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Bizarro Trojan


Bizarro is a dangerous computer program that can take control of your system and initiate damaging processes. The Bizarro virus can be described as a Trojan Horse that employs different stealth tactics to attack the PCs of its targets.

Bizarro Trojan

The Bizarro Trojan makes good use of the vulnerabilities in the operating system of a computer

Bizarro is an extremely versatile and dangerous Trojan Horse infection that can be concealed within seemingly harmless files, email attachments, software installers and other common pieces of web content. This kind of malware most commonly makes good use of the vulnerabilities in the operating system of a computer in order to launch different malicious processes one after the other. To infect a device, Bizarro typically uses weaknesses such as the absence of a good antivirus program or the outdated code of an installed application. However, sometimes, clicking on an infected link or a malvertisement while browsing the web is enough to invite the Trojan in the system.

Unfortunately, detecting this malware and having it removed can be a quite challenging task because, unlike other viruses, the Trojan does not show visible symptoms of its presence and secretly operates in the background. That’s why, on this page, we have published a specially created removal guide with an attached professional removal tool to help the victims of Bizarro to safely detect and remove it from their computers.

What are the most likely ways this virus can harm you?

A Trojan Horse is a malware that can be used in many different ways and for many different purposes. This is what makes infections like Bizarro a preferred malicious tool for a lot of online crooks and offenders. As a matter of fact, a sophisticated Trojan like this one can be programmed to steal information from a given computer without the users’ knowledge. In addition to that, such malware can easily destroy certain files that are of great importance to the victim including work-related documents, databases or personal files. In many instances, the Trojan can be the eyes and the ears of the hackers who control it and allow them to hear and watch on their victim through the webcam and the microphone of the infected computer. Another dreadful usage of infections like Bizarro and Prun.exe is for theft of passwords, login details, access code for bank accounts, etc. On top of that, it is possible that the Trojan virus could be programmed to track any keys the victim hits through their keyboard, take screenshots of the screen and even secretly insert other viruses (Spyware, Worms, Rootkits, Ransomware, etc.) in the system through detected security holes.

So, if you have even the slightest suspicion that Bizarro might be hiding somewhere inside your computer, we highly recommend you to check the entire system with a reliable security program. If you don’t have such a program at hand, on this page, there is a great system scanner that can do the job. You can use it on its own and, based on the scanning results, you can combine it with the steps in the removal guide below to remove the Trojan right away.


Name Bizarro
Type Trojan
Danger Level High (Trojans are often used as a backdoor for Ransomware)
Symptoms Trojans are hard to detect because they typically show no visible symptoms of their presence.
Distribution Method Malicious email attachments, fake ads, infected web links, illegal websites, torrents, cracked software, pirated content.
Detection Tool

OFFER *Read more details in the first ad on this page, EULA, Privacy Policy, and full terms for Free Remover.

Remove Bizarro Trojan

If you are looking for a way to remove Bizarro you can try this:

  1. Click on the Start button in the bottom left corner of your Windows OS.
  2. Go to Control Panel -> Programs and Features -> Uninstall a Program.
  3. Search for Bizarro and any other unfamiliar programs.
  4. Uninstall Bizarro as well as other suspicious programs.

Note that this might not get rid of Bizarro completely. For more detailed removal instructions follow the 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. 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:

Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
This scanner is free and will always remain free for our website's users.
This file is not matched with any known malware in the database. You can either do a full real-time scan of the file or skip it to upload a new file. Doing a full scan with 64 antivirus programs can take up to 3-4 minutes per file.
Drag and Drop File Here To Scan
Analyzing 0 s
Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
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    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. If you see a screen like this when you click Uninstall, choose NO:

    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.

    • Remember this step – if you have reason to believe a bigger threat (like ransomware) is on your PC, check everything here.

    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.

    Type Regedit in the windows search field and press Enter.

    Once inside, press CTRL and F together and type the virus’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!

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