PUA:Win32/Pearfoos.B!ml Virus Removal

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

PUA:Win32/Pearfoos.B!ml is a potentially unwanted application, also known as a PUA, that is detected by various antivirus software and security tools. Potentially unwanted applications are programs that are not inherently malicious but may exhibit unwanted behaviors or characteristics, such as displaying advertisements or collecting user data without explicit consent.

In the case of PUA:Win32/Pearfoos.B!ml, the program is detected as potentially unwanted because it may display unwanted advertisements, collect user data without consent, or perform other behaviors that could negatively impact the user’s experience.

The program may be installed on a user’s computer without their knowledge or consent, typically through software bundling or other deceptive tactics. Once installed, it may run in the background and perform various actions, such as displaying pop-up ads or tracking user activity.

While PUA:Win32/Pearfoos.B!ml is not inherently malicious, it can be annoying and potentially harmful to the user’s privacy and security. Antivirus software and security tools detect and remove such programs to protect users from unwanted or potentially harmful behaviors. It is always a good idea to be cautious when downloading and installing software and to keep your antivirus software up-to-date to protect your computer from potentially unwanted applications and other types of malware.

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PUA:Win32/Pearfoos.B!ml detection is a virus detection you can spectate in your system. It often appears after the provoking activities on your PC – opening the untrustworthy email messages, clicking the advertisement in the Internet or mounting the program from suspicious sources. From the moment it appears, you have a short time to do something about it until it begins its harmful action. And be sure – it is better not to wait for these malicious things.

What is PUA:Win32/Pearfoos.B!ml virus?

PUA:Win32/Pearfoos.B!ml Summary

In total, PUA:Win32/Pearfoos.B!ml virus activities in the infected system are next:

  • Sample contains Overlay data;
  • Authenticode signature is invalid;
  • Encrypting the files located on the target’s drives — so the victim cannot use these files;
  • Blocking the launching of .exe files of anti-malware programs
  • Blocking the launching of installation files of anti-virus programs

Ransomware has actually been a headache for the last 4 years. It is difficult to realize a more dangerous virus for both individuals and organizations. The algorithms used in PUA:Win32/Pearfoos.B!ml (typically, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need to have a lot more time than our galaxy currently exists, and possibly will exist. However, that malware does not do all these bad things immediately – it can take up to several hours to cipher all of your files. Thus, seeing the PUA:Win32/Pearfoos.B!ml detection is a clear signal that you need to start the clearing process.

Where did I get the PUA:Win32/Pearfoos.B!ml?

Common methods of PUA:Win32/Pearfoos.B!ml spreading are common for all other malware examples. Those are one-day landing websites where victims are offered to download the free app, so-called bait e-mails and hack tools. Bait e-mails are a pretty modern tactic in malware spreading – you get the email that simulates some standard notifications about shipping or bank service conditions changes. Inside of the email, there is a corrupted MS Office file, or a link which leads to the exploit landing page.

Malicious email spam

Malicious email message. This one tricks you into opening a phishing website.

Preventing it looks fairly simple, but still requires a lot of attention. Malware can hide in different places, and it is far better to prevent it even before it gets into your PC than to rely upon an anti-malware program. Standard cybersecurity knowledge is just an essential thing in the modern-day world, even if your relationship with a PC stays on YouTube videos. That can save you a lot of money and time you would spend while looking for a solution.

PUA:Win32/Pearfoos.B!ml malware technical details

File Info:

name: CFC34654FD7C85452AD1.mlw
path: /opt/CAPEv2/storage/binaries/0fe5dd6823d0535509e388d92a1e9b23642949564fdc7e29f271d9d8724646bd
crc32: 513A2157
md5: cfc34654fd7c85452ad1e745a0d3791f
sha1: 3dedf4e56a272b22487e4424d511842f44394fae
sha256: 0fe5dd6823d0535509e388d92a1e9b23642949564fdc7e29f271d9d8724646bd
sha512: adfe4d9a4b46f396699864c10c3eeab7dd15ad7c8f2fe758fb32e11302821adbe4f616eba9c84e4b80949a65e5d8238d1ade3540b4d1b525ad8f75e91a3d758e
ssdeep: 6144:uW6Tc6vJfHpLxOeds9FYIxW3+WOMjvEV4UgIhzE62Km4:uzcOBHpLxOeds9fxWtjcVXr
type: PE32+ executable (GUI) x86-64, for MS Windows
tlsh: T1D6941A256AC0A62BF1739235C6A18641FF36B7634722C23B70C8467F1F77185AA73726
sha3_384: aa7369317b74b07c73ca2a69bb36541271775bc59cc98bdfa7d88bd6eca49c46c5e041183703abe44af5ca6b6a312402
ep_bytes: e848feffffc82000004c897c24f84883
timestamp: 2010-09-30 17:49:43

Version Info:

CompanyName: Microsoft Corporation
FileDescription: qualauncher
FileVersion: 10.0.17134.10074 (WinBuild.160101.0800)
InternalName: qualauncher
LegalCopyright: © Microsoft Corporation. All rights reserved.
OriginalFilename: qualauncher
ProductName: Microsoft® Windows® Operating System
ProductVersion: 10.0.17134.10074
Translation: 0x0409 0x04b0

PUA:Win32/Pearfoos.B!ml also known as:

Elasticmalicious (high confidence)
CynetMalicious (score: 100)
EmsisoftGen:Variant.Cerbu.155294 (B)
MAXmalware (ai score=88)
RisingRansom.Agent!8.6B7 (TFE:dGZlOgRk8TKvhTnFFA)

How to remove PUA:Win32/Pearfoos.B!ml?

