how do I get rid of search marquis?

Follow the instructions below.

First, ensure you have a reliable backup of your Mac, in case something should go wrong with continued troubleshooting. To learn how to do that, please read Back up your Mac with Time Machine.

• A backup is a fundamental prerequisite regardless of whatever method you may choose uninstall adware, and would apply even if your Mac were running perfectly well. Do not overlook this fundamental requirement. It's important.

Next: This step will prevent the scam products from loading so that they can be removed while they are inactive. Restart in "Safe Mode", and log in: How to use safe mode on your Mac. Starting in Safe Mode takes longer than usual so let it finish. The rogue processes affecting that Mac are inoperative in "Safe Mode".

The following files and / or folders need to be deleted while using your Mac in "Safe Mode":

First screenshot:

Drag that selection of files to the Trash. You may be asked to authenticate. Confirm they are no longer present in that folder. Leave all the others alone for now.

Nothing needs to be deleted from the folders in your other screenshots, but read my comments regarding "Malwarebytes" later.

Next: open Safari and select the Safari menu > Preferences... > Extensions. If you see any Safari Extensions that you do not recognize or understand, simply click the Uninstall button and they will be gone. No Safari Extensions are required for normal operation. Then, select the General pane and review your Homepage selection. Repeat those equivalent actions for any other browser you may use (Brave, Firefox, or Opera for example).

There may also be adware-associated app icons in your Mac's Applications folder. Open it and examine its contents. Any unwanted or mysterious app icons should be obvious to you, but again please don't remove anything if you are uncertain—ask first. Identify any suspicious apps by name, or post another screenshot.

Next: In an abundance of caution, examine System Preferences > Extensions. Determine if there are any System Extensions that may have been installed without your knowledge. Ask if you're uncertain.

Remaining in System Preferences, check for the presence of any Profiles. Profiles are installed by organizations with a need to manage Macs deployed in institutional corporate or educational environments (for example), but have also been exploited by adware creators and similar malcontents. If any Profiles are installed on your Mac an icon like this will appear in System Preferences:

If you see that icon in System Preferences, select it. To remove a Profile, select it, then click the [—] (minus) button and authenticate.

Remaining in System Preferences, open Users & Groups. Select your User Account's Login Items. You may or may not find those Applications in its list. If you do, select them then click the [—] (minus) button to remove them from Login Items.

You can then restart your Mac and log in as usual. Evaluate its operation and ensure everything is working as you expect it should.

Next: if you want to eradicate all remaining adware remnants post a screenshot of the following folder, in the same manner as you did earlier:

~/Library/Application Support

It is normal for that folder to contain many items, but anything associated with the above adware may contain identical names. If you find a folder or folders bearing those names, drag those folders to the Trash. Without the files you already removed or the reintroduction of similar malware, they can do nothing but occupy space. These can be removed if you wish, but again don't remove anything if you are uncertain.

Next: You can see for yourself that "Malwarebytes" did nothing to prevent you from installing adware, and from what you describe it was equally ineffective at removing it. It's your decision whether to keep it installed or not, but there is nothing any product can do to prevent you from installing junk. Recognition and avoidance is the only effective defense. For more regarding that subject, read How to install adware - Apple Community.

Finally: If any of the above actions result in abnormal operation or if something else stops working, the easiest way to recover would be to restore the Time Machine backup you created as a prerequisite, so the importance of that fundamental step cannot be overemphasized.

If you restart your Mac in "Safe Mode" you will be able to bypass the "Search Marquis" redirect for the purposes of following those instructions.

If you don't know how to use Safe Mode please write back for instructions. I need to know your Mac model and the macOS version it's running.

There are eleven different 27 inch iMac models: Identify your iMac model - Apple Support

Read and follow the instructions in Removing "Search Marquis" / "Search Baron" / etc - Apple Community.

If you have trouble following those instructions please let me know where you get stuck. Otherwise, please post those three screenshots in a reply to this Discussion.

Any type of link that would normally direct you to a site is hijacked by search marquis and takes you only to the search marquis link. You can try to type in the search box where you want to go but usually you'll get taken back to search marquis page.

It's annoying & frustrating.

Click here and run the tool.

(219950)

Read and follow the instructions in Removing "Search Marquis" / "Search Baron" / etc - Apple Community.

Post those three screenshots in a reply to this Discussion.

These are the files you requested

I had the search marquis virus in 2019, I bought a copy of CleanMacX and it cleaned perfectly. You can always go and get the crack if you want to, I now use the cracked one.

You Silly, cannot use the link you suggested because search marquis interferes and redirects to search marquis.

I have an iMac 27" desktop running os version 12.4