Win32/Filecoder.OAN

What is Win32/Filecoder.OAN infection?

In this article you will certainly discover regarding the interpretation of Win32/Filecoder.OAN as well as its negative influence on your computer. Such ransomware are a type of malware that is elaborated by online frauds to demand paying the ransom by a victim.

Most of the situations, Win32/Filecoder.OAN infection will instruct its sufferers to initiate funds move for the purpose of reducing the effects of the amendments that the Trojan infection has introduced to the victim’s tool.

Win32/Filecoder.OAN Summary

These alterations can be as adheres to:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Presents an Authenticode digital signature;
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • A process attempted to delay the analysis task.;
  • A process created a hidden window;
  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • 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
  • Writes a potential ransom message to disk;
  • Clears Windows events or logs;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents located on the target’s disk drive — so the victim can no more make use of the data;
  • Preventing regular accessibility to the target’s workstation;

Win32/Filecoder.OAN

One of the most common networks through which Win32/Filecoder.OAN Ransomware are infused are:

  • By ways of phishing e-mails;
  • As a consequence of customer ending up on a resource that organizes a harmful software application;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the data on the sufferer’s computer or stop the gadget from functioning in a proper manner – while likewise placing a ransom note that mentions the demand for the sufferers to effect the payment for the function of decrypting the documents or bring back the data system back to the first condition. In the majority of instances, the ransom note will certainly come up when the client restarts the COMPUTER after the system has actually already been damaged.

Win32/Filecoder.OAN circulation channels.

In different edges of the globe, Win32/Filecoder.OAN grows by leaps and bounds. However, the ransom money notes and methods of obtaining the ransom money amount might differ depending on certain neighborhood (local) settings. The ransom money notes as well as tricks of extorting the ransom amount may differ depending on certain regional (regional) setups.

Ransomware injection

For instance:

    Faulty signals about unlicensed software.

    In certain areas, the Trojans commonly wrongfully report having actually spotted some unlicensed applications made it possible for on the victim’s device. The sharp after that requires the user to pay the ransom.

    Faulty declarations about prohibited material.

    In nations where software piracy is much less preferred, this technique is not as reliable for the cyber fraudulences. Additionally, the Win32/Filecoder.OAN popup alert may falsely declare to be stemming from a law enforcement institution and will certainly report having situated youngster pornography or various other illegal information on the device.

    Win32/Filecoder.OAN popup alert may falsely claim to be deriving from a legislation enforcement institution and will certainly report having located kid porn or other illegal data on the device. The alert will similarly contain a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 03CFC802md5: 5cc28691fdaa505b8f453e3500e3d690name: 5CC28691FDAA505B8F453E3500E3D690.mlwsha1: cb3fb57b5c70c3a2f30aa3af078bbb1cfdd1bf02sha256: 286bffaa9c81abfb938fe65be198770c38115cdec95865a241f913769e9bfd3fsha512: 0c4eb6a067456c91af908a4c2f77e84a80ba8d77682ba00b06a56af4062e2caf68cb7e63ef7500ae13a1bfa9a2062d838ecbc9aa418daf7faa9b0083f788d847ssdeep: 12288:A1kx1gjdatSK411nhuGvv6DuQ4yPcFy62eaFsvXPAVVRSPq2hvP:A1kfoatSK41dhuGvQgy6GWQxSvXtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9 Call Imagine Software Corporation. All rights reserved.InternalName: sh1.exeFileVersion: 8.2.14 built: 65701CompanyName: Call Imagine Software CorporationProductName: Call Imagine Software xaeCall Imagine Software xae 2013ProductVersion: 8.2.14FileDescription: Call Imagine Software Correct WearselfOriginalFilename: sh1.exeTranslation: 0x0409 0x04b0

Win32/Filecoder.OAN also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 005609a91 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.31074
Cynet Malicious (score: 99)
ALYac Trojan.Ransom.Filecoder
Cylance Unsafe
Zillya Trojan.DelShad.Win32.408
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:Win32/DelShad.f670fa4d
K7GW Trojan ( 005609a91 )
Cybereason malicious.1fdaa5
Cyren W32/Trojan.ZICY-1373
Symantec Ransom.Crysis
ESET-NOD32 Win32/Filecoder.OAN
Avast Win32:DangerousSig [Trj]
ClamAV Win.Ransomware.LockBitCombined-9375766-1
Kaspersky Trojan.Win32.DelShad.cpp
BitDefender Gen:Heur.Pack.Emotet.6
NANO-Antivirus Trojan.Win32.Encoder.hbcekr
ViRobot Trojan.Win32.Ransom.783416
MicroWorld-eScan Gen:Heur.Pack.Emotet.6
Tencent Malware.Win32.Gencirc.11699d4f
Ad-Aware Gen:Heur.Pack.Emotet.6
Sophos Mal/Generic-R + Mal/BadCert-Gen
Comodo fls.noname@0
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom.Win32.LOCKBIT.B
McAfee-GW-Edition Ransom-LkBit!5CC28691FDAA
FireEye Gen:Heur.Pack.Emotet.6
Emsisoft MalCert.A (A)
Jiangmin Trojan.DelShad.tf
Webroot W32.Ransom.Lockbit
Avira TR/AD.LockBitRansom.mlwaq
Antiy-AVL Trojan/Generic.ASMalwS.2FF3E1C
Microsoft Ransom:Win32/DelShad
AegisLab Trojan.Win32.DelShad.trxo
GData Gen:Heur.Pack.Emotet.6
TACHYON Ransom/W32.LockBit.783416
AhnLab-V3 Trojan/Win32.FileCoder.C4087131
McAfee Ransom-LkBit!5CC28691FDAA
MAX malware (ai score=100)
Malwarebytes Ransom.LockBit
Panda Trj/CI.A
TrendMicro-HouseCall Ransom.Win32.LOCKBIT.B
Rising Trojan.MalCert!1.C2A5 (CLASSIC)
Ikarus Trojan-Ransom.FileCrypter
Fortinet W32/Filecoder.OAN!tr.ransom
AVG Win32:DangerousSig [Trj]
Paloalto generic.ml

How to remove Win32/Filecoder.OAN virus?

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 GridinSoft1

Run the setup file.

Run Setup.exe
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 Scanning

Click on “Clean Now”.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

Full version of GridinSoft

If the guide doesn’t help you to remove Win32/Filecoder.OAN you can always ask me in the comments for getting help.

References

    About the author

    Robert Bailey

    Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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