CastoroidesOhioensis Extension Removal Guide

CastoroidesOhioensis is a questionable browser extension that poses significant threats to computer systems. It can kick off browser redirects to drive internet pages to sites not commonly visited by average web users. Because CastoroidesOhioensis can override the homepage and online browsing of internet users, computer security analysts have dubbed it a browser hijacker that belongs to the class of potentially unwanted programs (PUP). Most of the time, CastoroidesOhioensis is installed on the browser without the request of the user, or, in other words, it sneaks in by making use of other applications like freeware or shareware obtained from dubious sources.

Unwanted installation of CastoroidesOhioensis

During the setup proceedings of the downloaded freeware, CastoroidesOhioensis runs a secret installation in the background. Computer users are not aware of this because the installer package was designed to run a discreet installation of surplus programs. It is also worth mentioning that freeware does not always convey the browser integration of CastoroidesOhioensis. Sometimes, it promotes relevant adware such as Unixsearch.com, Searchtheworld.com, and many more.

Whether it is CastoroidesOhioensis or a similar unwanted program, the changes it inflicts on the internet browser program could cause major changes, especially in browser operation. CastoroidesOhioensis is able to alter homepage settings and assigns unwanted search as the new default. The processing of the web user’s online searching is delegated to unwanted searches, and it totally disregards the previous preferences. As a result, web users may never obtain the same fast and accurate results.

After it carries out unsolicited changes, CastoroidesOhioensis would proceed to its next objective, which is to generate revenue by displaying different kinds of advertisements on the browser. Aggressive objects like pop-ups, redirects, and push notifications will continue to show up on the internet program as part of CastoroidesOhioensis’s operation.

Screenshot of CastoroidesOhioensis

Avoid the origins of CastoroidesOhioensis

CastoroidesOhioensis browser hijackers can originate from various sources, with one common avenue being deceptive or malicious websites. Users may inadvertently encounter these threats when visiting compromised or untrustworthy sites, where the malicious code is designed to exploit vulnerabilities in the browser and manipulate its settings. Another source is deceptive online advertisements, commonly found on less secure websites or through malicious ad networks. Clicking on these ads can lead to the installation of CastoroidesOhioensis without the user’s knowledge or consent.

Additionally, CastoroidesOhioensis can be distributed through bundled software downloads. Users might unknowingly install CastoroidesOhioensis alongside legitimate software when they download and install programs from unverified sources. Phishing emails also serve as a source, as they may contain links or attachments that, when clicked, can initiate the download and installation of CastoroidesOhioensis. Furthermore, malicious browser extensions or plugins, often obtained from unofficial or unreliable sources, can introduce hijacking elements into the browser. It’s crucial for users to exercise caution, practice safe browsing habits, and avoid downloading software from untrustworthy sources to minimize the risk of encountering CastoroidesOhioensis amd similar browser hijackers.

Procedures to Remove CastoroidesOhioensis from Mac

This section contains comprehensive guide for Mac users. It will help you remove malicious browser hijacker from Google Chrome browser. Procedures on this page are written in a manner that can be easily understand and execute by Mac users.

Quick Fix - Scan the System with Combo Cleaner

Combo Cleaner is a trusted Mac utility application with complete antivirus and optimization features. It is useful in dealing with adware, malware, and PUP's. Moreover, it can get rid of malicious browser hijacker like CastoroidesOhioensis. You may need to purchase full version if you require to maximize its premium features.

1. Download the tool from the following page:

2. Double-click the downloaded file and proceed with the installation.

3. In the opened window, drag and drop the Combo Cleaner icon onto your Applications folder icon.

Install Combo Cleaner

4. Open your Launchpad and click on the Combo Cleaner icon.

5. Wait until antivirus downloads its latest virus definition updates and click on "Start Combo Scan" to start removing CastoroidesOhioensis.

Combo Cleaner Scanner

6. Free features of Combo Cleaner include Disk Cleaner, Big Files finder, Duplicate files finder, and Uninstaller. To use antivirus and privacy scanner, users have to upgrade to a premium version.

Proceed with the rest of the removal steps if you are comfortable manually removing malicious objects associated with the threat.

Step 1 : Delete Suspicious Google Chrome Extension on Mac

Most adware and unwanted programs are using a program called browser extension to be able to take over the settings of internet applications. Therefore, we highly recommend to check and remove the extension that is closely related to CastoroidesOhioensis.

