Remove PUP.Optional.LuaRT.A (Virus Removal Guide)

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Written by: Stelian Pilici

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PUP.Optional.LuaRT.A is a specific detection used by Malwarebytes Anti-Malware and other antivirus products to indicate and detect a Potentially Unwanted Program.
A potentially unwanted application is a program that contains adware, installs toolbars or has other unclear objectives.
[Image: PUP.Optional infection]
PUP.Optional.LuaRT.A it’s technically not a virus, but it does exhibit plenty of malicious traits, such as rootkit capabilities to hook deep into the operating system, browser hijacking, and in general just interfering with the user experience. The industry generally refers to it as a “PUP,” or potentially unwanted program.
The PUP.Optional.LuaRT.A infection is used to boost advertising revenue, as in the use of blackhat SEO, to inflate a site’s page ranking in search results.

PUP.Optional.LuaRT.A got on your computer after you have installed a freeware software (video recording/streaming, download-managers or PDF creators) that had bundled into their installation this browser hijacker. This Potentially Unwanted Propgram is also bundled within the custom installer on many download sites (examples: CNET, Brothersoft or Softonic), so if you have downloaded a software from these websites, chances are that PUP.Optional.LuaRT.A was installed during the software setup process.

PUP.Optional.LuaRT.A is an ad-supported (users may see additional banner, search, pop-up, pop-under, interstitial and in-text link advertisements) cross web browser plugin for Internet Explorer (BHO) and Firefox/Chrome (plugin) and distributed through various monetization platforms during installation. The browser extension includes various features that will modify the default or custom settings of the browser including the home page, search settings and in some cases will modify Internet Explorer’s load time threshold, place a lock file within Firefox to prevent competing software from changing its settings as well as disable the browser’s Content Security Policy in order to allow for cross site scripting of the plugin.

You should always pay attention when installing software because often, a software installer includes optional installs, such as this PUP.Optional.LuaRT.A browser hijacker. Be very careful what you agree to install.
Always opt for the custom installation and deselect anything that is not familiar, especially optional software that you never wanted to download and install in the first place. It goes without saying that you should not install software that you don’t trust.

How to remove PUP.Optional.LuaRT.A (Virus Removal Guide)

This page is a comprehensive guide, which will remove PUP.Optional.LuaRT.A from Internet Explorer, Firefox and Google Chrome.
Please perform all the steps in the correct order. If you have any questions or doubt at any point, STOP and ask for our assistance.
STEP 1: Remove PUP.Optional.LuaRT.A adware with AdwCleaner
STEP 2: Remove PUP.Optional.LuaRT.A browser hijacker with Junkware Removal Tool
STEP 3: Remove PUP.Optional.LuaRT.A virus with Malwarebytes Anti-Malware Free
STEP 4: Double-check for the PUP.Optional.LuaRT.A infection with HitmanPro

STEP 1: Remove PUP.Optional.LuaRT.A adware with AdwCleaner

The AdwCleaner utility will scan your computer for PUP.Optional.LuaRT.A malicious files and registry keys, that may have been installed on your computer without your knowledge.

  1. You can download AdwCleaner utility from the below link.
    ADWCLEANER DOWNLOAD LINK (This link will automatically download AdwCleaner on your computer)
  2. Before starting AdwCleaner, close all open programs and internet browsers, then double-click on the AdwCleaner icon.
    [Image: AdwCleaner Icon]
    If Windows prompts you as to whether or not you wish to run AdwCleaner, please allow it to run.
  3. When the AdwCleaner program will open, click on the Scan button as shown below.
    [Image: Adwcleaner Scan]
    AdwCleaner will now start to search for PUP.Optional.LuaRT.A malicious files that may be installed on your computer.
  4. To remove the PUP.Optional.LuaRT.A malicious files that were detected in the previous step, please click on the Clean button.
    [Image: AdwCleaner removing infections]
    AdwCleaner will now prompt you to save any open files or data as the program will need to reboot the computer. Please do so and then click on the OK button.

STEP 2: Remove PUP.Optional.LuaRT.A browser hijack with Junkware Removal Tool

Junkware Removal Tool is a powerful utility, which will remove PUP.Optional.LuaRT.A virus from Internet Explorer, Firefox or Google Chrome.

  1. You can download the Junkware Removal Tool utility from the below link:
    JUNKWARE REMOVAL TOOL DOWNLOAD LINK (This link will automatically download the Junkware Removal Tool utility on your computer)
  2. Once Junkware Removal Tool has finished downloading, please double-click on the JRT.exe icon as seen below.
    [Image: Junkware Removal Tool]
    If Windows prompts you as to whether or not you wish to run Junkware Removal Tool, please allow it to run.
  3. Junkware Removal Tool will now start, and at the Command Prompt, you’ll need to press any key to perform a scan for the PUP.Optional.LuaRT.A.
    [Image: Junkware Removal Tool scanning for PUP.Optional.LuaRT.A virus]
    Please be patient as this can take a while to complete (up to 10 minutes) depending on your system’s specifications.
  4. When the scan Junkware Removal Tool will be completed, this utility will display a log with the malicious files and registry keys that were removed from your computer.
    [Image: Junkware Removal Tool final log]

STEP 3: Remove PUP.Optional.LuaRT.A virus with Malwarebytes Anti-Malware Free

Malwarebytes Anti-Malware Free utilizes Malwarebytes powerful technology to detect and remove all traces of malware including worms, trojans, rootkits, rogues, dialers, spyware and more.

