthen macOS security, we recommend that you combine the steps. The manual adware removal might be quite a complicated process that requires advanced computer skills. If you don’t feel comfortable with the manual steps, navigate to the automatic part of the guide.
In case you have further questions or need additional help with the removal process, don’t hesitate to leave us a comment.
Gergana Ivanova
Highly motivated writer with 5+ years of experience writing for ransomware, malware, adware, PUPs, and other cybersecurity-related issues. As a writer, I strive to create content that is based on thorough technical research. I find joy in the process of creating articles that are easy to understand, informative, and useful. Follow me on Twitter (@IRGergana) for the latest in the field of computer, mobile, and online security.
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Steps to Prepare Before Removal:
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.
- 1. Scan for Mac Malware
- 2. Uninstall Risky Apps
- 3. Clean Your Browsers
Step 1: Scan for and remove ExtInstallTool Adware files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as ExtInstallTool Adware, 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.
Quick and Easy Mac Malware Video Removal Guide
Bonus Step: How to Make Your Mac Run Faster?
Mac machines maintain probably the fastest operating system out there. Still, Macs do become slow and sluggish sometimes. The video guide below examines all of the possible problems that may lead to your Mac being slower than usual as well as all of the steps that can help you to speed up your Mac.
Step 2: Uninstall ExtInstallTool Adware 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 ExtInstallTool Adware:
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 ExtInstallTool Adware. 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 ExtInstallTool Adware. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.
7. Remove any leftover 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 ExtInstallTool Adware 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 ExtInstallTool Adware. 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 3: Remove ExtInstallTool Adware – related extensions from Safari / Chrome / Firefox
ExtInstallTool Adware-FAQ
What is ExtInstallTool Adware on your Mac?
The ExtInstallTool Adware threat is probably a potentially unwanted app. There is also a chance it could be related to Mac malware. If so, such apps tend to slow your Mac down significantly and display advertisements. They could also use cookies and other trackers to obtain browsing information from the installed web browsers on your Mac.
Can Macs Get Viruses?
Yes. As much as any other device, Apple computers do get malware. Apple devices may not be a frequent target by malware authors, but rest assured that almost all of the Apple devices can become infected with a threat.
What Types of Mac Threats Are There?
According to most malware researchers and cyber-security experts, the types of threats that can currently infect your Mac can be rogue antivirus programs, adware or hijackers (PUPs), Trojan horses, ransomware and crypto-miner malware.
What To Do If I Have a Mac Virus, Like ExtInstallTool Adware?
Do not panic! You can easily get rid of most Mac threats by firstly isolating them and then removing them. One recommended way to do that is by using a reputable malware removal software that can take care of the removal automatically for you.
There are many Mac anti-malware apps out there that you can choose from. SpyHunter for Mac is one of the reccomended Mac anti-malware apps, that can scan for free and detect any viruses. This saves time for manual removal that you would otherwise have to do.
How to Secure My Data from ExtInstallTool Adware?
With few simple actions. First and foremost, it is imperative that you follow these steps:
Step 1: Find a safe computer and connect it to another network, not the one that your Mac was infected in.
Step 2: Change all of your passwords, starting from your e-mail passwords.
Step 3: Enable two-factor authentication for protection of your important accounts.
Step 4: Call your bank to change your credit card details (secret code, etc.) if you have saved your credit card for online shopping or have done online activiites with your card.
Step 5: Make sure to call your ISP (Internet provider or carrier) and ask them to change your IP address.
Step 6: Change your Wi-Fi password.
Step 7: (Optional): Make sure to scan all of the devices connected to your network for viruses and repeat these steps for them if they are affected.
Step 8: Install anti-malware software with real-time protection on every device you have.
Step 9: Try not to download software from sites you know nothing about and stay away from low-reputation websites in general.
If you follow these reccomendations, your network and Apple devices will become significantly more safe against any threats or information invasive software and be virus free and protected in the future too.
More tips you can find on our MacOS Virus section, where you can also ask any questions and comment about your Mac problems.
About the ExtInstallTool Adware Research
The content we publish on SensorsTechForum.com, this ExtInstallTool Adware how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific macOS issue.
How did we conduct the research on ExtInstallTool Adware?
Please note that our research is based on an independent investigation. We are in contact with independent security researchers, thanks to which we receive daily updates on the latest malware definitions, including the various types of Mac threats, especially adware and potentially unwanted apps (PUAs).
Furthermore, the research behind the ExtInstallTool Adware threat is backed with VirusTotal.
To better understand the threat posed by Mac malware, please refer to the following articles which provide knowledgeable details.