1. Open Google Chrome browser.

2. Type chrome://extensions/ in the address bar and press Enter on keyboard.

Chrome URL on Mac

3. Find CastoroidesOhioensis or relevant entry and remove it from Google Chrome.

If unable to remove CastoroidesOhioensis because browser is "Managed by your Organization", follow these steps:

1. Activate the Developer mode on Extensions window by using the slider.

2. Then, copy or take note of the browser Extension ID.

Screenshot of Chrome Manage ID

3. Open Finder on your Mac and go to the following directory:

~/Library/Application Support/Google/Chrome/Default/Extensions

4. Once you opened the directory, find the folder that matches the Extension ID and delete it.

5. Please restart your Google Chrome browser.

Aside from this straightforward workaround, we have a separate comprehensive guide to fix the Managed by Organization issue. You can also execute that guide if the steps on this page are not enough to delete CastoroidesOhioensis.

Step 2 : Delete CastoroidesOhioensis from Mac Applications

1. Go to Finder.

2. On the menu, click Go and then, select Applications from the list to open Applications Folder.

3. Find CastoroidesOhioensis or any unwanted program.

Delete Unwanted App

4. Drag CastoroidesOhioensis to Trash Bin to delete the application from Mac.

5. Right-click on Trash icon and click on Empty Trash.

Step 3 : Delete Malicious Files that have installed CastoroidesOhioensis

1. Select and copy the string below to your Clipboard by pressing Command + C on your keyboard.

~/Library/LaunchAgents

2. Go to your Finder. From the menu bar please select Go > Go to Folder...

3. Press Command + V on your keyboard to paste the copied string. Press Return to go to the said folder.

Command + V

4. You will now see a folder named LaunchAgents. Take note of the following files inside the folder:

  • unknown.download.plist
  • unknown.ltvbit.plist
  • unknown.update.plist
  • com.unknown

The term unknown is just a representation of the actual malware name. It is normally an unfamiliar file name such as the following:

- CastoroidesOhioensis

If you cannot find the specified file, please look for any unfamiliar or suspicious entries. It may be the one causing CastoroidesOhioensis to be present on your Mac. Arranging all items to see the most latest ones may also help you identify recently installed unfamiliar files. Please press Option + Command + 4 on your keyboard to arrange the application list in chronological order.

Option+Command+4

Important: Take note of all the suspicious files as you may also delete the same item on another folder as we go on.

5. Drag all suspicious files that you may find to Trash.

6. Please restart the computer.

7. Open another folder using the same method as above. Copy and Paste the following string to easily locate the folder.

~/Library/Application Support

8. Look for any suspicious items that are similar to the ones in Step 4. Drag them to the Trash.

9. Repeat the process on the following non-hidden folders (without ~):

/Library/LaunchAgents
/Library/LaunchDaemons
/Library/Application Support
/Library/Preferences

Optional : For locked files that cannot be removed, do the following:

1. Go to Launchpad, Utilities folder, open Activity Monitor.

2. Select the process you want to quit.

Force Quit Apps

3. Click on Force Quit button.

4. You may now delete or remove locked files that belongs to CastoroidesOhioensis homepage hijacker.

Step 4 : Double-check with MBAM Tool for Mac

1. Download Malwarebytes Anti-malware for Mac from the link below.

2. Run Malwarebytes Anti-malware for Mac. It will check for updates and download if most recent version is available. This is necessary in finding recent malware threats including CastoroidesOhioensis.

3. If it prompts to close all running web browser, please do so. Thus, we advise you to PRINT this guide for your reference before going offline.

4. Once it opens the user interface, please click on Scan button to start scanning your Mac computer.

MBAM for Mac

5. After the scan, Malwarebytes Anti-malware for Mac will display a list of identified threats, CastoroidesOhioensis is surely part of it. Be sure to select all items in the list. Then, click Remove button to clean the computer.

Step 5 : Remove CastoroidesOhioensis from Homepage and Search

Google Chrome

- Open Chrome browser.
- Type the following on the address bar and press Enter on keyboard : chrome://settings/
- Look for 'On Startup' area.
- Select 'Open a specific page or set of pages'.
- Click on More Actions and select Edit.
- Enter the desired web address as your home page, replacing CastoroidesOhioensis. Click Save.
- To set default search engine, go to Search Engine area.
- Click on 'Manage search engines...' button.
- Go to questionable Search Engine. Click on More Actions and Click 'Remove from list'.
- Go back to Search Engine area and choose valid entry from Search engine used in the address bar.

CastoroidesOhioensis Removal Procedure for PC

Below is a systematic instruction that is very useful in getting rid of the potentially unwanted program (PUP) from compromised computer. In order to totally eliminate the threat, it is vital to follow the process in exact manner.

