Win32/Filecoder.Medusa.A Virus Removal

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

Spectating the Win32/Filecoder.Medusa.A detection name usually means that your computer is in big danger. This malware can correctly be identified as ransomware – type of malware which encrypts your files and asks you to pay for their decryption. Stopping it requires some unusual steps that must be taken as soon as possible.

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Win32/Filecoder.Medusa.A detection is a virus detection you can spectate in your computer. It frequently appears after the preliminary procedures on your PC – opening the suspicious email messages, clicking the advertisement in the Internet or setting up the program from dubious resources. From the second it appears, you have a short time to take action before it begins its destructive action. And be sure – it is better not to wait for these harmful things.

What is Win32/Filecoder.Medusa.A virus?

Win32/Filecoder.Medusa.A is ransomware-type malware. It searches for the documents on your disk drive, encrypts it, and then asks you to pay the ransom for getting the decryption key. Besides making your documents locked, this malware also does a lot of damage to your system. It changes the networking setups in order to stop you from looking for the elimination tutorials or downloading the antivirus. In some cases, Win32/Filecoder.Medusa.A can also prevent the launching of anti-malware programs.

Win32/Filecoder.Medusa.A Summary

In total, Win32/Filecoder.Medusa.A ransomware actions in the infected PC are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • A file was accessed within the Public folder.;
  • Uses Windows utilities for basic functionality;
  • CAPE extracted potentially suspicious content;
  • Authenticode signature is invalid;
  • A scripting utility was executed;
  • Uses suspicious command line tools or Windows utilities;
  • Encrypting the documents kept on the target’s disk — so the victim cannot check these files;
  • Blocking the launching of .exe files of anti-virus programs
  • Blocking the launching of installation files of anti-virus programs

Ransomware has been a headache for the last 4 years. It is hard to picture a more hazardous malware for both individual users and corporations. The algorithms utilized in Win32/Filecoder.Medusa.A (generally, 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 actually exists, and possibly will exist. However, that virus does not do all these unpleasant things without delay – it may take up to a few hours to cipher all of your documents. Therefore, seeing the Win32/Filecoder.Medusa.A detection is a clear signal that you should begin the removal procedure.

Where did I get the Win32/Filecoder.Medusa.A?

Typical tactics of Win32/Filecoder.Medusa.A distribution are standard for all other ransomware variants. Those are one-day landing sites where victims are offered to download and install the free program, so-called bait e-mails and hacktools. Bait emails are a pretty new tactic in malware distribution – you receive the e-mail that mimics some routine notifications about shippings 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 fairly easy, however, still needs tons of recognition. Malware can hide in different spots, and it is much better to prevent it even before it goes into your computer than to trust in an anti-malware program. Essential cybersecurity knowledge is just an important thing in the modern-day world, even if your relationship with a computer stays on YouTube videos. That can keep you a lot of time and money which you would certainly spend while seeking a fix guide.

Win32/Filecoder.Medusa.A malware technical details

File Info:

name: 84B88AC81E4872FF3BF1.mlw
path: /opt/CAPEv2/storage/binaries/4d4df87cf8d8551d836f67fbde4337863bac3ff6b5cb324675054ea023b12ab6
crc32: BBA275E7
md5: 84b88ac81e4872ff3bf15c72f431d101
sha1: 0823d067541de16325e5454a91b57262365a0705
sha256: 4d4df87cf8d8551d836f67fbde4337863bac3ff6b5cb324675054ea023b12ab6
sha512: 185691b0103669c5aa25b22c36f29ddb66f074e0f2e3ae6a36ed8917c35f1fba71fba65c11c3211ce64f6c5919ac879ce0fdcc4dddae420cbecf40711dff1860
ssdeep: 12288:V4eCA30wfnlxvaUwZNf6qYID7ZJuIQOsknZh20QyCkje0ZM7qgbGKTO7muYpralU:3C8valgsDyfSBKXyMUkW2LILGBm3IzPB
type: PE32 executable (console) Intel 80386, for MS Windows
tlsh: T1F8D49E257482C076D67302314D5CEBB6617FFC314B730EEBA7805A6E5A381E16E3297A
sha3_384: 5dbfd4518d63bc08d243e158733c671449ad841e1a0218b02c067214c74e1bb3ffcd1b1f34e2cb39bbe6c521c95926ec
ep_bytes: e8ad080000e974feffffcccccc518d4c
timestamp: 2021-12-21 16:10:08

