OneNote Malware

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OneNote Malware

OneNote Malware is a recent computer danger regarded as a Trojan Horse. As such, OneNote Malware is capable of performing a number of malicious actions from within the infected computer and is deemed exceptionally risky.

OneNote Malware

OneNote malware – refers to malware distributed via Microsoft OneNote Trojan files. Documents in legitimate format are modified to distribute malware by embedding them with viral content that triggers the malware download/install process when interacted with.

Recently, there has been a large increase in the number of infected OneNote files and this likely coincides with Microsoft’s decision to automatically block macros from the Internet in MS Office documents. Cybercriminals have relied on malicious macro commands to spread malware; however, these new developments have shut down this avenue of distribution and likely given rise to the use of OneNote files

Facing a Trojan virus and dealing with it can be a very challenging task, especially if you are not a computer expert and don’t know where to look for it and what to remove from your system. This is because, threats like this one are very stealthy and can hide in different system locations and directories, oftentimes mimicking regular system files and processes which further complicates their successful detection and elimination.

In certain situations, it could even be impossible to remove such a hazard from a contaminated computer without the help of an IT professional with strong programming skills or a very powerful malware removal program.

The Microsoft OneNote Malware

If you actually have the Microsoft OneNote malware or some other Trojan on your computer the one thing you shouldn’t do for sure, however, is to wait idly for the malware to perform its harmful activities. That’s why, we highly recommend you to read this article and take the necessary steps to remove the Microsoft OneNote Malware.

Naturally, you may need some assistance which is why we have created a very detailed removal guide just at the end of this post. There you will find some comprehensive removal manual that will help you delete the insidious malware from your computer.


NameOneNote Malware
Detection Tool

*Source of claim SH can remove it.

Please follow all the steps below in order to remove OneNote Malware!

How to remove OneNote Malware

  1. First, click the Start Menu on your Windows PC.
  2. Type Programs and Settings in the Start Menu, click the first item, and find OneNote Malware in the programs list that would show up.
  3. Select OneNote Malware from the list and click on Uninstall.
  4. Follow the steps in the removal wizard.

What we suggest you do first is, check the list of programs that are presently installed on the infected device and uninstall any rogue software that you find there:

  • From the Start Menu, navigate to Control Panel ->>> Programs and Features ->>> Uninstall a Program.
  • Next, carefully search for unfamiliar programs or programs that have been installed recently and could be related to OneNote Malware.
  • If you find any of the programs suspicious then uninstall them if they turn out to be linked to OneNote Malware.
  • If a notification appears on your screen when you try to uninstall a specific questionable program prompting you to just alter it or repair it, make sure you choose NO and complete the steps from the removal wizard.

Remove OneNote Malware from Chrome

  1. Click on the three dots in the right upper corner
  2. Go to more tools
  3. Now select extensions
  4. Remove the OneNote Malware extension
  • Once you open Chrome, click on the three-dots icon to open the browser’s menu, go to More Tools/ More Options, and then to Extensions.
  • Again, find the items on that page that could be linked to OneNote Malware and/or that might be causing problems in the browser and delete them.
  • Afterwards, go to this folder: Computer > C: > Users > *Your User Account* > App Data > Local > Google > Chrome > User Data. In there, you will find a folder named Default – you should change its name to Backup Default and restart the PC.
  • Note that the App Data folder is normally hidden so you’d have to first make the hidden files and folders on your PC visible before you can access it.

How to get rid of OneNote Malware on FF/Edge/etc.

  1. Open the browser and select the menu icon.
  2. From the menu, click on the Add-ons button.
  3. Look for the OneNote Malware extension
  4. Get rid of OneNote Malware by removing it from extensions

If using Firefox:

  • Open Firefox
  • Select the three parallel lines menu and go to Add-ons.
  • Find the unwanted add-on and delete it from the browser – if there is more than one unwanted extension, remove all of them.
  • Go to the browser menu again, select Options, and then click on Home from the sidebar to the left.
  • Check the current addresses for the browser’s homepage and new-tab page and change them if they are currently set to address(es) you don’t know or trust.

