Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)

Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)


This page aims to help you remove Background.js. Our removal instructions work for every version of Windows.

There are all kinds of unwanted and potentially hazardous type of software in the virtual world. They vary from mere annoyances like browser hijackers, adware and PUPs to some really serious cyber threats the likes of Ransomware, Spyware, Rootkits and so on. One of the top most dangerous kinds of software that you could come across are the representatives of the infamous Trojan Horse malware category. Pretty much every PC user has heard about those malicious programs and about their devastating capabilities. System corruption, data theft, espionage, unauthorized remote control over the PC, loading of other malware inside the targeted machine and many more are among the potential capabilities of a virus program of the Trojan Horse class.Another typical trait of those nasty threats is that they are really sneaky and could typically remain unnoticed which allows them to complete their nefarious tasks in complete stealth. All in all, this really is one of the nastiest types of malware programs you could get your machine infected with which is the reason why it is crucial that you have a good understanding of the main traits of those insidious malware programs so that you could keep your computer protected against them in the future. However, we understand that a lot of you have likely come to this article because a Trojan Horse virus has already attacked your PCs and you are now seeking a way to have the threat neutralized and eliminated. The particular Trojan Horse representative we are going to be focusing on in the next lines is the so-called Background.js virus – it is a new threat of the Trojan Horse family and it likely has the potential to execute a variety of harmful tasks and processes once inside a targeted computer. If you think you might have Background.js inside your machine, then we strongly advise you to refer to the following removal guide and the steps that it comprises. For users who might find it difficult to complete the manual instructions from the guide and for those of you who completed the steps but yet were not able to eradicate the virus, we have included in our guide a removal security program that you can also use for eliminating the Trojan so be sure to check it out if you feel like you might need the extra help.

Remove Background.js

Background.js/Trojan.gen.npe.2 Virus Removal (April 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).

Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)


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

Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)

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

Background.js/Trojan.gen.npe.2 Virus Removal (April 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
Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)ClamAV
Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)AVG AV
Background.js/Trojan.gen.npe.2 Virus Removal (April 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. 

Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)

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

Background.js/Trojan.gen.npe.2 Virus Removal (April 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:

Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)

Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)

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

Background.js/Trojan.gen.npe.2 Virus Removal (April 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:

Background.js/Trojan.gen.npe.2 Virus Removal (April 2019 Update)

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

Background.js/Trojan.gen.npe.2 Virus Removal (April 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

The characteristics of a Trojan Horse – infection and symptoms

As we said above, stealth is one of the main reasons why viruses like Background.js are so successful and so popular among all kinds of hackers and online criminals. Typically, a Trojan would come to you as something that doesn’t initially look threatening since those virus programs usually use different forms of disguise and rely on the user’s negligence and lack of care. Anything from illegally distributed programs, games and other software to deceitful online ads, offers and update requests could be a potential carrier of Trojan Horses. Also, we shouldn’t forget about the various forms of spam messages that could also carry such infections. A Trojan like Background.js could easily get sent to your e-mail or to any of your social network accounts in the form of a seemingly harmful message attachment. The important thing here is to never interact with any type of content that you come across on the Internet if you can’t be certain that it isn’t something potentially harmful.

One other issue with Background.js and other Trojans is their overall lack of symptoms and red flags which is why it’s advisable that you always keep a trusty and fully-updated antivirus program on your PC. Also, though not always, a Trojan could still cause different types of system disturbances such as errors, crashes and excessive RAM and processor use so always be on the lookout for such irregularities as they might indeed indicate that there’s malware on your computer.

Potential uses of Background.js and other Trojans

There are many different ways a Trojan virus could be utilized. As we mentioned, those versatile threats could spy on you, steal data from your computer, gain access to your online accounts, take control over your PC, fill the computer with more malware (Ransomware, Rootkits, etc.) and many others. It is thus oftentimes difficult to predict what the type of damage would be and what the malicious program would be used for in each separate case. However, one thing is always the same and that is the importance for taking swift action towards cleaning your PC and removing all Background.js-related data. Otherwise, if the malicious Background.js is allowed to remain on your computer, there could be all kinds of negative consequences that you’d surely not want to have to experience.


Name Background.js
Type Trojan
Danger Level  High (Trojans are often used as a backdoor for Ransomware)
Symptoms  Some Trojans might trigger symptoms such as system errors, crashes and high use of RAM and CPU.
Distribution Method Anything from spam messages and malvertising to pirated software downloads and legitimate sites that have been hacked and made to distribute the malware.
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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