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PUA.Wasmcoinminer “Virus” Removal (May 2018 Update)

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading SpyHunter to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

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More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

This page aims to help you remove PUA.Wasmcoinminer “Virus”. Our removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

If you are dealing with PUA.Wasmcoinminer “Virus” then you are dealing with a rogue coinminer.

If all of your browser apps have started the production of far too many ads (pop-ups/ banners) or their usual homepages and search engines have been substituted with some unfamiliar ones, and if all of them have launched some redirection to unknown web pages, it is possible that your PC has gotten infected by one particular version of a browser hijacker. Its name is PUA.Wasmcoinminer, and it might affect all of the most popular browser apps, such as Chrome/ Explorer/ Opera or Firefox, and the less widespread ones as well.

What do we mean by stating that a program is “a browser hijacker”?

All of the browser hijackers we know of are actually programs with all of the following traits: each one of them could modify the settings and the appearance of the programs you use to browse the web with. Such consequences could awfully annoy you – all the ad campaigns coming or the usual homepage/ search engine may indeed be quite annoying and might occur in case of an infection caused by a program like PUA.Wasmcoinminer. The probable redirection processes that result from the infection with PUA.Wasmcoinminer may really be very disturbing because the displayed web pages might be totally unknown or appear very suspicious. What’s more, you may not really approve of the newly-established homepages and/or search engines your browser apps may start displaying. Generally, the way in which such a hijacker could affect your PC is harmless. However, you might feel really irritated sometimes – the fact that makes such programs so unwanted and infamous.

Does PUA.Wasmcoinminer fall into any malware category?

As a kind of a browser hijacker, this product has never been associated with any version of malware at all. Here is an illustration: any common representative of Ransomware, for example, is capable of getting self-installed on your PC, and after that it can access your data storage spaces and encode all the essential data you keep there. These malicious effects are very improbable when it comes to an infection rendered by any version of a browser hijacker.

PUA.Wasmcoinminer “Virus” Removal

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).



We get asked this a lot, so we are putting it here: Removing parasite manually may take hours and damage your system in the process. We recommend downloading SpyHunter to see if it can detect parasite files for you.

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

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:

hosts_opt (1)

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.

ie9-10_512x512  Remove PUA.Wasmcoinminer from Internet Explorer:

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

pic 3

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

firefox-512 Remove PUA.Wasmcoinminer from Firefox:

Open Firefoxclick  mozilla menu  ——-> Add-ons —-> Extensions.

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove PUA.Wasmcoinminer from Chrome:

Close Chrome. Navigate to:

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

Rename the Folder to Backup Default

Rename it to Backup Default. Restart Chrome.


To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading SpyHunter
a professional malware removal tool.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

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

Nevertheless, why are most hijackers so annoying? All the irritating modifications PUA.Wasmcoinminer may lead to are legal as a whole, and may result into no actual damage for you or your system. Its creators have set all hijackers to simply promote new homepages, search engines, products, services, etc. The activity of merely advertising something has never been considered malicious itself, nor has it ever been illegal in any way. Nonetheless, the flow of pop-ups and banners may indeed be overwhelming you in the process of surfing the Internet. Despite that, none of these facts are even close to what we consider traits of real malicious threats. Actually, the reason why developers create such hijackers is that by using them for the promotion of services and products, they can earn large profits.  

If PUA.Wasmcoinminer is not really dangerous, how has your system ended up infected?

PUA.Wasmcoinminer might come from many different sources. All torrents or shareware-distributing websites might have it as a component, and as soon as you load or download anything from there, you could give PUA.Wasmcoinminer your indirect permission to get installed on your personal computer. Furthermore, it may be hiding inside a software bundle. However, remember that the simple act of downloading any bundle can’t infect your PC with an ad-producing piece. Getting it installed in the least suitable way, though, could lead to contamination. But what does ‘a program bundle’ mean and what is the right way to install one? In general, a program bundle is the mixture of some free programs (apps/ games), gathered and distributed usually for free. The only sensible way of having such a bundle installed on your PC (or any separate program from it) is to never grant your permission for the entire content of such a bundle to get incorporated into your computer. The installation feature that guarantees the opportunity to opt in and out of bundle components and their corresponding unwanted features is the Customized one (also commonly labeled as Advanced). Always select it for the proper completion of any ongoing installation process.

We should also point out the installation options you can’t afford to opt for, provided that you need to keep your system hijacker-free. Typically, they are the ‘Recommended’, ‘Easy’, ‘Typical’ or ‘Default’ features. Don’t select any of those!

The tips to follow so as to remove such a hijacker:

Carefully read and implement the Removal Guide instructions that we have shared with you just below.


Name PUA.Wasmcoinminer
Type Coinminer/Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Some changes of your browsers such as ad production and/or page redirection.
Distribution Method Via program bundles, shareware, contagious online ads, spam, torrents.
Detection Tool

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you’ll need to purchase the full version. More information about SpyHunter and steps to uninstall.

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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