If using MS Edge/IE:

  • Start Edge
  • Select the browser menu and go to Extensions.
  • Find and uninstall any Edge extensions that look undesirable and unwanted.
  • Select Settings from the browser menu and click on Appearance.
  • Check the new-tab page address of the browser and if it has been modified by “OneNote Malware” or another unwanted app, change it to an address that you’d want to be the browser’s new-tab page.

How to Delete OneNote Malware

  1. Open task manager
  2. Look for the OneNote Malware process
  3. Select it and click on End task
  4. Open the file location to delete OneNote Malware
  • Access the Task Manager by pressing together the Ctrl + Alt + Del keys and then selecting Task Manager.
  • Open Processes and there try to find a process with the name of the unwanted software. If you find it, select it with the right button of the mouse and click on the Open File Location option.
  • If you don’t see a “OneNote Malware” process in the Task Manager, look for another suspicious process with an unusual name. It is likely that the unwanted process would be using lots of RAM and CPU so pay attention to the number of resources each process is using.
  • Tip: If you think you have singled out the unwanted process but are not sure, it’s always a good idea to search for information about it on the Internet – this should give you a general idea if the process is a legitimate one from a regular program or from your OS or if it is indeed likely linked to the adware.
  • If you find another suspicious process, open its File Location too.
  • Once in the File Location folder for the suspicious process, start testing all of the files that are stored there by dragging them to our free online scanner available below.
  • Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
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    • If the scanner finds malware in any of the files, return to the Processes tab in the Task Manager, select the suspected process, and then select the End Process option to quit it.
    • Go back to the folder where the files of that process are located and delete all of the files that you are allowed to delete. If all files get deleted normally, exit the folder and delete that folder too. If one or more of the files showed an error message when you tried to delete them, leave them for now and return to try to delete them again once you’ve completed the rest of the guide.

    How to Uninstall OneNote Malware

    1. Click on the home button
    2. Search for Startup Apps
    3. Look for OneNote Malware in there
    4. Uninstall OneNote Malware from Startup Apps by turning it off
    • Now you need to carefully search for and uninstall any OneNote Malware-related entries from the Registry. The easiest way to do this is to open the Registry Editor app (type Regedit in the windows search field and press Enter) and then open a Find dialog (CTRL+F key combination) where you have to type the name of the threat. 
    • Perform a search by clicking on the Find Next button and delete any detected results. Do this as many times as needed until no more results are found. 
    • After that, to ensure that there are no remaining entries lined to OneNote Malware in the Registry, go manually to the following directories and delete them:
    • HKEY_CURRENT_USER/Software/Random Directory. 
    • HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Run/Random
    • HKEY_CURRENT_USER/Software/Microsoft/Internet Explorer/Main/Random

    Is OneNote malware dangerous?

    First, however, we should tell you a few more words about the malicious capabilities of the threat you are about to deal with. The so-called Trojan horses, such as OneNote Malware, are very flexible and multifunctional pieces of malware. Unlike other advanced malware representatives like spyware or ransomware, they appear to have multiple capabilities that can be used together or independently based on the particular outcome that the hackers who manage them want to achieve.
    In certain examples, a virus of this kind may remove vital data from your HDD and, thereby, cause a massive loss of important information which could be work-related or personal. In some scenarios, the intent of the malicious actors behind the Trojan could be to try to secretly spy on you and collect personal details, passwords, login credentials and other data that could serve them well in some other criminal scheme. Sadly, most of the malicious activities that Trojans like OneNote Malware, Walliant and GShade Malware could do may have no visible symptoms. However, in any case, the elimination of the infection is always the most important thing, irrespective of the actual usage of the Trojan. In fact, it is best if you manage to get rid of the threat before it even gets to harm your computer.
    A few tips on future protection
    The elimination of OneNote Malware c is definitely vital for keeping a safe and stable computer but it is also essential that threats like that never enter your machine in the future. For that, it is essential that you invest in a reliable anti-virus program and try to apply some basic online security rules while surfing the web such as not clicking on random pop-ups, keeping away from pirated content and sticking to reputed pages as much as possible.


    About the author

    Lidia Howler

    Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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