Win32/Filecoder.NUX

What is Win32/Filecoder.NUX infection?

In this post you will find regarding the definition of Win32/Filecoder.NUX and also its negative influence on your computer. Such ransomware are a form of malware that is clarified by on the internet frauds to require paying the ransom by a sufferer.

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In the majority of the situations, Win32/Filecoder.NUX ransomware will certainly instruct its targets to initiate funds move for the purpose of counteracting the modifications that the Trojan infection has presented to the victim’s gadget.

Win32/Filecoder.NUX Summary

These adjustments can be as adheres to:

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • Uses Windows utilities for basic functionality;
  • Attempts to modify desktop wallpaper;
  • 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
  • Writes a potential ransom message to disk;
  • Ciphering the papers found on the sufferer’s disk drive — so the sufferer can no more make use of the information;
  • Preventing routine accessibility 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.

Win32/Filecoder.NUX

One of the most normal networks through which Win32/Filecoder.NUX Trojans are injected are:

  • By methods of phishing emails;
  • As a consequence of user winding up on a resource that organizes a destructive software program;

As soon as the Trojan is efficiently injected, it will either cipher the information on the target’s PC or avoid the gadget from operating in a correct manner – while likewise positioning a ransom money note that mentions the need for the victims to effect the settlement for the function of decrypting the documents or restoring the file system back to the initial problem. In a lot of circumstances, the ransom money note will turn up when the client reboots the PC after the system has actually currently been damaged.

Win32/Filecoder.NUX distribution channels.

In various edges of the globe, Win32/Filecoder.NUX expands by jumps and also bounds. Nevertheless, the ransom money notes and also techniques of extorting the ransom amount may vary depending upon particular neighborhood (local) setups. The ransom money notes and also techniques of extorting the ransom quantity may vary depending on certain local (regional) settings.

Ransomware injection

As an example:

    Faulty informs concerning unlicensed software application.

    In specific areas, the Trojans usually wrongfully report having identified some unlicensed applications made it possible for on the victim’s tool. The sharp after that demands the customer to pay the ransom.

    Faulty declarations regarding illegal material.

    In countries where software piracy is much less popular, this approach is not as reliable for the cyber frauds. Conversely, the Win32/Filecoder.NUX popup alert may falsely declare to be deriving from a law enforcement institution as well as will certainly report having situated kid porn or other unlawful information on the device.

    Win32/Filecoder.NUX popup alert may falsely assert to be obtaining from a legislation enforcement institution and also will report having situated kid pornography or other prohibited information on the gadget. The alert will likewise consist of a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: 725E5EFC
md5: 4f029ba5cccc075a5132565eb3eabccc
name: 4F029BA5CCCC075A5132565EB3EABCCC.mlw
sha1: 837e5c5e87d0179b5a32793a105734aa1906d7be
sha256: 8a28d340e9df3c693f39e13466a2b2cc7eaf9d21cff2bb4bd9cfe7e69b01e0ac
sha512: b46e054554ea854cad393f9f145f4a2f937c93bb4d871f8531fb7097e4889e7b5906430454220f5a3a3be561bff39ad7578e2fcc1c4c1b9fe6e256206886705e
ssdeep: 24576:MkeJP6OCGJsf5fFtsF2l0ye6vcON71Rv:MkeJP6OCnBrsFlvs7
type: PE32 executable (console) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Win32/Filecoder.NUX also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Riskware ( 0040eff71 )
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.Filecoder
Cylance Unsafe
Zillya Trojan.Encoder.Win32.437
Sangfor Trojan.Win32.Save.a
Alibaba Trojan:Win32/Filecoder.9c417596
K7GW Riskware ( 0040eff71 )
Cybereason malicious.5cccc0
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Filecoder.NUX
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Encoder.atj
BitDefender Gen:Heur.Ransom.REntS.Gen.1
NANO-Antivirus Trojan.Win32.Encoder.fkffxs
ViRobot Trojan.Win32.S.Agent.840704.CL
MicroWorld-eScan Gen:Heur.Ransom.REntS.Gen.1
Tencent Win32.Trojan.Encoder.Pdmg
Ad-Aware Gen:Heur.Ransom.REntS.Gen.1
Sophos Mal/Generic-S
Comodo Malware@#3g90a4g79r5ko
BitDefenderTheta Gen:NN.ZexaF.34670.ZmGfaGVxPFpi
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Dropper.cc
FireEye Generic.mg.4f029ba5cccc075a
Emsisoft Gen:Heur.Ransom.REntS.Gen.1 (B)
Avira TR/Crypt.ULPM.Gen
Antiy-AVL Trojan[Ransom]/Win32.Encoder
Microsoft Ransom:Win32/Genasom
Arcabit Trojan.Ransom.REntS.Gen.1
AegisLab Trojan.Win32.Imps.4!c
GData Gen:Heur.Ransom.REntS.Gen.1
AhnLab-V3 Malware/Win32.Generic.C2889060
McAfee Artemis!4F029BA5CCCC
MAX malware (ai score=100)
VBA32 TrojanRansom.Encoder
Malwarebytes Malware.Heuristic.1003
Panda Trj/CI.A
Rising Ransom.Encoder!8.FFD4 (CLOUD)
Yandex Trojan.GenAsa!SXQHH4ms6Ic
Ikarus Trojan-Ransom.Rokku
Fortinet W32/Encoder.ATJ!tr.ransom
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Encoder.HwsBEpsA

How to remove Win32/Filecoder.NUX 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.NUX 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.NUX you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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