Written by Robert Bailey

What is Win32/MBRlock.C infection?

In this short article you will certainly discover about the meaning of Win32/MBRlock.C and also its negative impact on your computer system. Such ransomware are a type of malware that is specified by on-line frauds to require paying the ransom money by a target.

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In the majority of the instances, Win32/MBRlock.C virus will advise its sufferers to launch funds move for the function of reducing the effects of the amendments that the Trojan infection has actually introduced to the victim’s tool.

Win32/MBRlock.C Summary

These alterations can be as complies with:

  • 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.
  • 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;
  • 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.
  • Likely installs a bootkit via raw harddisk modifications;
  • Deletes its original binary from disk;
  • Attempts to restart the guest VM;
  • 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 records situated on the victim’s disk drive — so the target can no more make use of the data;
  • Preventing routine accessibility to the sufferer’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 normal channels through which Win32/MBRlock.C Ransomware Trojans are infused are:

  • By ways of phishing e-mails;
  • As an effect of customer winding up on a resource that hosts a malicious software program;

As quickly as the Trojan is effectively infused, it will either cipher the information on the victim’s PC or protect against the gadget from functioning in an appropriate way – while likewise positioning a ransom money note that points out the demand for the victims to impact the repayment for the purpose of decrypting the documents or recovering the data system back to the preliminary condition. In a lot of circumstances, the ransom money note will certainly turn up when the client reboots the PC after the system has already been harmed.

Win32/MBRlock.C distribution networks.

In numerous edges of the world, Win32/MBRlock.C grows by jumps and bounds. Nevertheless, the ransom notes and also methods of obtaining the ransom amount might differ depending on particular neighborhood (local) setups. The ransom notes and also methods of obtaining the ransom quantity might vary depending on specific regional (local) settings.

Ransomware injection

For instance:

    Faulty notifies about unlicensed software.

    In certain locations, the Trojans often wrongfully report having found some unlicensed applications enabled on the victim’s tool. The sharp then requires the individual to pay the ransom.

    Faulty declarations about illegal web content.

    In nations where software application piracy is less preferred, this technique is not as effective for the cyber frauds. Conversely, the Win32/MBRlock.C popup alert may falsely claim to be stemming from a law enforcement organization as well as will report having located kid pornography or other illegal data on the gadget.

    Win32/MBRlock.C popup alert might wrongly declare to be acquiring from a regulation enforcement institution as well as will certainly report having located youngster porn or other prohibited data on the tool. The alert will likewise include a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 22081330
md5: b471cabef47cd1b18516507cdfc83592
name: B471CABEF47CD1B18516507CDFC83592.mlw
sha1: 5045155d68a99bc2019e868ee237044fad91a1be
sha256: a37d6317ff349a8dbff59ba31d8899ae6e3e0f044ca933b58ee34a2805b582df
sha512: cb826f255f0f2969c0f8ba5f7750ad2727c3a450a76f866b1b589554c12ca006ac1be928bfc96b0ec5ffb4836bebd703c1d54db0d2afb192ecb6abfbc425f546
ssdeep: 768:xGwkG+QhJDgdHAb1Y69G6Z+biMcgI/UO2pnGwaR:xGwjhGs1r9Gm+TcPN2pGwaR
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 Timid Nice 1999-2010
InternalName: Cue
CompanyName: Forge Miner
ProductName: Webb
FileDescription: Reset Ethyl Glass
OriginalFilename: Trays.exe
Translation: 0x0409 0x04b0

Win32/MBRlock.C also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 0027e22c1 )
Elastic malicious (high confidence)
DrWeb Trojan.MBRlock.6
Cynet Malicious (score: 100)
ALYac Gen:Variant.Kazy.3995
Cylance Unsafe
Zillya Trojan.MBRlock.Win32.29
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_80% (D)
Alibaba Ransom:Win32/Genasom.2adcda55
K7GW Trojan ( 0027e22c1 )
Cybereason malicious.ef47cd
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/MBRlock.C
APEX Malicious
Avast Win32:MalOb-IJ [Cryp]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Kazy.3995
NANO-Antivirus Trojan.Win32.MBRlock.ebzzfm
MicroWorld-eScan Gen:Variant.Kazy.3995
Tencent Win32.Trojan.Mbrmodifier.Auto
Ad-Aware Gen:Variant.Kazy.3995
Sophos Mal/Generic-S
Comodo Malware@#10fccnli93m8c
BitDefenderTheta AI:Packer.D2566D9B21
VIPRE Trojan.Win32.Generic.pak!cobra
McAfee-GW-Edition Artemis!Trojan
Emsisoft Gen:Variant.Kazy.3995 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/MBro.r
Avira TR/Genix.SS
eGambit Generic.Malware
Antiy-AVL Trojan/Generic.ASMalwS.24F27D
Microsoft Trojan:Win32/Skeeyah.A!rfn
Arcabit Trojan.Kazy.DF9B
AegisLab Trojan.Win32.Generic.4!c
GData Gen:Variant.Kazy.3995
Acronis suspicious
McAfee Artemis!B471CABEF47C
MAX malware (ai score=100)
VBA32 Trojan-Dropper.5705
Panda Trj/CI.A
Rising Ransom.Genasom!8.293 (C64:YzY0Op/opfcFrXFQ)
Ikarus Trojan-Ransom.Mbro
Fortinet W32/Yakes.B!tr
AVG Win32:MalOb-IJ [Cryp]

How to remove Win32/MBRlock.C 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.C 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/MBRlock.C 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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