Trezaa has been classified as an adware. Programs like Trezaa are known to cause all sorts of internet browsing problems like changing of the user’s designated home page or even the preferred browser of choice and a number of unwanted pop-up ads.


The Trezaa Malware.

If you are looking at this page, you have undoubtedly noticed unusual behavior on your PC. Either in the form of advertisements, excessive pop-up ads, random opening of webpages and/or other unwanted tabs, and worst case scenario: opening of additional browsers when you have no intentions to use them. You have probably also noticed that this is not happening just with Chrome, for instance, but with Mozilla Firefox and Internet Explorer too.

This article will help you to understand what exactly has happened or is happening with your PC, how to remove Trezaa Malware and how to protect yourself for the future. If you still have questions, you’re welcome to leave them as comments and we will reply to you in a timely manner.

What is Trezaa?

Another sign of Trezaa Malware is something we call “browser hijacker”. Simply put: this is when you are working on your computer and suddenly random web pages begin to open or additional browsers. The content seen on these websites is usually, again, something of the type of the ad mentioned above or even worse, inappropriate.

This is as high as the red flag can go to signalize that something is definitely gotten into your computer and needs your prompt attention and to be uninstalled. Any delay of removing will cause further infection to your files!

We live in a digital era where computers and other digital inventions have taken over most of what used to be ‘man-done work’. Along with the convenience of it and efficiency, hackers are taking advantage of our naive trust in computers, programs, etc. They know how we think, what we use our devices for and have created threats that attack us on a regular basis. A decade ago a computer malware was just that: a virus. Now the word is not a good enough definition as there are many types and kinds of viruses. Today, we will tell you of Trezaa Malware. As much as some still consider it not to be a virus and even a legal software, the truth is that it is not — it is harmful.

Trezaa Malware could be easily spotted by simply paying close attention to the advertisements and pop-up ads on the web pages you visit. Yes, it is always nice to catch a good promo-ad about a discounted vacation on the Hawaii islands, but is this really coming from a legit tourist company? Well, if the ad looks suspicious in any way, such as: flashing images, changing content, asking for a good amount of money as a security deposit, or if it is simply prompting you to click on it — “you’re one click away from your dream vacation!”, kind of thin — then it is 100% a sham. The more you click on such ads, the more they will continue to pop-up and the only way you can escape is to find the virus and remove it off your PC.

Let’s look another aspect of Trezaa Malware now… How is it distributed?

There are more ways for Trezaa Malware to be spread than you and I know. Hackers are called that for a reason. Either via infected e-mail messages, such as the phishing e-mails  — they tend to appear like any other regular e-mail you receive, but end up having no text, changing and/or self-deleting text or are simply flashing — or through letters from your Spam box/folder, or via “software bundle” — you have downloaded a program and along with it you have unintentionally downloaded few others that are carriers of the virus — when a hacker has determined that the malware needs to be spread, they will find a way to do it.

You are strongly encouraged to read carefully the removal guide attached below, familiarize yourself with the basic removal techniques and don’t be afraid to apply them when the unusual PC behavior begins. It is only in your best interest to do so.


Name Trezaa
Type Adware
Danger Level Medium
Symptoms Slowness of the PC, glitches, browser redirecting.
Distribution Method Pop-up ads, infected downloadable files, phishing e-mails.
Detection Tool

Trezaa Malware Removal

To try and remove Trezaa quickly you can try this:

  1. Go to your browser’s settings and select More Tools (or Add-ons, depending on your browser).
  2. Then click on the Extensions tab.
  3. Look for the Trezaa extension (as well as any other unfamiliar ones).
  4. Remove Trezaa by clicking on the Thrash Bin icon next to its name.
  5. Confirm and get rid of Trezaa and any other suspicious items.

If this does not work as described please follow our more detailed Trezaa removal guide below.

If you have a Windows virus, continue with the guide below.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have an Android virus, please use our Android Malware Removal guide.

If you have an iPhone virus, please use our iPhone Virus Removal guide


Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).



Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab (the “Details” Tab on Win 8 and 10). Try to determine which processes are dangerous. 


Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at:

Scan Results

Virus Scanner Result
TrezaaAVG AV

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 


Hold together the Start Key and R. Type appwiz.cpl –> OK.


You are now in the Control Panel. Look for suspicious entries. Uninstall it/them.

Type msconfig in the search field and hit enter. A window will pop-up:


Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.


Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:


If there are suspicious IPs below “Localhost” – write to us in the comments.

Open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

  1. Right-click on the Network Adapter you are using —> Properties —> Internet Protocol Version 4 (ICP/IP), click  Properties.
  2. The DNS line should be set to Obtain DNS server automatically. If it is not, set it yourself.
  3. Click on Advanced —> the DNS tab. Remove everything here (if there is something) —> OK.



  • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

Right click on the browser’s shortcut —> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).


Properties —–> Shortcut. In Target, remove everything after .exe.


Trezaa  Remove Trezaa from Internet Explorer:

Open IE, click  Trezaa —–> Manage Add-ons.


Find the threat —> Disable. Go to Trezaa —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

Trezaa Remove Trezaa from Firefox:

Open Firefoxclick  Trezaa  ——-> Add-ons —-> Extensions.


Find the adware/malware —> Remove.
TrezaaRemove Trezaa from Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called “Default” inside:


Rename it to Backup Default. Restart Chrome.


Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
    HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!


About the author


Nathan Bookshire

1 Comment

  • Try typing System Configuration in your Start Menu search bar and opening the first search entry. Tell us if that worked.

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