Win32/Filecoder.NAN

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

What is Win32/Filecoder.NAN infection?

In this post you will locate about the interpretation of Win32/Filecoder.NAN and also its negative influence on your computer. Such ransomware are a kind of malware that is elaborated by on-line scams to demand paying the ransom money by a target.

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In the majority of the cases, Win32/Filecoder.NAN infection will advise its victims to start funds transfer for the function of counteracting the modifications that the Trojan infection has actually presented to the sufferer’s tool.

Win32/Filecoder.NAN Summary

These adjustments can be as follows:

  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Unconventionial binary language: Russian;
  • Unconventionial language used in binary resources: Russian;
  • 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;
  • Deletes its original binary from disk;
  • 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 slightly modified copy of itself;
  • Ciphering the files found on the sufferer’s hard disk — so the sufferer can no longer use 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.NAN

One of the most typical networks through which Win32/Filecoder.NAN Ransomware Trojans are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a consequence of customer winding up on a resource that holds a harmful software application;

As soon as the Trojan is effectively injected, it will either cipher the information on the victim’s computer or protect against the device from working in a proper manner – while likewise placing a ransom note that states the demand for the sufferers to effect the payment for the function of decrypting the records or bring back the file system back to the preliminary problem. In many circumstances, the ransom money note will certainly turn up when the client restarts the PC after the system has actually currently been harmed.

Win32/Filecoder.NAN circulation channels.

In various corners of the globe, Win32/Filecoder.NAN expands by jumps and also bounds. However, the ransom notes and also techniques of extorting the ransom amount might vary depending on specific neighborhood (regional) setups. The ransom money notes and also techniques of extorting the ransom money amount might vary depending on particular regional (regional) settings.

Ransomware injection

As an example:

    Faulty signals about unlicensed software application.

    In specific areas, the Trojans often wrongfully report having actually discovered some unlicensed applications enabled on the target’s gadget. The alert then demands the customer to pay the ransom.

    Faulty declarations concerning prohibited content.

    In nations where software application piracy is much less preferred, this technique is not as effective for the cyber frauds. Additionally, the Win32/Filecoder.NAN popup alert may wrongly assert to be stemming from a police organization as well as will certainly report having located youngster pornography or various other unlawful data on the device.

    Win32/Filecoder.NAN popup alert may incorrectly claim to be deriving from a regulation enforcement organization and will certainly report having located youngster porn or various other unlawful data on the gadget. The alert will similarly contain a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: BD37B142
md5: 0d663f307f3f7188066022e1e18ebfcc
name: 0D663F307F3F7188066022E1E18EBFCC.mlw
sha1: 98490506134d8d28f4d9b96dc3cf55b535bb1e73
sha256: 7a570af865da3a1f6b47bc613a5c3ece7f73fd4e8badf26c925107ad18b9e11b
sha512: b9ce7c32be9b2c2911795a047a2b7c0f95fe7ff4cec22436fff124c8fe4555b5f53006fb7c6c18b399394bc8966d4757a363146d8e9c63cf5da7112790c88ba6
ssdeep: 3072:6uo/ry3LwjBxanYH3HdF3glFS9L4f39gCHxSG+e2UDtKOYA7NanqnKZYpGNB:zGlmnI/gl2o5aoKOYAKqnrpGNB
type: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows, UPX compressed

Version Info:

LegalCopyright:
InternalName: install
FileVersion: 8.0
CompanyName:
ProductName: EVA Universal Binary
ProductVersion: 8.0
FileDescription: EVA Universal Binary
Translation: 0x0419 0x04e3

Win32/Filecoder.NAN also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanGen:Variant.Strictor.219380
FireEyeGeneric.mg.0d663f307f3f7188
CAT-QuickHealTrojanDropper.Sysn
ALYacGen:Variant.Strictor.219380
CylanceUnsafe
VIPREWin32.Malware!Drop
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( 0043a7501 )
BitDefenderGen:Variant.Strictor.219380
K7GWTrojan ( 0043a7501 )
CrowdStrikewin/malicious_confidence_60% (D)
CyrenW32/Filecoder.AI.gen!Eldorado
SymantecML.Attribute.HighConfidence
APEXMalicious
AvastWin32:Malware-gen
KasperskyTrojan-Dropper.Win32.Sysn.cdqh
AlibabaRansom:Win32/Haperlock.c15b7fe6
NANO-AntivirusTrojan.Win32.Encoder.ejvycm
AegisLabTrojan.Win32.Sysn.4!c
RisingRansom.Haperlock!8.5355 (CLOUD)
Ad-AwareGen:Variant.Strictor.219380
EmsisoftGen:Variant.Strictor.219380 (B)
ComodoTrojWare.Win32.Ransom.Haperlock.A@8fne1o
F-SecureTrojan.TR/AD.Haperlock.pzoxo
DrWebTrojan.Encoder.217
ZillyaTrojan.Filecoder.Win32.4753
TrendMicroRansom.Win32.HAPERLOCK.SMI
McAfee-GW-EditionBehavesLike.Win32.HLLP.cc
MaxSecureTrojan.Malware.10388728.susgen
SophosMal/Generic-S + Troj/AutoG-BL
IkarusPacker.Win32.Krap
AviraTR/AD.Haperlock.pzoxo
MAXmalware (ai score=88)
Antiy-AVLTrojan/Win32.SGeneric
MicrosoftRansom:Win32/Haperlock.A
ArcabitTrojan.Strictor.D358F4
AhnLab-V3Dropper/Win32.Sysn.C1778444
ZoneAlarmTrojan-Dropper.Win32.Sysn.cdqh
GDataGen:Variant.Strictor.219380
CynetMalicious (score: 100)
ESET-NOD32Win32/Filecoder.NAN
McAfeeGenericRXAA-AA!0D663F307F3F
VBA32TrojanDropper.Sysn
MalwarebytesMalware.Heuristic.1003
PandaTrj/GdSda.A
ZonerTrojan.Win32.82590
TrendMicro-HouseCallRansom.Win32.HAPERLOCK.SMI
TencentMalware.Win32.Gencirc.10b0c251
YandexTrojan.GenAsa!yw59gW9xxcw
SentinelOneStatic AI – Malicious PE
FortinetW32/Filecoder.NAN!tr
BitDefenderThetaGen:NN.ZexaF.34608.kmLfaafC1Pnk
AVGWin32:Malware-gen
Cybereasonmalicious.07f3f7
Paloaltogeneric.ml
Qihoo-360Win32/Trojan.0eb

How to remove Win32/Filecoder.NAN 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.

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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.NAN 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?

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If the guide doesn’t help you to remove Win32/Filecoder.NAN 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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