Js Downloader Virus

Js Downloader

Malicious programs like Js Downloader Virus can be found everywhere on the Internet – on shady sites, within misleading ads, inside pirated content or in spam e-mail attachments. All in all, threats like this one are really common and also really dangerous. Js Downloader is what is known as a Trojan Horse – surely you’ve already heard about this devastating form of malware.

Js Downloader Virus

The JS Downloader Trojan

Trojan Horse viruses tend to be really harmful and are among some of the worst imaginable cyber threats that you could have your PC infected with. Here, our task is to give you some more information about this particular malware type and also to show you how you may be able to manually deal with a potential infection from a virus like Js Downloader. We understand that a lot of users out there have already become victims to this noxious malware program and surely a big part of this article’s readers have actually landed on this page in hopes of finding a way of getting the virus removed from their machines. If that’s your current situation, we might have some good news for you. Aside from the general information that we have in this write-up, we have also created and posted on this page a guide where you can find removal instructions that will help you liberate your computer from the effects of the insidious Trojan threat. Note, however, that it is essential you closely follow and accurately execute each of the steps. If you aren’t careful, you might do something you aren’t supposed to and in this way cause even more problems. Therefore, if you think you might not be able to completely and correctly carry out the guide’s instructions, we advise you to make use of the malware-removal tool posted in the guide. It is a professional and tested security program that can be used for eliminating virus programs such as Js Downloader so give it a go if you feel like this might be a better option for you.

More information about Trojan Horses

Threats like Js Downloader are notoriously sneaky – very few users actually notice when an infection has occurred. In the majority of instances, you wouldn’t be able to spot the malware infiltration at first. This is because Trojans mostly tend to lack symptoms. They could, of course, occasionally cause unusually high RAM, CPU or GPU use as well as trigger random error messages, crashes, slow-downs and freezes but for the most part there won’t be anything to indicate that there’s a Trojan virus inside your system. Also, another thing to note here is that the methods used to distribute this sort of infections are also quite stealthy and difficult to spot. As we already mentioned at the start of this post, all kinds of content could be used for Trojan Horse distribution. You could find such viruses within spam messages, shady web ads, pirated software downloads, illegal streaming sites, fake web requests and offers and so on. Here, the key to keeping your machine protected and safe is to be careful with what you do while on the Internet. Naturally, you ought to stay away from sites and pages that do not seem reliable. Also, you must ensure that you only download stuff from reliable developers and distributors. Never download anything that is pirated or that is because there’s pretty much no control over what gets added to files that are getting illegally distributed. Also, since you might not be able to manually detect an infection with a virus like Js Downloader due to the overall lack of visible symptoms, we strongly advise you to equip your machine with reliable security software that would keep your computer better protected.

Damage caused by Trojans

Versatility is one of the most appropriate words that can be used to describe most viruses of the Trojan Horse category. If a virus like Js Downloader has managed to infiltrate your computer, there’s no telling what the malware might be used for. It might target your personal data and threaten to delete it or to upload it online, the Trojan might also sneak other infections inside your PC like Spyware, Rootkits and Ransomware, some Trojans are also good espionage tools and many malicious programs of this type are also known for being able to corrupt the whole system of the targeted machine. There are indeed many ways in which such infections could be used and in many cases they might be capable of executing several criminal tasks at once. The main thing to take away from this paragraph is that the sooner you take care of the infection, the better. Otherwise, if the malware is allowed to stay on your PC for an extended period of time, there are all kinds of issues that it might cause.


Name Js Downloader
Type Trojan
Danger Level  High (Trojans are often used as a backdoor for Ransomware)
Symptoms  Typically, a Trojan infection will have no symptoms but you should still be on the lookout for any unusual system behavior.
Distribution Method Viruses like this one could get distributed via spam, malvertising, torrents, illegal downloads, etc.
Detection Tool

Js Downloader Virus Removal

If you are looking for a way to remove Js Downloader 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 Js Downloader and any other unfamiliar programs.
  4. Uninstall Js Downloader as well as other suspicious programs.

Note that this might not get rid of Js Downloader 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


Js Downloader Virus

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).

Js Downloader Virus


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

Js Downloader Virus

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

Js Downloader Virus
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: https://howtoremove.guide/online-virus-scanner/

Scan Results

Virus Scanner Result
Js Downloader VirusClamAV
Js Downloader VirusAVG AV
Js Downloader VirusMaldet

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. 

Js Downloader Virus

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

Js Downloader Virus

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:

Js Downloader Virus

Js Downloader Virus

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

Js Downloader Virus

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:

Js Downloader Virus

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

Js Downloader Virus

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!


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.


  • I specifically purchased Spy Hunter to remove JSDownloaders!gen. from my computer. I ran all of your scans twice each and the damn Trojan is still here. So far, I can no longer open my settings tab and it has compromised my windows updater. Need to get rid of this before any more damage. I thought your ads said it would remove this Trojan, what gives. If it won’t I would like my money back. But I would much rather have you help me. Thanks!

    • Hello Helen

      You can contact there 24 hour support service through the app.
      Option #1: Open “SpyHunter” > click the “HelpDesk” icon in the main menu > and click on the “Submit a Support Ticket” button.
      Option #2: Click here to log in to the “My Account” or log in using the login box shown on the right side of our site’s header. Next, in the “My Account” sidebar, click on the link “Open a new support ticket”.

      They should be able to give you a custom fix that will remove JSDownloaders!gen. If however you are still not satisfied you can drop an message and ask for a refund.

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