Win32/Filecoder.NOH

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

What is Win32/Filecoder.NOH infection?

In this article you will certainly discover about the meaning of Win32/Filecoder.NOH as well as its unfavorable influence on your computer system. Such ransomware are a kind of malware that is specified by on the internet fraudulences to demand paying the ransom by a target.

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Most of the cases, Win32/Filecoder.NOH ransomware will certainly advise its victims to launch funds move for the objective of neutralizing the amendments that the Trojan infection has actually introduced to the victim’s tool.

Win32/Filecoder.NOH Summary

These alterations can be as follows:

  • Possible date expiration check, exits too soon after checking local time;
  • A process attempted to delay the analysis task.;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • A process created a hidden window;
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • 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!
  • Modifies boot configuration settings;
  • 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 hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Clears Windows events or logs;
  • Attempts to disable UAC.

    User Account Control or just UAC is a part of the Windows security system which prevents apps from making unwanted changes on PC.

    UAC includes several technologies 1:

    • File and egistry Virtualization;
    • Same-desktop Elevation;
    • Filtered Token;
    • User Interface Privilege Isolation;
    • Protected Mode Internet Explorer;
    • Installer Detection;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers located on the sufferer’s hard disk — so the sufferer can no longer make use of the information;
  • Preventing routine accessibility to the sufferer’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.NOH

One of the most regular channels where Win32/Filecoder.NOH Ransomware Trojans are infused are:

  • By ways of phishing e-mails;
  • As a consequence of user winding up on a source that holds a harmful software;

As quickly as the Trojan is successfully infused, it will either cipher the information on the sufferer’s PC or avoid the tool from functioning in a proper fashion – while also positioning a ransom money note that discusses the demand for the victims to impact the payment for the purpose of decrypting the documents or bring back the file system back to the first problem. In the majority of instances, the ransom money note will certainly come up when the customer restarts the PC after the system has actually currently been harmed.

Win32/Filecoder.NOH distribution networks.

In numerous corners of the globe, Win32/Filecoder.NOH grows by leaps and bounds. However, the ransom money notes and techniques of obtaining the ransom money quantity might vary depending on particular regional (regional) setups. The ransom money notes and techniques of extorting the ransom money quantity may vary depending on specific neighborhood (local) settings.

Ransomware injection

For instance:

    Faulty signals concerning unlicensed software application.

    In specific locations, the Trojans usually wrongfully report having actually detected some unlicensed applications allowed on the sufferer’s gadget. The sharp after that requires the individual to pay the ransom.

    Faulty declarations regarding prohibited material.

    In countries where software piracy is much less popular, this method is not as effective for the cyber fraudulences. Conversely, the Win32/Filecoder.NOH popup alert may wrongly declare to be deriving from a law enforcement institution as well as will report having situated youngster porn or various other prohibited information on the gadget.

    Win32/Filecoder.NOH popup alert may wrongly claim to be obtaining from a law enforcement institution and also will certainly report having located youngster pornography or various other illegal information on the gadget. The alert will likewise have a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 727FA1A9
md5: c26a67c47031736f572d35d66a39e075
name: C26A67C47031736F572D35D66A39E075.mlw
sha1: d0aea496c87422c1fd5c21dbf84d8d63369e7af3
sha256: 70408d716190d24207fc207cc684737e38de5d877863e554c6e9a8c7206a9e39
sha512: 61fe2590fb7a683f15ec4c3b9578a719723f58f49e5db4698443e8aaffa86b791576b5eed1889850e52db93001b2948202d8f32945c05aa76a2e9f9cf6fd8b35
ssdeep: 24576:nD2xPw681k1J5Hw/fk55/3H7ioniQiPsyEG3:n36yqw/mv+oV
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Filecoder.NOH also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 005246d51 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.14990
CynetMalicious (score: 100)
CAT-QuickHealTrojan.Diztakun.16490
ALYacGen:Variant.Ransom.Xiaoba.1
CylanceUnsafe
ZillyaTrojan.Filecoder.Win32.15383
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaRansom:Win32/XiaoBa.7e73b54a
K7GWTrojan ( 00013a151 )
Cybereasonmalicious.470317
CyrenW32/Trojan.CLL.gen!Eldorado
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/Filecoder.NOH
APEXMalicious
AvastWin32:Malware-gen
KasperskyVHO:Trojan-Ransom.Win32.Convagent.gen
BitDefenderGen:Variant.Ransom.Xiaoba.1
NANO-AntivirusTrojan.Win32.Encoder.fjinng
MicroWorld-eScanGen:Variant.Ransom.Xiaoba.1
TencentWin32.Trojan.Raas.Auto
Ad-AwareGen:Variant.Ransom.Xiaoba.1
SophosMal/Generic-S
ComodoWorm.Win32.Dropper.RA@1qraug
BitDefenderThetaGen:NN.ZexaF.34678.brW@a09eL3bb
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_XIAOBA.SMALY-3
McAfee-GW-EditionBehavesLike.Win32.Dropper.th
FireEyeGeneric.mg.c26a67c47031736f
EmsisoftGen:Variant.Ransom.Xiaoba.1 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan.Generic.bobck
AviraTR/AD.RansomHeur.rulsh
eGambitUnsafe.AI_Score_99%
MicrosoftRansom:Win32/XiaoBa.A!MTB
ArcabitTrojan.Ransom.Xiaoba.1
AegisLabTrojan.Win32.Generic.lwTm
GDataGen:Variant.Ransom.Xiaoba.1
Acronissuspicious
McAfeeGenericRXAA-AA!C26A67C47031
MAXmalware (ai score=87)
VBA32Trojan.Encoder
MalwarebytesTrojan.MalPack.FlyStudio
PandaTrj/GdSda.A
TrendMicro-HouseCallRansom_XIAOBA.SMALY-3
RisingRansom.XiaoBa!8.10695 (CLOUD)
YandexTrojan.Agent!iG5o9tOUnao
IkarusTrojan.Win32.CoinMiner
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/Filecoder.NOH!tr.ransom
AVGWin32:Malware-gen
Paloaltogeneric.ml

How to remove Win32/Filecoder.NOH ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft2

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft3.

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.NOH 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.NOH you can always ask me in the comments for getting help.

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References

  1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server
  2. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  3. More information about GridinSoft products: https://gridinsoft.com/comparison

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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