TheorySeek mac virus Removal Guide
What is TheorySeek mac virus?
TheorySeek virus infects mac machines and causes ad spam, PUP, and malware installations
TheorySeek mac virus can lead to operating system damage and privacy issues
TheorySeek is a mac virus that belongs to the Adload malware family. It has both hijacking and adware capabilities which means it can cause an increased amount of commercial content, like pop-ups, banners, redirects, etc. It can also change the main settings of the browser, like the homepage, new tab address, and search engine.
Adware designed to infect mac machines is much more aggressive than adware designed to infect Windows machines. It can also automatically install PUPs (potentially unwanted programs), and malware without the users' knowledge. The pop-ups may be displayed by rogue advertising networks that place ads leading to dangerous sites.
|TYPE||Adware; browser hijacker; mac virus|
|SYMPTOMS||Different homepage and new tab addresses; redirects to some other search engine and shady websites; machine performs worse than before; unknown apps appear on the machine|
|DISTRIBUTION||Fake software updates, deceptive ads, installing programs from peer-to-peer file-sharing platforms|
|DANGERS||Altered search results can lead to dangerous websites; pop-up ads might be promoting scams; the virus can install other PUPs or even malware in the background|
|ELIMINATION||Eliminating this Mac virus manually can be quite complicated. The easiest and most effective way would be to open a professional security tool and scan your system to delete every related file|
|FURTHER STEPS||FortectIntego should be used to completely wipe out any data left and fix the remaining damage|
TheorySeek mac virus in detail
Most people do not notice the intruder until it has already started making changes. Users can find the main file of the mac virus in their “Applications” folder. All Adlaod viruses have the same icon – a magnifying glass inside a green, teal, or grey background.
However, that does not mean that removing it is easy. TheorySeek mac adware can use various evasion techniques to keep itself from being detected. It can even bypass Apple's own security system XProtect. It scatters its files across the machine disguised as normal system files to make it more difficult for average users to identify them.
That is why it is best to avoid such intruders in the first place. Besides, the mac virus attaches a browser extension that can not even change the settings, but also collect various data.
Most often, people get infected with mac viruses, like TheorySeek through fake Flash Player updates. Users often stumble upon sites that say they cannot see some kind of content unless they install the newest version. The truth is, Flash Player was discontinued in 2020 and replaced by HTML5.
Another common distribution channel is fake torrent websites, freeware, and peer-to-peer file-sharing platforms. People like to install “cracked” software because they do not have to pay for it. However, there is no way to know if the programs they are downloading are safe.
Such platforms are the perfect breeding ground for all kinds of malware. Crooks can disguise malicious applications as trustworthy and legitimate. You should only use official web stores and developer websites. Apps that get listed on digital marketplaces have to go through an extensive review process.
Another thing that users may not be aware of is the importance of keeping the operating system and software updated. Hackers can use software vulnerabilities to deliver their malicious programs. Software developers regularly release security patches that should be installed as soon as possible if you want to prevent this.
Removal of TheorySeek mac virus
Manual removal of Adload can be quite difficult. With launch agents, daemons, cronjobs, it can sometimes take several attempts to beat all of these before one of them manages to re-write deleted components back. You should not do this yourself unless you know what you are doing and what kind of files you need to delete.
Some of the files can have a .plist extension, a standard settings' file, also known as a “properties file,” used by macOS applications. It contains properties and configuration settings for various programs. The app also uses different persistence techniques and drops many files across the system, complicating browser extension and application removal.
To keep your mind at peace, we recommend using professional anti-malware tools SpyHunter 5Combo Cleaner or Malwarebytes, which can detect unwanted programs and eradicate them. You also do not know if the virus installed any additional malicious programs, so this is the safest way to ensure the system is clean.
If you still want to try and delete it manually, proceed with these steps:
- Open Applications folder
- Select Utilities
- Double-click Activity Monitor
- Here, look for suspicious processes related to adware and use Force Quit command to shut them down
- Go back to the Applications folder
- Find TheorySeek in the list and move it to Trash.
If you are unable to shut down the related processes or can't move the app to Trash, you should look for malicious profiles and login items:
- Go to Preferences and select Accounts
- Click Login items and delete everything suspicious
- Next, pick System Preferences > Users & Groups
- Find Profiles and remove unwanted profiles from the list.
There are likely to be more .plist files hiding in the following locations – delete them all:
- Select Go > Go to Folder.
- Enter /Library/Application Support and click Go or press Enter.
- In the Application Support folder, look for any dubious entries and then delete them.
- Now enter /Library/LaunchAgents and /Library/LaunchDaemons folders the same way and terminate all the related .plist files.