Quick Fix - Scan the PC with Combo Cleaner

Combo Cleaner is a trusted PC utility application with complete antivirus and optimization features. It is useful in dealing with adware, malware, and PUP's. Moreover, it can get rid of malicious browser extension like CastoroidesOhioensis that is responsible for displaying unknown homepage and pop-ups.

To quickly remove CastoroidesOhioensis without going through the complicated process, please click on the button to download the removal tool. You may need to purchase full version if you require to maximize its premium features.

Proceed with the rest of the removal steps if you are comfortable manually removing malicious objects associated with the threat. The following guides are also vital in deleting malicious items from the browser configuration.

Step 1 : Get Rid of Unwanted Google Chrome Extension

The above procedures should have totally eliminated the browser hijacker. However, if you still find that there are still remnants of CastoroidesOhioensis on internet application, please proceed to manual removal of associated objects as outlined below.

1. Open Google Chrome browser.

2. Type chrome://extensions/ in the address bar and press Enter on keyboard.

Chrome URL

3. Find CastoroidesOhioensis or relevant entry and remove it from Google Chrome.

If you cannot remove CastoroidesOhioensis because "Your Browser is Managed by your Organization", do the following:

1. Activate the Developer mode on Extensions window by using the slider.

2. Then, copy or take note of the browser Extension ID.

Chrome Manage ID on PC

3. Open Windows Explorer and locate the following folder:

C:\Users\(Your Username)\AppData\Local\Google\Chrome\User Data\Default\Extensions

4. After opening the Folder, find the item that matches the Extension ID and delete it.

5. Please restart your Google Chrome browser.

Aside from this straightforward workaround, we have a separate comprehensive guide to fix the Managed by Organization issue. You can also execute that guide if the steps on this page are not enough to delete CastoroidesOhioensis.

Step 2 : Scan the computer with Sophos Antivirus

To remove CastoroidesOhioensis automatically, scanning the computer with this powerful anti-virus tool is recommended. This scanner does not just uncover known threats like viruses or malware, it is also effective in discovering browser hijacker like CastoroidesOhioensis that slows down online browsing activities.

1. Download Sophos Virus Removal Tool from the link below. Save the file on your computer where you can easily access it.

2. Once the download completes, browse the location of the file. Double-click to run the program and begin the install process.

Screenshot of Sophos Installer

3. On first windows of installation wizard, click Next to continue. Then, it will display the program’s License Agreement. You need to Accept the terms in order to proceed. If Windows prompts for User Account Control, please click Yes to proceed.

Screenshot of Sophos EULA Page

4. On succeeding windows, click Next or Continue to carry on with the installation. After completing the installation process, Launch Sophos Virus Removal Tool.

5. Internet connection is required when running this scanner in order to download important updates. Make sure that everything is up-to-date to effectively remove malicious program like CastoroidesOhioensis.

6. Click the  button to  carry out the Scan. This will check the system for presence of malicious objects, malware, and viruses. The tool reveals items that were found linked to CastoroidesOhioensis+ and other suspicious entities. Be sure to remove all identified threats.

Screenshot of Sophos Virus Scan

The above procedures should have totally eliminated the CastoroidesOhioensis browser hijacker. However, if you found that there are still remnants of the threat, please proceed to manual removal of associated objects as outlined below.

Step 3 : Scan with AdwCleaner and Reset Chrome Policies

In addition to the procedure, we suggest scanning the computer with AdwCleaner tool. Possibly, there are some traces of CastoroidesOhioensis on the browser that was not deleted during the preceding steps. This tool will scan the computer and check for presence of malicious applications.

1. Follow the link below to download the tool called AdwCleaner.

2. When the download has completed, please close all running programs on the computer, especially browsers affected by CastoroidesOhioensis.

3. Browse the location of the downloaded file and double-click on adwcleaner_Ver.exe to start running the tool. Then, click on the scan button.

4. On the AdwCleaner Dashboard, click on Settings.

Image of AdwCleaner Dashboard

5. While in the Settings window, please turn On the Reset Chrome Policies option.

Image of AdwCleaner Settings for Chrome

6. Go back to the Dashboard and click the Scan button.

7. AdwCleaner searches the computer for malicious programs, extensions, plug-ins, adware, and any items that may be associated with CastoroidesOhioensis.

8. Clean or Remove all suspicious and harmful items identified after the thorough scan.

9. After the cleanup procedure, rebooting the computer is required to finalize the removal of detected threats.

About the author

Leave a Comment

Your email address will not be published. Required fields are marked *