  1. You can download Malwarebytes Anti-Malware Free from the below link, then double-click on the icon named mbam-setup.exe to install this program.
    MALWAREBYTES ANTI-MALWARE DOWNLOAD LINK(This link will open a download page in a new window from where you can download Malwarebytes Anti-Malware Free)
  2. When the installation begins, keep following the prompts in order to continue with the setup process, then at the last screen click on the Finish button.
    [Image: Malwarebytes Anti-Malware final installation screen]
  3. On the Scanner tab, select Perform quick scan, and then click on the Scan button to start searching for the PUP.Optional.LuaRT.A malicious files.
    [Image: Malwarebytes Anti-Malware Quick Scan]
  4. Malwarebytes’ Anti-Malware will now start scanning your computer for PUP.Optional.LuaRT.A as shown below.
    [Image: Malwarebytes Anti-Malware scanning for PUP.Optional.LuaRT.A virus]
  5. When the Malwarebytes Anti-Malware scan has finished, click on the Show Results button.
    [Image: Malwarebytes Anti-Malware scan results]
  6. You will now be presented with a screen showing you the computer infections that Malwarebytes Anti-Malware has detected. Make sure that everything is Checked (ticked), then click on the Remove Selected button.
    [Image: Malwarebytes Anti-Malware removing PUP.Optional.LuaRT.A]

STEP 4: Double-check for the PUP.Optional.LuaRT.A infection with HitmanPro

HitmanPro is a second opinion scanner, designed to rescue your computer from malware (viruses, trojans, rootkits, etc.) that have infected your computer despite all the security measures you have taken (such as anti virus software, firewalls, etc.).

  1. You can download HitmanPro from the below link:
    HITMANPRO DOWNLOAD LINK (This link will open a web page from where you can download HitmanPro)
  2. Double-click on the file named HitmanPro.exe (for 32-bit versions of Windows) or HitmanPro_x64.exe (for 64-bit versions of Windows). When the program starts you will be presented with the start screen as shown below.
    HitmanPro scanner
    Click on the Next button, to install HitmanPro on your computer.
    HitmanPro installation
  3. HitmanPro will now begin to scan your computer for PUP.Optional.LuaRT.A malicious files.
    HitmanPro detecting for PUP.Optional.LuaRT.A virus
  4. When it has finished it will display a list of all the malware that the program found as shown in the image below. Click on the Next button, to remove PUP.Optional.LuaRT.A adware.
    HitmanPro scan results
  5. Click on the Activate free license button to begin the free 30 days trial, and remove all the malicious files from your computer.
    [Image: HitmanPro 30 days activation button]

Your computer should now be free of the PUP.Optional.LuaRT.A infection. If your current anti-virus solution let this infection through, you may want to consider purchasing the PRO version of Malwarebytes Anti-Malware to protect against these types of threats in the future, and perform regular computer scans with HitmanPro.
If you are still experiencing problems while trying to remove PUP.Optional.LuaRT.A from your machine, please start a new thread in our Malware Removal Assistance forum.

How to Stay Safe Online

Here are 10 basic security tips to help you avoid malware and protect your device:

  1. Use a good antivirus and keep it up-to-date.

    Shield Guide

    It's essential to use a good quality antivirus and keep it up-to-date to stay ahead of the latest cyber threats. We are huge fans of Malwarebytes Premium and use it on all of our devices, including Windows and Mac computers as well as our mobile devices. Malwarebytes sits beside your traditional antivirus, filling in any gaps in its defenses, and providing extra protection against sneakier security threats.

  2. Keep software and operating systems up-to-date.

    updates-guide

    Keep your operating system and apps up to date. Whenever an update is released for your device, download and install it right away. These updates often include security fixes, vulnerability patches, and other necessary maintenance.

  3. Be careful when installing programs and apps.

    install guide

    Pay close attention to installation screens and license agreements when installing software. Custom or advanced installation options will often disclose any third-party software that is also being installed. Take great care in every stage of the process and make sure you know what it is you're agreeing to before you click "Next."

  4. Install an ad blocker.

    Ad Blocker

    Use a browser-based content blocker, like AdGuard. Content blockers help stop malicious ads, Trojans, phishing, and other undesirable content that an antivirus product alone may not stop.

  5. Be careful what you download.

    Trojan Horse

    A top goal of cybercriminals is to trick you into downloading malware—programs or apps that carry malware or try to steal information. This malware can be disguised as an app: anything from a popular game to something that checks traffic or the weather.

  6. Be alert for people trying to trick you.

    warning sign

    Whether it's your email, phone, messenger, or other applications, always be alert and on guard for someone trying to trick you into clicking on links or replying to messages. Remember that it's easy to spoof phone numbers, so a familiar name or number doesn't make messages more trustworthy.

  7. Back up your data.

    backup sign

    Back up your data frequently and check that your backup data can be restored. You can do this manually on an external HDD/USB stick, or automatically using backup software. This is also the best way to counter ransomware. Never connect the backup drive to a computer if you suspect that the computer is infected with malware.

  8. Choose strong passwords.

    lock sign

    Use strong and unique passwords for each of your accounts. Avoid using personal information or easily guessable words in your passwords. Enable two-factor authentication (2FA) on your accounts whenever possible.

  9. Be careful where you click.

    cursor sign

    Be cautious when clicking on links or downloading attachments from unknown sources. These could potentially contain malware or phishing scams.

  10. Don't use pirated software.

    Shady Guide

    Avoid using Peer-to-Peer (P2P) file-sharing programs, keygens, cracks, and other pirated software that can often compromise your data, privacy, or both.

To avoid potential dangers on the internet, it's important to follow these 10 basic safety rules. By doing so, you can protect yourself from many of the unpleasant surprises that can arise when using the web.

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