Win32/Filecoder.Buran.J

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

What is Win32/Filecoder.Buran.J infection?

In this article you will certainly find about the definition of Win32/Filecoder.Buran.J as well as its negative impact on your computer system. Such ransomware are a type of malware that is elaborated by on the internet scams to demand paying the ransom money by a victim.

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In the majority of the instances, Win32/Filecoder.Buran.J ransomware will certainly advise its targets to start funds transfer for the function of neutralizing the changes that the Trojan infection has actually presented to the victim’s device.

Win32/Filecoder.Buran.J Summary

These modifications can be as complies with:

  • Injection with CreateRemoteThread in a remote process;
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • A process attempted to delay the analysis task.;
  • A process created a hidden window;
  • 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.
  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • Code injection with CreateRemoteThread in a remote process;
  • 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
  • Exhibits possible ransomware file modification behavior;
  • Writes a potential ransom message to disk;
  • Likely virus infection of existing system binary;
  • Clears Windows events or logs;
  • Creates a copy of itself;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the records located on the sufferer’s hard drive — so the target can no longer use the data;
  • Preventing regular access to the victim’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.Buran.J

One of the most normal networks where Win32/Filecoder.Buran.J Ransomware are injected are:

  • By methods of phishing emails;
  • As a repercussion of user ending up on a source that hosts a malicious software;

As quickly as the Trojan is effectively infused, it will certainly either cipher the data on the victim’s computer or stop the tool from working in an appropriate way – while also positioning a ransom money note that states the requirement for the sufferers to effect the settlement for the function of decrypting the files or recovering the file system back to the initial problem. In the majority of instances, the ransom money note will certainly show up when the customer restarts the COMPUTER after the system has actually currently been damaged.

Win32/Filecoder.Buran.J distribution channels.

In various edges of the globe, Win32/Filecoder.Buran.J expands by leaps as well as bounds. However, the ransom money notes as well as methods of extorting the ransom money amount might vary relying on specific local (local) settings. The ransom notes and also methods of obtaining the ransom money amount might differ depending on particular local (local) settings.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software.

    In certain areas, the Trojans typically wrongfully report having actually identified some unlicensed applications made it possible for on the sufferer’s gadget. The alert then requires the customer to pay the ransom money.

    Faulty declarations about unlawful material.

    In countries where software program piracy is much less prominent, this method is not as efficient for the cyber frauds. Additionally, the Win32/Filecoder.Buran.J popup alert might falsely claim to be originating from a police establishment and also will report having located youngster pornography or other unlawful data on the gadget.

    Win32/Filecoder.Buran.J popup alert may wrongly assert to be obtaining from a law enforcement establishment and will certainly report having located youngster pornography or other unlawful information on the device. The alert will likewise contain a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 70E0C5BF
md5: a3613f7d79ac721d068a85b3fe6cb031
name: A3613F7D79AC721D068A85B3FE6CB031.mlw
sha1: cbc406ddbdfbc4dadc7af9af1037d425bbf59a3a
sha256: a956d94412dfa630b891a7413c1afc5ad86e50617bc33ac875f4421f51fc5e9e
sha512: 86ab6d0e6d72290b5191ae1cf4fb7c26070d17b415c68360264552ad8cc1c1d7f4c2ac6e9c10799b9cc2b699d7f0f007ebaa8f9686a74c93b4e1957fb09c9883
ssdeep: 6144:7yJE1yd7WdJmcyfZkPWna4DQFu/U3buRKlemZ9DnGAevI8B5k+:7U/d7WCvmPWa4DQFu/U3buRKlemZ9Dn
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Filecoder.Buran.J also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
Elastic malicious (high confidence)
MicroWorld-eScan Generic.Ransom.Buhtrap.42D75B55
FireEye Generic.mg.a3613f7d79ac721d
Qihoo-360 HEUR/QVM05.1.D09F.Malware.Gen
ALYac Generic.Ransom.Buhtrap.42D75B55
Malwarebytes Ransom.Zeppelin
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0055c8001 )
BitDefender Generic.Ransom.Buhtrap.42D75B55
K7GW Trojan ( 0055c8001 )
Cybereason malicious.d79ac7
BitDefenderTheta AI:Packer.3765AF781F
Cyren W32/Ransom.LV.gen!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Dh-A [Heur]
Kaspersky HEUR:Trojan.Win32.Agent.gen
Rising Trojan.Filecoder!8.68 (TFE:dGZlOgU6SS2FMTnuTQ)
Ad-Aware Generic.Ransom.Buhtrap.42D75B55
Sophos ML/PE-A + Mal/Behav-010
F-Secure Heuristic.HEUR/Malware
DrWeb DLOADER.Trojan
TrendMicro Ransom.Win32.ZEPPELIN.SMTH
McAfee-GW-Edition BehavesLike.Win32.Generic.dh
Emsisoft Generic.Ransom.Buhtrap.42D75B55 (B)
SentinelOne Static AI – Malicious PE
Avira HEUR/Malware
Antiy-AVL Trojan[Ransom]/Win32.Buran.a
Arcabit Generic.Ransom.Buhtrap.42D75B55
AhnLab-V3 Trojan/Win32.BuhTrap.R338445
ZoneAlarm HEUR:Trojan.Win32.Agent.gen
GData Generic.Ransom.Buhtrap.42D75B55
Cynet Malicious (score: 100)
ESET-NOD32 a variant of Win32/Filecoder.Buran.J
VBA32 BScope.Trojan.Agent
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom.Win32.ZEPPELIN.SMTH
Yandex Trojan.GenAsa!CxfKQU+AivY
MAX malware (ai score=83)
eGambit Unsafe.AI_Score_99%
Fortinet W32/Buran.H!tr.ransom
AVG Win32:Dh-A [Heur]
CrowdStrike win/malicious_confidence_80% (D)
MaxSecure Trojan.Malware.121218.susgen

How to remove Win32/Filecoder.Buran.J ransomware?

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.Buran.J 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.Buran.J 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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