Backdoor:Win32/Xtrat.B Virus Removal

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

Seeing the Backdoor:Win32/Xtrat.B detection usually means that your computer is in big danger. This malware can correctly be identified as ransomware – sort of malware which ciphers your files and asks you to pay for their decryption. Deleteing it requires some peculiar steps that must be done as soon as possible.

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Backdoor:Win32/Xtrat.B detection is a malware detection you can spectate in your computer. It usually appears after the provoking actions on your computer – opening the suspicious email, clicking the advertisement in the Internet or setting up the program from suspicious resources. From the second it shows up, you have a short time to act until it begins its malicious activity. And be sure – it is far better not to wait for these malicious things.

What is Backdoor:Win32/Xtrat.B virus?

Backdoor:Win32/Xtrat.B is ransomware-type malware. It searches for the files on your disk drive, encrypts it, and then asks you to pay the ransom for receiving the decryption key. Besides making your files inaccessible, this virus also does a lot of damage to your system. It changes the networking settings in order to prevent you from checking out the elimination guides or downloading the anti-malware program. In some cases, Backdoor:Win32/Xtrat.B can also block the launching of anti-malware programs.

Backdoor:Win32/Xtrat.B Summary

Summarizingly, Backdoor:Win32/Xtrat.B ransomware activities in the infected computer are next:

  • The binary contains an unknown PE section name indicative of packing;
  • Authenticode signature is invalid;
  • CAPE detected the Xtreme malware family;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Ciphering the documents located on the victim’s disk drives — so the victim cannot check these files;
  • Blocking the launching of .exe files of anti-malware apps
  • Blocking the launching of installation files of anti-malware programs

Ransomware has been a major problem for the last 4 years. It is difficult to imagine a more damaging malware for both individual users and corporations. The algorithms used in Backdoor:Win32/Xtrat.B (typically, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need more time than our galaxy currently exists, and possibly will exist. But that virus does not do all these bad things immediately – it may require up to a few hours to cipher all of your documents. Hence, seeing the Backdoor:Win32/Xtrat.B detection is a clear signal that you must begin the clearing procedure.

Where did I get the Backdoor:Win32/Xtrat.B?

Common ways of Backdoor:Win32/Xtrat.B spreading are common for all other ransomware variants. Those are one-day landing websites where victims are offered to download and install the free app, so-called bait e-mails and hacktools. Bait emails are a relatively new strategy in malware spreading – you receive the e-mail that mimics some standard notifications about deliveries or bank service conditions shifts. Inside of the email, there is a corrupted MS Office file, or a link which opens the exploit landing page.

Malicious email spam

Malicious email message. This one tricks you to open the phishing website.

Preventing it looks pretty simple, however, still demands a lot of focus. Malware can hide in various spots, and it is better to stop it even before it gets into your system than to rely on an anti-malware program. Common cybersecurity awareness is just an essential item in the modern-day world, even if your interaction with a PC stays on YouTube videos. That can save you a lot of time and money which you would certainly spend while searching for a fixing guide.

Backdoor:Win32/Xtrat.B malware technical details

File Info:

name: B7ACE9DD6FD990D67F08.mlw
path: /opt/CAPEv2/storage/binaries/837055cd51f13c92b43b3e7d9e5a141224bace91d3f39e1a8db5bd7ea5f7e74a
crc32: 37C76C84
md5: b7ace9dd6fd990d67f086dfbe70f9d3b
sha1: 22e1bce177eb9e2b67cf4dc7bd68027f942ca46f
sha256: 837055cd51f13c92b43b3e7d9e5a141224bace91d3f39e1a8db5bd7ea5f7e74a
sha512: 5f07e66270093c52b3d57d7fb91b5ec5a17758532aea746c1cfaf1af744bb3be5c6c7ecf0263543474bfe2e394e803a680b1374310cc66c073a38088e3daa213
ssdeep: 768:NB7+tTFH90iY6W1jwmDzKgEFQXKklzIAn38hwfOgw0c0zova:zCBg31jxPEFQXKkx384bpova
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T145233B22A7BC0571E0721B7C8C9DD119F47E7D311A32B45EF18A1E4E84763D27A2972B
sha3_384: 90dcf1205754eb42c9d97305defb34d90ead1fcc24d5fb3442629cb341705ea85961279e9a39408bb8a2c2c0f5a84114
ep_bytes: 548bec81c4e8f7ffff53565733c08985
timestamp: 1992-06-19 22:22:17

Version Info:

0: [No Data]

Backdoor:Win32/Xtrat.B also known as:

K7AntiVirusBackdoor ( 003708201 )
K7GWBackdoor ( 003708201 )
Elasticmalicious (high confidence)
ESET-NOD32a variant of Win32/Remtasu.O
CynetMalicious (score: 100)
AvastWin32:BackDoor-ABH [Trj]
EmsisoftGen:Variant.Ransom.Loki.22023 (B)
MAXmalware (ai score=100)
RisingBackdoor.Xtrat!1.6A25 (CLASSIC)
SentinelOneStatic AI – Malicious PE
AVGWin32:BackDoor-ABH [Trj]
CrowdStrikewin/malicious_confidence_100% (W)

How to remove Backdoor:Win32/Xtrat.B?

Backdoor:Win32/Xtrat.B malware is incredibly difficult to remove by hand. It stores its files in a variety of locations throughout the disk, and can get back itself from one of the elements. Furthermore, countless changes in the registry, networking settings and Group Policies are quite hard to find and change to the original. It is better to utilize a specific tool – exactly, an anti-malware app. GridinSoft Anti-Malware will definitely fit the most ideal for malware elimination goals.

Remove Backdoor:Win32/Xtrat.B 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 Trojans as shown from our tests with the software, and we assure you that it can remove Backdoor:Win32/Xtrat.B 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

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 Backdoor:Win32/Xtrat.B Trojans

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 Backdoor:Win32/Xtrat.B 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 Backdoor:Win32/Xtrat.B 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 “Backdoor:Win32/Xtrat.B” 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 ( 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 Backdoor:Win32/Xtrat.B Virus

Step 4: Remove Found Threats:

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

Searching Backdoor:Win32/Xtrat.B 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 Backdoor:Win32/Xtrat.B 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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