Version Info:

0: [No Data]

Win32/Filecoder.Medusa.A also known as:

Bkav W32.Common.488D6DB8
Lionic Trojan.Win32.Generic.4!c
MicroWorld-eScan Gen:Heur.Ransom.Imps.1
ALYac Trojan.Ransom.Filecoder
Cylance unsafe
VIPRE Gen:Heur.Ransom.Imps.1
Sangfor Ransom.Win32.Medusa.Vryw
BitDefender Gen:Heur.Ransom.Imps.1
K7GW Trojan ( 0059f3a21 )
K7AntiVirus Trojan ( 0059f3a21 )
BitDefenderTheta Gen:NN.ZexaF.36792.NuW@aa!uzUki
Symantec Ransom.Gen
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/Filecoder.Medusa.A
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan-Ransom.Win32.Generic
Alibaba Ransom:Win32/MedusaLocker.a7ccc022
NANO-Antivirus Trojan.Win32.Filecoder.kbqsmi
ViRobot Trojan.Win.Z.Ransom.639488.A
Rising Ransom.Medusa!8.11358 (TFE:5:KBPbXLchhYC)
F-Secure Heuristic.HEUR/AGEN.1318692
Zillya Trojan.Generic.Win32.1807576
TrendMicro Ransom.Win32.MEDUSA.SM
Sophos Mal/Medusa-C
Jiangmin Trojan.Generic.hrdek
Google Detected
Avira HEUR/AGEN.1318692
MAX malware (ai score=87)
Antiy-AVL Trojan[Ransom]/Win32.Medusa
Kingsoft Win32.Trojan-Ransom.Generic.a
Arcabit Trojan.Ransom.Imps.1
ZoneAlarm HEUR:Trojan-Ransom.Win32.Generic
GData Gen:Heur.Ransom.Imps.1
Varist W32/ABRisk.HCST-0344
AhnLab-V3 Ransomware/Win.MEDUSALOCKER.C5402963
DeepInstinct MALICIOUS
VBA32 BScope.TrojanPSW.Stealer
Malwarebytes Ransom.Medusa
Panda Trj/GdSda.A
Tencent Malware.Win32.Gencirc.10bf15e6
Ikarus Trojan-Ransom.Medusa
MaxSecure Trojan.Malware.10307848.susgen
Fortinet W32/Filecoder.MEDU!tr.ransom
AVG Win32:RansomX-gen [Ransom]
Avast Win32:RansomX-gen [Ransom]

How to remove Win32/Filecoder.Medusa.A?

Win32/Filecoder.Medusa.A malware is very difficult to eliminate manually. It stores its documents in several locations throughout the disk, and can get back itself from one of the parts. In addition, numerous changes in the registry, networking configurations and also Group Policies are really hard to find and change to the original. It is better to use a specific program – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the most ideal for virus removal goals.

Remove Win32/Filecoder.Medusa.A 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 Win32/Filecoder.Medusa.A 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 Win32/Filecoder.Medusa.A 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 Win32/Filecoder.Medusa.A 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 Win32/Filecoder.Medusa.A 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 “Win32/Filecoder.Medusa.A” 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 Win32/Filecoder.Medusa.A Virus

Step 4: Remove Found Threats:

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

Searching Win32/Filecoder.Medusa.A 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 Win32/Filecoder.Medusa.A 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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