Win32/Filecoder.NRB

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

What is Win32/Filecoder.NRB infection?

In this article you will find about the definition of Win32/Filecoder.NRB and its adverse impact on your computer. Such ransomware are a kind of malware that is clarified by on-line scams to require paying the ransom by a sufferer.

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Most of the cases, Win32/Filecoder.NRB infection will advise its sufferers to launch funds transfer for the purpose of reducing the effects of the amendments that the Trojan infection has introduced to the target’s tool.

Win32/Filecoder.NRB Summary

These alterations can be as complies with:

  • Executable code extraction;
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Creates RWX memory;
  • Network anomalies occured during the analysis.;
  • A process created a hidden window;
  • Drops a binary and executes it;
  • Performs some HTTP requests;
  • Unconventionial binary language: Portuguese (Brazil);
  • Unconventionial language used in binary resources: Danish;
  • The binary likely contains encrypted or compressed data.;
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • Deletes its original binary from disk;
  • Creates a registry key or value with NUL characters to avoid detection with regedit;
  • Installs itself for autorun at Windows startup;
  • Exhibits possible ransomware file modification behavior;
  • Spoofs its process name and/or associated pathname to appear as a legitimate process;
  • Creates a hidden or system file;
  • Attempts to modify proxy settings;
  • Creates a copy of itself;
  • Generates some ICMP traffic;
  • Anomalous binary characteristics;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers located on the target’s disk drive — so the victim can no longer utilize the data;
  • Preventing regular access to the target’s workstation;

Related domains:

z.whorecord.xyzTrojan.Ransom.RaRansom
a.tomx.xyzTrojan.Ransom.RaRansom
bitly.comTrojan.Ransom.RaRansom
www.parenting.com.twTrojan.Ransom.RaRansom

Win32/Filecoder.NRB

The most normal channels through which Win32/Filecoder.NRB Ransomware are infused are:

  • By means of phishing e-mails;
  • As a consequence of user ending up on a resource that hosts a harmful software program;

As soon as the Trojan is efficiently infused, it will certainly either cipher the data on the target’s PC or stop the gadget from working in an appropriate way – while also positioning a ransom money note that discusses the demand for the sufferers to effect the settlement for the function of decrypting the papers or recovering the file system back to the first condition. In the majority of instances, the ransom note will come up when the customer reboots the PC after the system has actually already been damaged.

Win32/Filecoder.NRB distribution channels.

In different edges of the world, Win32/Filecoder.NRB grows by leaps and also bounds. However, the ransom notes as well as methods of obtaining the ransom money quantity might vary depending upon specific neighborhood (regional) setups. The ransom money notes and also methods of obtaining the ransom amount might vary depending on particular neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty informs concerning unlicensed software.

    In specific areas, the Trojans usually wrongfully report having identified some unlicensed applications enabled on the sufferer’s tool. The sharp after that requires the user to pay the ransom.

    Faulty statements regarding unlawful material.

    In nations where software program piracy is less prominent, this approach is not as reliable for the cyber frauds. Conversely, the Win32/Filecoder.NRB popup alert might wrongly declare to be originating from a police organization and also will report having located youngster pornography or other prohibited information on the tool.

    Win32/Filecoder.NRB popup alert may wrongly claim to be deriving from a law enforcement establishment and will report having situated child porn or various other unlawful information on the gadget. The alert will likewise include a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: EE3FD224
md5: 550a730bfcb7d164765fd8894548d375
name: 550A730BFCB7D164765FD8894548D375.mlw
sha1: 47ec45fe98c0b207afb8b35afb84c2755f619c5d
sha256: 3fbde3f4dc46b57dc0017239f0c55cfd65855e2a506cdad250f975c41257887f
sha512: 451a46d4bb1dbf7e2b2d230ef4e6393e4e17bcbafb1ed56f1489f4c6914694eccb1f7d4211a7af7ec55ca8a022f8abf0255e7508dcf1e992e601eee57ce364d5
ssdeep: 1536:lKtZKbWuF/3HVNTnuTeDTxv5Adqrw2G9qVPKZCGLo5vXJFT:sZKSmPTnuyDTxSUw2Gk9Z9
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2018
InternalName: FiFi
FileVersion: 1.0.0.1
CompanyName: Oklahoma Tire & Supply Company
ProductName: FiFile Cleanup
ProductVersion: 1.0.0.1
Translation: 0x0416 0x04b0

Win32/Filecoder.NRB also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware2
K7AntiVirusRiskware ( 0040eff71 )
LionicTrojan.Win32.Androm.m!c
Elasticmalicious (high confidence)
DrWebTrojan.DownLoader26.55291
CynetMalicious (score: 100)
CAT-QuickHealTrojan.Mauvaise.SL1
ALYacTrojan.Ransom.RaRansom
CylanceUnsafe
ZillyaTrojan.Filecoder.Win32.7961
SangforSuspicious.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaBackdoor:Win32/Androm.6f07f73e
K7GWRiskware ( 0040eff71 )
Cybereasonmalicious.bfcb7d
SymantecML.Attribute.HighConfidence
ESET-NOD32Win32/Filecoder.NRB
APEXMalicious
AvastWin32:Malware-gen
KasperskyBackdoor.Win32.Androm.qbmd
BitDefenderGeneric.Ransom.RaRans.A294121B
NANO-AntivirusTrojan.Win32.Androm.ffacyr
MicroWorld-eScanGeneric.Ransom.RaRans.A294121B
TencentWin32.Trojan.Raas.Auto
Ad-AwareGeneric.Ransom.RaRans.A294121B
SophosMal/Generic-R + Troj/Ransom-EZF
ComodoMalware@#5vnvq2vhyist
BitDefenderThetaAI:Packer.39D958E71F
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_RARANS.A
McAfee-GW-EditionBehavesLike.Win32.Generic.kc
FireEyeGeneric.mg.550a730bfcb7d164
EmsisoftGeneric.Ransom.RaRans.A294121B (B)
SentinelOneStatic AI – Suspicious PE
JiangminBackdoor.Androm.aahe
WebrootW32.Trojan.Gen
AviraTR/Dropper.Gen
Antiy-AVLTrojan/Generic.ASMalwS.26C8024
MicrosoftTrojan:Win32/Injeber.D!rfn
GDataWin32.Trojan-Ransom.Filecoder.D3GSVN
AhnLab-V3Trojan/Win32.FileCoder.C2645925
McAfeeRDN/Ransom
MAXmalware (ai score=97)
VBA32Backdoor.Androm
MalwarebytesBackdoor.Andromeda
PandaTrj/GdSda.A
TrendMicro-HouseCallRansom_RARANS.A
YandexBackdoor.Androm!aU28X5t4yzY
IkarusTrojan-Ransom.Generic
FortinetW32/Androm.QBMD!tr.bdr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Backdoor.Androm.HgIASOcA

How to remove Win32/Filecoder.NRB 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.NRB 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.NRB 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/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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