PUP-FNK

Detected by Malwarebytes

PUP-FNK is deemed as potentially unwanted program that performs malicious actions once installed on the computer. This detection by Malwarebytes Anti-Malware program is given to specific software that user may optionally install together with third-party application. However, due to lack of notification during the install process, PUP-FNK often gets into the PC without user's knowledge. Thus, you may see unwanted program called ClearThink on the computer without a notice.

Threat behavior

Installation

In usual situation, PUP-FNK is bundled to freeware or shareware applications. In fact, there may be other unwanted programs that are packed to the main software that users preferred to obtain. Authors behind malicious programs are utilizing pay-per-install scheme to deploy their products over the Internet.

There are also instances that malware are being used to deploy PUP-FNK. In this case, the threat can be acquired when visiting malicious web pages, downloading compromised files, or using file-sharing apps. Links from spam emails and social media sites are also one medium consumed by attacker to spread PUP-FNK.

Payload

Once PUP-FNK is run on the computer, it targets mostly known browsers like Internet Explorer, Google Chrome, Mozilla Firefox, and Safari. This threat performs changes on browser settings that may result to home page hijacking and browser redirect problems. PUP-FNK also drops extension, add-on, and plug-in to achieve other malicious tasks.

To start instantly when browser is opened, PUP-FNK installs itself as browser helper object. This also gives the malware to have control on the browser and install its own search engine and toolbar object.

Symptoms

Presence of PUP-FNK affects your installed browser program. Here are some obvious signs that the malware has invaded the computer.

  • Modified start page, home page or search engine
  • Constant redirect to unwanted web sites
  • Excessive display of pop-up advertisements
  • Browser and new tabs opens on its own

How can you remove PUP-FNK?

To totally remove PUP-FNK from the computer and get rid of relevant adware, please execute the procedures as stated on this page. Make sure that you have completely scan the system with suggested malware removal tools and virus scanners.

First step: Scan the computer with Malwarebytes Anti-Malware

1. Download Malwarebytes Anti-Malware from the link below. Save the file on your hard drive.

MBAM Download Link (this will open on a new window)

2. Once the download completes, double-click on the file MBAM-SETUP.EXE to run the program.

3. Select desired installation language when it prompts you.Then, click OK.

4. On the welcome screen, it will ask you to close all opened programs and disable ant-virus and firewall, please do so to avoid conflicts. Then click Next.

MBAM-welcome

5. Next window is about License Agreement, you must accept this and click the Next button. Proceed with the succeeding prompts until you reach the window Ready to Install. Click on Install button.

6. Installation process will take less than a minute. Leave "Launch Malwarebytes Anti-Malware" with check mark. Then, click on Finish to run the program.

MBAM-finish

7. When Malwarebytes Anti-Malware interface appears, please select Threat Scan. Click on Scan Now button to begin the process. The program will check for any available update before proceeding. Do not skip this step. Virus scan may take a while, please wait for the process to finish.

MBAM-threatscan

8. When scanning is done, Malwarebytes Anti-Malware will display the list of identified threats. Remove all and restart the computer to finalized the scan process.

Second step: Run AdwCleaner to totally remove PUP-FNK

1. Download the tool called AdwCleaner from the location stated below.

AdwCleaner Download Link (this will open a new window).

2. Once you have completed the download, please close all running programs on the computer.

3. Locate the file and double-click on adwcleaner.exe to start running the tool.

AdwCleaner

4. It searches for presence of harmful programs, plug-ins, add-ons, or any data that were found malicious and linked to PUP-FNK. You may have to delete each detected item.

5. Once scan is done, the tool may need to reboot your computer to finalize the cleaning process.

6. After reboot, open AdwCleaner once more. Click on Uninstall to remove this program from your computer.

Third step: Cleanup the Browser using Avast Browser Cleanup

1. Download this free tool and save it to your desktop.

Avast Browser Cleanup Download Link (This will open in a new window).

2. You do not need to install the program. This portable scanner will run automatically once you double-click on the the executable file avast-browser-cleanup.exe. This is effective in deleting PUP-FNK entries from the browser.

3. When run, Avast Browser Cleanup performs a test on the browser. If unwanted entries were found, it will display a button 'Remove all add-ons listed below and cleanup browser.' You may remove all or delete one entry at a time.

Avast Browser Scanner

4. Avast Browser Cleanup will confirm before it permanently deletes the add-on. Please click Yes to proceed with the removal of PUP-FNK on the affected browser.

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