Troubleshoot Mac OS X possible malware infection

[Bc89]

Hello,
I hope you can help me.
In the past few months I have been having problems with my Mac when browsing the Internet.

Very often, in fact, I get redirected to pages that tell me that I need to update Flash Player, or I just get redirected to adverts pages.
Here some examples of random pages that come up (I hope they are not malicious, I tried to save just their names)

pc4maintainance.safeupgrades4ever.site
constantinstallermac.com
downloadappz247.online

This is proving impossible for me to use the Internet, on either Chrome or Safari.

I even get pop ups ads on website and I can’t log in (for example,I tried to use the Easy jet website but it wouldn’t let me search because there was an ad that wouldn’t go away).

I tried with a lot of different solutions as suggested on various forums, I have run a scan with Malwarebytes, I have used Avast,I have checked the extensions on Chrome and Safari,but nothing seems to be working.

I would seem that I got some sort of malware but nothing comes up when running these scans and I really don’t know what to do.

I tried to run the scan you suggest in the guidelines,but it wouldn't let me do it because I'm not using Windows.
I really hope you can help me, I'm desperate!

Thank you,

Beatrice

 

[DJ Panda]

Did anything popup after scanning with Malwarebytes or Avast? Try setting and clearing all the browsers cookies and such to default.

 

[Bc89]

No,both Malwarebytes and Avast don't detect any problem..and yes I have cleared the browsers but nothing. What worries me is the example of the Easy jet website,as it's the first time that this thing is actually preventing me from doing something from home.

 

[Deleted Member 333v73x]

If this is just a browser hijack then do what @J Gamez065 recommended and run CCleaner and Windows Disk Clean-Up (search Windows Disk Cleanup on your system). If it is not a browser hijack then it may be Adware/Spyware etc...

 

[Bc89]

If this is just a browser hijack then do what @J Gamez065 recommended and run CCleaner and Windows Disk Clean-Up (search Windows Disk Cleanup on your system). If it is not a browser hijack then it may be Adware/Spyware etc...

I can't run windows clean up since it's a mac and it doesn't work i'm afraid..

 

[Morvotron]

What you mention sounds as a typic adware problem. I suggest you download Bitdefender Adware Removal Tool for Mac and scan your system. Highly important not to use/browse internet while scanning, and close any running software. Reboot may be required after scanning.

 

[Ink]

Are you able to download and run Knock Knock UI?

Download: Objective-See

If not, download from another PC/Mobile and transfer over USB. Or AirDrop from iPhone / iPad.

 

[Alkajak]

If it isn't adware and it's just a redirect issue, reset your browsers by doing the following:

Safari:

Backup your bookmarks
Open Safari
Preferences > Advanced > Enable Develop Menu > Empty Caches
History > Clear history/cookies
Disable all extensions
Exit Safari
Open Finder
Navigate to User/Home folder
Go to View Options / Press Command+J
Check "Show Library Folder"
Trash Library/Caches/com.apple.Safari/Caches.db

Chrome:

Backup your bookmarks
In URL bar, enter: about:flags
Click "Reset all to defaults"