Written by Robert Bailey

What is Win32/MBRlock.BF infection?

In this article you will discover regarding the meaning of Win32/MBRlock.BF as well as its negative impact on your computer system. Such ransomware are a form of malware that is specified by on the internet scams to require paying the ransom money by a target.

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In the majority of the cases, Win32/MBRlock.BF infection will certainly instruct its sufferers to launch funds transfer for the function of reducing the effects of the modifications that the Trojan infection has presented to the victim’s device.

Win32/MBRlock.BF 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.
  • Possible date expiration check, exits too soon after checking local time;
  • A process created a hidden window;
  • Uses Windows utilities for basic functionality;
  • Likely installs a bootkit via raw harddisk modifications;
  • Attempts to restart the guest VM;
  • 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
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files situated on the target’s hard disk — so the target can no more utilize the data;
  • Preventing routine accessibility 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.


One of the most typical channels whereby Win32/MBRlock.BF are injected are:

  • By means of phishing e-mails;
  • As a consequence of individual ending up on a source that holds a harmful software program;

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s PC or prevent the device from functioning in an appropriate way – while also putting a ransom note that discusses the need for the targets to impact the payment for the purpose of decrypting the files or recovering the documents system back to the preliminary condition. In the majority of circumstances, the ransom money note will certainly come up when the client reboots the COMPUTER after the system has actually currently been damaged.

Win32/MBRlock.BF distribution networks.

In numerous edges of the world, Win32/MBRlock.BF grows by leaps as well as bounds. However, the ransom money notes as well as methods of obtaining the ransom amount might differ depending upon certain local (local) setups. The ransom money notes and tricks of extorting the ransom quantity may vary depending on particular regional (regional) setups.

Ransomware injection

For example:

    Faulty informs concerning unlicensed software program.

    In specific areas, the Trojans commonly wrongfully report having actually spotted some unlicensed applications allowed on the target’s device. The alert after that demands the customer to pay the ransom.

    Faulty statements regarding illegal web content.

    In countries where software piracy is much less prominent, this approach is not as reliable for the cyber frauds. Alternatively, the Win32/MBRlock.BF popup alert might incorrectly assert to be deriving from a police institution as well as will report having situated kid pornography or other prohibited information on the device.

    Win32/MBRlock.BF popup alert might falsely claim to be acquiring from a law enforcement establishment and will certainly report having situated youngster pornography or various other unlawful information on the device. The alert will similarly include a need for the individual to pay the ransom.

Technical details

File Info:

crc32: B99BA0E8
md5: e6a286544172058f451ad9df54ad1292
name: E6A286544172058F451AD9DF54AD1292.mlw
sha1: caa76ae5ca56541df4776a4e0667ad3948048757
sha256: 4cd23a989a8f196b1f49e5e66c6ecfa0cebf63f04950ae4d64127aaedda9e89c
sha512: 0ba8145b94485f74062a625720c6394d5e3b8834d0a6be58108c482644e282c111f7ce73e452c24fdb04e6827bef842be199b4e61eb6ece400a7a565416522ca
ssdeep: 48:Zvt+BLdtWU2ew9FRCfH8BArSXXmzdh4vMASG2HvzqEsG8V:Z1+9dtWU2ew9rC/8Kiidh4vMASNHvzB
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/MBRlock.BF also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
DrWeb Trojan.KillMBR.24847
Cynet Malicious (score: 99)
ALYac Trojan.Diskwriter.gen
Cylance Unsafe
Zillya Trojan.MBRlock.Win32.591
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:Win32/Ashify.b6a2b55d
K7GW Riskware ( 0040eff71 )
Cybereason malicious.441720
Cyren W32/Trojan.GEQS-4314
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/MBRlock.BF
APEX Malicious
Avast Win32:TrojanX-gen [Trj]
Kaspersky UDS:Trojan.Win32.Generic
BitDefender Trojan.GenericKD.33658001
NANO-Antivirus Trojan.Win32.KillMBR.illvrg
MicroWorld-eScan Trojan.GenericKD.33658001
Tencent Win32.Trojan.Generic.Alig
Ad-Aware Trojan.GenericKD.33658001
Sophos Mal/Generic-R + Troj/KillMBR-V
BitDefenderTheta Gen:NN.ZexaF.34692.auW@ay!9nhc
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition GenericRXOG-TB!E6A286544172
Emsisoft Trojan.GenericKD.33658001 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Generic.erchp
Webroot W32.Trojan.Gen
Avira TR/Ransom.MBRlock.jwpre
eGambit Unsafe.AI_Score_99%
Antiy-AVL Trojan/Generic.ASMalwS.303AA43
Microsoft Trojan:Win32/Occamy.C4C
Arcabit Trojan.Generic.D2019491
AegisLab Trojan.Win32.Generic.4!c
GData Trojan.GenericKD.33658001
AhnLab-V3 Trojan/Win32.MBRlock.C4061673
McAfee GenericRXOG-TB!E6A286544172
MAX malware (ai score=89)
VBA32 BScope.Trojan.Occamy
Malwarebytes Trojan.MBRLock
Panda Trj/GdSda.A
Rising Trojan.Generic!8.C3 (CLOUD)
Yandex Trojan.MBRlock!xVF8fJ1CEag
Ikarus Trojan.Win32.MBRlock
MaxSecure Trojan.Malware.7164915.susgen
Fortinet W32/MBRlock.BF!tr.ransom
AVG Win32:TrojanX-gen [Trj]

How to remove Win32/MBRlock.BF 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

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/MBRlock.BF 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/MBRlock.BF you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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