Win32/Filecoder.Lockbit.B

What is Win32/Filecoder.Lockbit.B infection?

In this article you will discover regarding the meaning of Win32/Filecoder.Lockbit.B and its unfavorable effect on your computer. Such ransomware are a type of malware that is specified by on the internet fraudulences to require paying the ransom money by a victim.

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In the majority of the cases, Win32/Filecoder.Lockbit.B ransomware 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 sufferer’s tool.

Win32/Filecoder.Lockbit.B Summary

These modifications can be as adheres to:

  • 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 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
  • Exhibits possible ransomware file modification behavior;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files found on the target’s disk drive — so the target can no longer make use of the information;
  • 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.Lockbit.B

One of the most common channels where Win32/Filecoder.Lockbit.B Ransomware Trojans are infused are:

  • By ways of phishing emails;
  • As an effect of user ending up on a resource that hosts a destructive software program;

As quickly as the Trojan is efficiently injected, it will either cipher the data on the victim’s computer or avoid the device from working in an appropriate manner – while likewise putting a ransom money note that mentions the demand for the victims to effect the payment for the function of decrypting the documents or recovering the documents system back to the initial problem. In a lot of instances, the ransom note will certainly turn up when the client restarts the PC after the system has already been harmed.

Win32/Filecoder.Lockbit.B distribution channels.

In numerous corners of the globe, Win32/Filecoder.Lockbit.B grows by leaps and bounds. However, the ransom notes and also methods of obtaining the ransom money quantity may vary depending on specific neighborhood (regional) setups. The ransom money notes and techniques of extorting the ransom amount might differ depending on certain neighborhood (regional) settings.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software program.

    In specific locations, the Trojans commonly wrongfully report having identified some unlicensed applications allowed on the victim’s tool. The alert then requires the individual to pay the ransom money.

    Faulty declarations regarding unlawful content.

    In nations where software piracy is much less prominent, this technique is not as efficient for the cyber scams. Conversely, the Win32/Filecoder.Lockbit.B popup alert may falsely claim to be originating from a police organization and also will certainly report having located youngster porn or various other illegal data on the tool.

    Win32/Filecoder.Lockbit.B popup alert may incorrectly declare to be deriving from a legislation enforcement establishment and also will report having situated child porn or other prohibited information on the device. The alert will in a similar way have a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: 7BF13F42
md5: 9a4df42101a680237241797dc57bd304
name: 9A4DF42101A680237241797DC57BD304.mlw
sha1: db0bc0c41f5aae7e102176eba7f0386f5701a0a3
sha256: 4d0113884f70ddbbaf1ee0365602124ba91c11a76ff7bff5908d310aa9d3dfe9
sha512: 836ffdb37bf3b0a639bf406422b46f1b3aeaddfe1b1680dc83c794a6e3e299b1c3030a82aac561740cf8ddeff3d2e554d96a0898da453e92da16dc6ef76d653e
ssdeep: 1536:juBQenvT2/XXMvFbedQHnoVNUmKV9j3MqqU+hV2FeabjZc:juBHkX8dqOnK+mK33MqqD/ad
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Filecoder.Lockbit.B also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Heur.Ransom.REntS.Gen.1
FireEye Generic.mg.9a4df42101a68023
McAfee GenericRXIS-VO!9A4DF42101A6
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Win32.Generic.4!c
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0056a69e1 )
BitDefender Gen:Heur.Ransom.REntS.Gen.1
K7GW Trojan ( 0056a69e1 )
CrowdStrike win/malicious_confidence_70% (D)
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Ransomware.LockBitCombined-9375766-1
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Trojan:Win32/Tiggre.eed7c166
NANO-Antivirus Trojan.Win32.Filecoder.gdmacf
Rising Trojan.Filecoder!8.68 (CLOUD)
Ad-Aware Gen:Heur.Ransom.REntS.Gen.1
Emsisoft Gen:Heur.Ransom.REntS.Gen.1 (B)
F-Secure Trojan.TR/Crypt.XPACK.Gen
DrWeb Trojan.Encoder.29662
TrendMicro Ransom.Win32.SANSPITIE.SMTH
McAfee-GW-Edition BehavesLike.Win32.Generic.lh
Sophos Mal/Generic-S
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Generic.eesyi
eGambit Unsafe.AI_Score_98%
Avira TR/Crypt.XPACK.Gen
MAX malware (ai score=88)
Antiy-AVL Trojan/Win32.Fuery
Microsoft Trojan:Win32/Tiggre!plock
Arcabit Trojan.Ransom.REntS.Gen.1
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Heur.Ransom.REntS.Gen.1
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Generic.C3513194
Acronis suspicious
BitDefenderTheta AI:Packer.C3E6D0431E
ALYac Trojan.Ransom.Filecoder
VBA32 BScope.Trojan.DelShad
Malwarebytes MachineLearning/Anomalous.94%
Panda Trj/GdSda.A
ESET-NOD32 a variant of Win32/Filecoder.Lockbit.B
TrendMicro-HouseCall Ransom.Win32.SANSPITIE.SMTH
Tencent Win32.Trojan.Raas.Auto
Ikarus Trojan-Ransom.FileCrypter
Fortinet W32/Filecoder.NXQ!tr.ransom
Webroot W32.Trojan.Gen
AVG Win32:Trojan-gen
Cybereason malicious.101a68
Paloalto generic.ml
Qihoo-360 Generic/Trojan.Ransom.ec8

How to remove Win32/Filecoder.Lockbit.B 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.

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Once installed, Anti-Malware will automatically run.

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Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Win32/Filecoder.Lockbit.B 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.Lockbit.B 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/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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