Cortana Runtime Broker CPU Miner Removal (March 2019 Update)

Cortana Runtime Broker CPU Miner Removal (March 2019 Update)Cortana Runtime Broker CPU Miner Removal (March 2019 Update)Cortana Runtime Broker CPU Miner Removal (March 2019 Update)


This page aims to help you remove Cortana Runtime Broker CPU Miner. Our removal instructions work for every version of Windows.

First let us make something very clear. This article is dedicated to a trojan like virus that mines cryptocurrency by using your CPU’s resources. A virus that pretends to be the legitimate Cortana Runtime Broker. This article is not designed to show you how to disable the real Cortana on Windows 10.

A Trojan Horse virus like Cortana Runtime is certainly not something that you would like to have on your computer. This indeed a really devastating piece of malware and if you currently have this virus inside your PC, be sure to read the information that this article has to offer as this might be exactly what you need for saving your computer from the dreadful effects of the insidious Trojan. Similarly to most other threats of its type, Cortana Runtime might be able to carry out a number of different shady tasks while inside your PC which makes it a rather versatile piece of malware. In order to prevent it from causing any serious damage to your machine and to your virtual privacy and security, it’s important that you take the necessary precautions and actions in order to eliminate the threat. There may be different ways you could handle this issue but here we will offer you two potential methods for dealing with the Trojan infection. The first would be a detailed guide with manual steps that you would need to complete in order to detect and remove any malware-related data and files from your PC. We can’t guarantee that the guide’s manual steps would work for each and every one of you but it would still give you a rather good chance at removing the infection. The second variant that we can offer you here is an automatic malware-removal program that we’ve posted on this page. The suggested tool is specialized in removing all kinds of malware threats and should also be able to rid your computer of the noxious Trojan. Generally, if you think you might not be able to complete the guide on your own, we’d advise you to use the automatic removal tool or at least to ask a more tech-savvy person to help you with the manual removal steps. Of course, using both methods is also an option and it is actually the best course of action as it will further boost your chances of getting rid of the malware.

Cortana Runtime Broker CPU Miner Removal


Cortana Runtime Broker CPU Miner Removal (March 2019 Update)

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).

Cortana Runtime Broker CPU Miner Removal (March 2019 Update)


Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab. Try to determine which processes are dangerous. 

Cortana Runtime Broker CPU Miner Removal (March 2019 Update)

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

Cortana Runtime Broker CPU Miner Removal (March 2019 Update)
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
Cortana Runtime Broker CPU Miner Removal (March 2019 Update)ClamAV
Cortana Runtime Broker CPU Miner Removal (March 2019 Update)AVG AV
Cortana Runtime Broker CPU Miner Removal (March 2019 Update)Maldet

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. 

Cortana Runtime Broker CPU Miner Removal (March 2019 Update)

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

Cortana Runtime Broker CPU Miner Removal (March 2019 Update)

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:

Cortana Runtime Broker CPU Miner Removal (March 2019 Update)

Cortana Runtime Broker CPU Miner Removal (March 2019 Update)

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

Cortana Runtime Broker CPU Miner Removal (March 2019 Update)

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:

Cortana Runtime Broker CPU Miner Removal (March 2019 Update)

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

Cortana Runtime Broker CPU Miner Removal (March 2019 Update)

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

Characteristics of a Trojan

Generally, the Trojan Horse malware category comprises all kinds of threats that might drastically differ from one another both in their purpose and in the way they operate. Still, there are certain characteristics that are typical for the majority of viruses that belong to this group including Cortana Runtime. For instance, most Trojans tend to rely on their victims’ negligence and carelessness in order for them to infect the targeted computers. Usual methods of distributing Trojans are sending them to the users by attaching them to spam e-mails and social network messages, linking them in misleading online offers, ads and requests, adding them to pirated content that some users might download and attempt to install, distributing them through illegal and shady sites and so on. The similar thing between all those methods is that if the user doesn’t interact with the infected piece of content, the malware wouldn’t be able to infiltrate their machine. This is actually some good news – it means that if you are really careful while browsing the Internet, the chances of getting your system infected by a Trojan would be rather slim. That said, you still need to have some sort of security software on your machine. Even the most experienced of users might make a mistake every now and then and if that happens to you, you’d be glad to have an antivirus/anti-malware program to keep your computer protected. Also, bear in mind that most Trojans lack visible symptoms so the security program of your machine might oftentimes be your only reliable way of detecting an infection with a virus like Cortana Runtime.

The versatility of Trojan Horses

This truly is one of the most versatile types of malware – Trojans are basically the Swiss army knife of the computer viruses since they could be used in all kinds of ways depending on what the end-goal of the hackers behind them is. Depending on the situation, a Trojan Horse threat could be used to damage your system, steal sensitive information from your PC or from your online accounts, load other malware pieces on your computer (Rootkits, Ransomware, Worms and so on). A lot of Trojans  have whole botnets of infected PCs that can be used for collective tasks like cryptocurrency mining, spam message distribution, DDoS (Distributed Denial of Service) attacks and so on. Those are, of course, only a small fraction of all the possible kinds of damage and harm a malware like Cortana Runtime might be able to cause to a targeted user’s PC. This is why it’s so crucial that as soon as you notice that there’s a Trojan Horse on your PC you try to remove it in order to prevent it from fulfilling its nefarious task.


Name Cortana Runtime
Type Trojan
Danger Level  High (Trojans are often used as a backdoor for Ransomware)
Symptoms Most Trojans lack any specific infection symptoms though they could still cause different forms of system disturbances which could give them away.
Distribution Method Malicious ads, spam, unreliable torrents, pirated software, etc.
Detection Tool

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


Brandon Skies

Brandon is a researcher and content creator in the fields of cyber-security and virtual privacy. Years of experience enable him to provide readers with important information and adequate solutions for the latest software and malware problems.

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