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

What is Win32/Filecoder.JSWorm.C infection?

In this article you will discover about the meaning of Win32/Filecoder.JSWorm.C and also its negative effect on your computer system. Such ransomware are a type of malware that is specified by online scams to require paying the ransom money by a sufferer.

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Most of the instances, Win32/Filecoder.JSWorm.C virus will instruct its sufferers to launch funds transfer for the purpose of neutralizing the changes that the Trojan infection has introduced to the target’s gadget.

Win32/Filecoder.JSWorm.C Summary

These modifications can be as adheres to:

  • A process created a hidden window;
  • Uses Windows utilities for basic functionality;
  • Attempts to stop active services;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Creates a copy of itself;
  • Ciphering the papers located on the victim’s hard disk drive — so the victim can no longer utilize the data;
  • Preventing regular access to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


The most normal networks where Win32/Filecoder.JSWorm.C Trojans are injected are:

  • By means of phishing e-mails;
  • As a consequence of customer winding up on a resource that hosts a malicious software;

As soon as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s PC or protect against the gadget from functioning in a correct way – while additionally putting a ransom note that states the need for the victims to effect the repayment for the function of decrypting the files or recovering the data system back to the preliminary problem. In the majority of circumstances, the ransom money note will certainly come up when the client restarts the COMPUTER after the system has already been harmed.

Win32/Filecoder.JSWorm.C circulation channels.

In different edges of the world, Win32/Filecoder.JSWorm.C expands by leaps and bounds. Nevertheless, the ransom money notes as well as techniques of extorting the ransom amount might differ depending upon certain local (regional) settings. The ransom money notes and methods of extorting the ransom quantity might differ depending on particular regional (local) settings.

Ransomware injection

As an example:

    Faulty signals about unlicensed software program.

    In specific locations, the Trojans often wrongfully report having actually identified some unlicensed applications made it possible for on the sufferer’s tool. The sharp after that demands the customer to pay the ransom money.

    Faulty declarations concerning unlawful material.

    In countries where software application piracy is less popular, this approach is not as reliable for the cyber fraudulences. Conversely, the Win32/Filecoder.JSWorm.C popup alert may falsely assert to be stemming from a police organization and also will report having located kid porn or various other unlawful data on the tool.

    Win32/Filecoder.JSWorm.C popup alert may incorrectly assert to be acquiring from a law enforcement establishment and will certainly report having situated kid pornography or other unlawful information on the gadget. The alert will in a similar way contain a need for the user to pay the ransom.

Technical details

File Info:

crc32: 21205632
md5: bb02350fc8eb8db051702042975786a8
name: BB02350FC8EB8DB051702042975786A8.mlw
sha1: fcc9b5a4722a70f9b17f15b4c2411bc01dc385a3
sha256: a0a1fa5d66c4e3de1d7be24ca02cb0ca65721735d42a5b45572a0f40961251c5
sha512: 868fffb875733ffd2c6795a83ef10e78640465e50b86cd5b5d94366c5fe5e18e1db6d587f5579986fdd7ef9a2ab100a77ae4a0a1741d0082860de1ce59e6f324
ssdeep: 12288:ywbmsSMUoycSzYKJu1spJRaoEYj/EAEqGV2V2X62iz+yEFu08Rk+nav:y1sucSz3u1wadAEqcXQs
type: PE32 executable (console) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Filecoder.JSWorm.C also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 0054e6741 )
DrWeb Trojan.Encoder.28477
Cynet Malicious (score: 99)
ALYac Trojan.Ransom.JSWorm
Cylance Unsafe
Zillya Trojan.Filecoder.Win32.9453
Sangfor Trojan.Win32.Save.a
Alibaba Trojan:Win32/DelShad.83f38430
K7GW Trojan ( 0054e6741 )
Cybereason malicious.fc8eb8
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Filecoder.JSWorm.C
Avast Win32:Trojan-gen
BitDefender Trojan.GenericKD.32051170
NANO-Antivirus Trojan.Win32.DelShad.frsqtu
MicroWorld-eScan Trojan.GenericKD.32051170
Tencent Win32.Trojan.Delshad.Pepe
Ad-Aware Trojan.GenericKD.32051170
Sophos Mal/Generic-S
Comodo Malware@#1osie9j2ongxt
F-Secure Trojan.TR/FileCoder.ktkgz
BitDefenderTheta Gen:NN.ZexaF.34722.zqW@aay0OYg
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom.Win32.JSWORM.SM
McAfee-GW-Edition Trojan-FQZW!BB02350FC8EB
FireEye Trojan.GenericKD.32051170
Emsisoft Trojan.FileCoder (A)
Jiangmin Trojan.DelShad.bp
Avira TR/FileCoder.ktkgz
eGambit Unsafe.AI_Score_100%
Antiy-AVL Trojan/Generic.ASMalwS.2BE32E8
Microsoft Trojan:Win32/Malex.gen!E
Arcabit Trojan.Generic.D1E90FE2
AegisLab Trojan.Win32.DelShad.4!c
GData Win32.Trojan-Ransom.Filecoder.CF@gen
TACHYON Ransom/W32.DelShad.419840
AhnLab-V3 Trojan/Win32.FileCoder.R276135
McAfee Trojan-FQZW!BB02350FC8EB
VBA32 BScope.Trojan.StartPage
Malwarebytes Generic.Malware/Suspicious
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom.Win32.JSWORM.SM
Yandex Trojan.GenAsa!jnaeNLf7tVI
Ikarus Trojan-Ransom.FileCrypter
MaxSecure Trojan.Malware.74386750.susgen
Fortinet W32/Filecoder.NVV!tr.ransom
AVG Win32:Trojan-gen

How to remove Win32/Filecoder.JSWorm.C virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Win32/Filecoder.JSWorm.C files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

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If the guide doesn’t help you to remove Win32/Filecoder.JSWorm.C you can always ask me in the comments for getting help.

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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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