The manual elimination process might not always result in full virus removal. Therefore, we still strongly suggest you perform a scan with security software.
Remove the browser extension
TheorySeek mac virus can enter the system through shady sites using social engineering
It is possible that TheorySeek also collects browsing-related and sensitive information. Various scripts might be sending data to tracking servers. Some of the data that could be exposed is your IP address, user name, macOS and browsers' versions, an ID of the computer, items in the Applications folder, a list of installed agents, daemons, and system configuration profiles.
TheorySeek mac adware also employs an unwelcome add-on that messes with the settings. After the dangerous files are eliminated from your system, you should take care of your browsers. You can get rid of cookies and cache automatically with the help of FortectIntego. It will also fix any damaged files and system errors so you should notice an improvement in machine's performance.
If you prefer doing this yourself without additional help, here are the instructions. Steps for other browsers you will find at the bottom of this article.
- Click Safari > Preferences…
- In the new window, pick Extensions.
- Select the unwanted extension and select Uninstall.
Cookies and website data:
- Click Safari > Clear History…
- From the drop-down menu under Clear, pick all history.
- Confirm with Clear History.
The simplest and quickest solution to this is completely resetting Safari:
- Click Safari > Preferences…
- Go to Advanced tab.
- Tick the Show Develop menu in menu bar.
- From the menu bar, click Develop, and then select Empty Caches.
Getting rid of TheorySeek mac virus. Follow these steps
Remove from Mozilla Firefox (FF)
Remove dangerous extensions:
- Open Mozilla Firefox browser and click on the Menu (three horizontal lines at the top-right of the window).
- Select Add-ons.
- In here, select unwanted plugin and click Remove.
Reset the homepage:
- Click three horizontal lines at the top right corner to open the menu.
- Choose Options.
- Under Home options, enter your preferred site that will open every time you newly open the Mozilla Firefox.
Clear cookies and site data:
- Click Menu and pick Settings.
- Go to Privacy & Security section.
- Scroll down to locate Cookies and Site Data.
- Click on Clear Data…
- Select Cookies and Site Data, as well as Cached Web Content and press Clear.
Reset Mozilla Firefox
If clearing the browser as explained above did not help, reset Mozilla Firefox:
- Open Mozilla Firefox browser and click the Menu.
- Go to Help and then choose Troubleshooting Information.
- Under Give Firefox a tune up section, click on Refresh Firefox…
- Once the pop-up shows up, confirm the action by pressing on Refresh Firefox.
Remove from Google Chrome
Delete malicious extensions from Google Chrome:
- Open Google Chrome, click on the Menu (three vertical dots at the top-right corner) and select More tools > Extensions.
- In the newly opened window, you will see all the installed extensions. Uninstall all the suspicious plugins that might be related to the unwanted program by clicking Remove.
Clear cache and web data from Chrome:
- Click on Menu and pick Settings.
- Under Privacy and security, select Clear browsing data.
- Select Browsing history, Cookies and other site data, as well as Cached images and files.
- Click Clear data.
Change your homepage:
- Click menu and choose Settings.
- Look for a suspicious site in the On startup section.
- Click on Open a specific or set of pages and click on three dots to find the Remove option.
Reset Google Chrome:
If the previous methods did not help you, reset Google Chrome to eliminate all the unwanted components:
- Click on Menu and select Settings.
- In the Settings, scroll down and click Advanced.
- Scroll down and locate Reset and clean up section.
- Now click Restore settings to their original defaults.
- Confirm with Reset settings.
How to prevent from getting adware
Access your website securely from any location
When you work on the domain, site, blog, or different project that requires constant management, content creation, or coding, you may need to connect to the server and content management service more often. The best solution for creating a tighter network could be a dedicated/fixed IP address.
If you make your IP address static and set to your device, you can connect to the CMS from any location and do not create any additional issues for the server or network manager that needs to monitor connections and activities. VPN software providers like Private Internet Access can help you with such settings and offer the option to control the online reputation and manage projects easily from any part of the world.
Recover files after data-affecting malware attacks
While much of the data can be accidentally deleted due to various reasons, malware is one of the main culprits that can cause loss of pictures, documents, videos, and other important files. More serious malware infections lead to significant data loss when your documents, system files, and images get encrypted. In particular, ransomware is is a type of malware that focuses on such functions, so your files become useless without an ability to access them.
Even though there is little to no possibility to recover after file-locking threats, some applications have features for data recovery in the system. In some cases, Data Recovery Pro can also help to recover at least some portion of your data after data-locking virus infection or general cyber infection.