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

What is Win32/Filecoder.NIB infection?

In this short article you will certainly find concerning the definition of Win32/Filecoder.NIB and also its unfavorable impact on your computer system. Such ransomware are a type of malware that is elaborated by on-line scams to demand paying the ransom money by a victim.

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In the majority of the situations, Win32/Filecoder.NIB virus will advise its targets to start funds move for the function of counteracting the amendments that the Trojan infection has introduced to the victim’s gadget.

Win32/Filecoder.NIB Summary

These adjustments can be as follows:

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the victim’s hard drive — so the target can no more make use of the data;
  • Preventing normal accessibility to the victim’s workstation;
Similar behavior
Related domains Application.RansomTest.A Application.RansomTest.A


The most typical networks where Win32/Filecoder.NIB are injected are:

  • By methods of phishing emails;
  • As an effect of user ending up on a source that hosts a harmful software program;

As quickly as the Trojan is effectively injected, it will either cipher the data on the target’s PC or avoid the device from working in a correct manner – while also putting a ransom money note that discusses the requirement for the targets to impact the settlement for the function of decrypting the records or restoring the file system back to the first problem. In a lot of instances, the ransom money note will certainly come up when the customer reboots the COMPUTER after the system has currently been damaged.

Win32/Filecoder.NIB circulation networks.

In different corners of the globe, Win32/Filecoder.NIB expands by leaps as well as bounds. Nonetheless, the ransom money notes and also techniques of extorting the ransom money quantity might vary depending upon particular regional (local) setups. The ransom notes and methods of obtaining the ransom money quantity might vary depending on specific regional (local) settings.

Ransomware injection

For instance:

    Faulty alerts about unlicensed software program.

    In certain areas, the Trojans usually wrongfully report having actually discovered some unlicensed applications made it possible for on the victim’s device. The alert after that demands the user to pay the ransom money.

    Faulty statements regarding illegal content.

    In countries where software application piracy is less prominent, this approach is not as efficient for the cyber scams. Alternatively, the Win32/Filecoder.NIB popup alert might falsely declare to be stemming from a law enforcement institution and also will report having situated kid pornography or other illegal data on the tool.

    Win32/Filecoder.NIB popup alert may incorrectly declare to be deriving from a regulation enforcement organization as well as will certainly report having located kid pornography or various other prohibited information on the gadget. The alert will likewise have a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: F4F0A35F
md5: 4c262d5ab4bf8586d303bfa91a05b42b
name: 4C262D5AB4BF8586D303BFA91A05B42B.mlw
sha1: 4f9e23d0d7600a18d8249dfcb2f60d58deab5071
sha256: 91fe5ece5b64aff83b9eb0e0ba1b681985d355dcf54864e529570973234e1d1c
sha512: 3bd125a9e41b377f4affc75d42cd0ca87ce16c4eb24a849b8df2cc0f7f864ff0d86a5e70b7d70ca86d225ae2413a65b3938baa74d8fe6b0004a935a47e4b4b36
ssdeep: 3072:AOEiZgX6/7gtUlLxCalLFFvfQsHrcVJ949SyvvyfswklZiEQDG:A9OgX6/E0LJbp/Lct49LbPlUEQDG
type: PE32 executable (console) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Filecoder.NIB also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0055e3ef1 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.6258
Cynet Malicious (score: 100)
ALYac Application.RansomTest.A
Cylance Unsafe
Zillya Trojan.Filecoder.Win32.3375
Sangfor Trojan.Win32.Save.a
Alibaba Ransom:Win32/FileCryptor.515c8462
K7GW Trojan ( 0055e3ef1 )
Cybereason malicious.ab4bf8
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Filecoder.NIB
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Agent.iue
BitDefender Application.RansomTest.A
NANO-Antivirus Trojan.Win32.Encoder.filohb
MicroWorld-eScan Application.RansomTest.A
Ad-Aware Application.RansomTest.A
BitDefenderTheta AI:Packer.AFE3971D1F
VIPRE Trojan.Win32.Generic!BT
Emsisoft Application.RansomTest.A (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Agent.amni
Webroot W32.Trojan.Gen
Avira TR/Dropper.Gen
Antiy-AVL Trojan/Generic.ASMalwS.1F4B4C5
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Ransom:Win32/FileCryptor
Arcabit Application.RansomTest.A
AegisLab Test.Win32.Generic.y!c
GData Application.RansomTest.A
AhnLab-V3 Trojan/Win32.RL_Ransom.R364989
McAfee GenericR-ITQ!4C262D5AB4BF
MAX malware (ai score=99)
VBA32 TrojanRansom.Agent
Panda Trj/GdSda.A
Tencent Malware.Win32.Gencirc.114bb745
Yandex Trojan.GenAsa!/Dx9iF7R37k
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Generic.AC.38D028!tr
AVG Win32:Malware-gen

How to remove Win32/Filecoder.NIB ransomware?

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.NIB 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.NIB 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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