PUA:Win32/Pearfoos.B!ml malware is incredibly difficult to eliminate by hand. It puts its documents in a variety of places throughout the disk, and can recover itself from one of the elements. Moreover, a number of changes in the windows registry, networking settings and also Group Policies are quite hard to locate and return to the original. It is far better to make use of a special app – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the most ideal for virus elimination objectives.

Remove PUA:Win32/Pearfoos.B!ml with Gridinsoft Anti-Malware

We have also been using this software on our systems ever since, and it has always been successful in detecting viruses. It has blocked the most common Unwanted Applications as shown from our tests with the software, and we assure you that it can remove PUA:Win32/Pearfoos.B!ml as well as other malware hiding on your computer.

Gridinsoft Anti-Malware - Main Screen

To use Gridinsoft for remove malicious threats, follow the steps below:

1. Begin by downloading Gridinsoft Anti-Malware, accessible via the blue button below or directly from the official website gridinsoft.com.

2.Once the Gridinsoft setup file (setup-gridinsoft-fix.exe) is downloaded, execute it by clicking on the file.


3.Follow the installation setup wizard's instructions diligently.

Gridinsoft Setup Wizard

4. Access the "Scan Tab" on the application's start screen and launch a comprehensive "Full Scan" to examine your entire computer. This inclusive scan encompasses the memory, startup items, the registry, services, drivers, and all files, ensuring that it detects malware hidden in all possible locations.

Scan for PUA:Win32/Pearfoos.B!ml Unwanted Applications

Be patient, as the scan duration depends on the number of files and your computer's hardware capabilities. Use this time to relax or attend to other tasks.

5. Upon completion, Anti-Malware will present a detailed report containing all the detected malicious items and threats on your PC.

The PUA:Win32/Pearfoos.B!ml was Found

6. Select all the identified items from the report and confidently click the "Clean Now" button. This action will safely remove the malicious files from your computer, transferring them to the secure quarantine zone of the anti-malware program to prevent any further harmful actions.

The PUA:Win32/Pearfoos.B!ml has been removed

8. If prompted, restart your computer to finalize the full system scan procedure. This step is crucial to ensure thorough removal of any remaining threats. After the restart, Gridinsoft Anti-Malware will open and display a message confirming the completion of the scan.

Remember Gridinsoft offers a 6-day free trial. This means you can take advantage of the trial period at no cost to experience the full benefits of the software and prevent any future malware infections on your system. Embrace this opportunity to fortify your computer's security without any financial commitment.

Trojan Killer for “PUA:Win32/Pearfoos.B!ml” removal on locked PC

In situations where it becomes impossible to download antivirus applications directly onto the infected computer due to malware blocking access to websites, an alternative solution is to utilize the Trojan Killer application.

Trojan Killer - Main View

There is a really little number of security tools that are able to be set up on the USB drives, and antiviruses that can do so in most cases require to obtain quite an expensive license. For this instance, I can recommend you to use another solution of GridinSoft - Trojan Killer Portable. It has a 14-days cost-free trial mode that offers the entire features of the paid version. This term will definitely be 100% enough to wipe malware out.

Trojan Killer is a valuable tool in your cybersecurity arsenal, helping you to effectively remove malware from infected computers. Now, we will walk you through the process of using Trojan Killer from a USB flash drive to scan and remove malware on an infected PC. Remember, always obtain permission to scan and remove malware from a computer that you do not own.

Step 1: Download & Install Trojan Killer on a Clean Computer:

1. Go to the official GridinSoft website (gridinsoft.com) and download Trojan Killer to a computer that is not infected.

Download Trojan Killer

2. Insert a USB flash drive into this computer.

3. Install Trojan Killer to the "removable drive" following the on-screen instructions.

Install Trojan Killer to Removable Drive

4. Once the installation is complete, launch Trojan Killer.

Step 2: Update Signature Databases:

5. After launching Trojan Killer, ensure that your computer is connected to the Internet.

6. Click "Update" icon to download the latest signature databases, which will ensure the tool can detect the most recent threats.

Click Update Button

Step 3: Scan the Infected PC:

7. Safely eject the USB flash drive from the clean computer.

8. Boot the infected computer to the Safe Mode.

9. Insert the USB flash drive.

10. Run tk.exe

11. Once the program is open, click on "Full Scan" to begin the malware scanning process.

Searching PUA:Win32/Pearfoos.B!ml Virus

Step 4: Remove Found Threats:

12. After the scan is complete, Trojan Killer will display a list of detected threats.

Searching PUA:Win32/Pearfoos.B!ml Finished

13. Click on "Cure PC!" to remove the identified malware from the infected PC.

14. Follow any additional on-screen prompts to complete the removal process.

Restart needed

Step 5: Restart Your Computer:

15. Once the threats are removed, click on "Restart PC" to reboot your computer.

16. Remove the USB flash drive from the infected computer.

Congratulations on effectively removing PUA:Win32/Pearfoos.B!ml and the concealed threats from your computer! You can now have peace of mind, knowing that they won't resurface again. Thanks to Gridinsoft's capabilities and commitment to cybersecurity, your system is now protected.

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About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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