Written by Robert Bailey

What is Ransom:Win32/GrandCrab.NAA!MTB infection?

In this short article you will locate regarding the definition of Ransom:Win32/GrandCrab.NAA!MTB and its unfavorable effect on your computer. Such ransomware are a form of malware that is clarified by online fraudulences to require paying the ransom money by a sufferer.

GridinSoft Anti-Malware Review

It is better to prevent, than repair and repent!

When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
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Most of the cases, Ransom:Win32/GrandCrab.NAA!MTB ransomware will certainly instruct its victims to launch funds move for the purpose of reducing the effects of the changes that the Trojan infection has actually introduced to the target’s device.

Ransom:Win32/GrandCrab.NAA!MTB Summary

These adjustments can be as complies with:

  • Creates RWX memory;
  • Installs itself for autorun at Windows startup;
  • Network activity detected but not expressed in API logs;
  • Anomalous binary characteristics;
  • Ciphering the records situated on the sufferer’s hard drive — so the sufferer can no more utilize the data;
  • Preventing normal access to the target’s workstation;


The most common networks through which Ransom:Win32/GrandCrab.NAA!MTB Ransomware are infused are:

  • By methods of phishing emails;
  • As an effect of customer ending up on a source that holds a harmful software application;

As soon as the Trojan is successfully injected, it will either cipher the data on the sufferer’s computer or prevent the tool from working in a correct manner – while also placing a ransom money note that mentions the requirement for the victims to effect the settlement for the objective of decrypting the papers or restoring the documents system back to the initial problem. In a lot of circumstances, the ransom note will certainly show up when the client reboots the COMPUTER after the system has already been damaged.

Ransom:Win32/GrandCrab.NAA!MTB distribution networks.

In various edges of the world, Ransom:Win32/GrandCrab.NAA!MTB grows by jumps and bounds. However, the ransom notes and tricks of obtaining the ransom money quantity may differ relying on specific regional (local) setups. The ransom notes as well as methods of extorting the ransom money amount may differ depending on certain regional (local) setups.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software.

    In certain locations, the Trojans typically wrongfully report having discovered some unlicensed applications allowed on the target’s gadget. The sharp after that demands the customer to pay the ransom money.

    Faulty statements about prohibited material.

    In countries where software program piracy is less preferred, this technique is not as efficient for the cyber fraudulences. Conversely, the Ransom:Win32/GrandCrab.NAA!MTB popup alert might falsely declare to be stemming from a law enforcement establishment and will report having located kid porn or various other unlawful information on the device.

    Ransom:Win32/GrandCrab.NAA!MTB popup alert might incorrectly assert to be acquiring from a law enforcement organization and will report having situated child porn or various other unlawful data on the tool. The alert will similarly include a need for the individual to pay the ransom.

Technical details

File Info:

crc32: 0328D210
md5: 105081b30042de273b94e7426910ad09
name: 105081B30042DE273B94E7426910AD09.mlw
sha1: d306f72532bda88dd1e10c253a2ca69bb107883e
sha256: d0d36a78f14667af93ddc8e0b56aee7f821fa902163147aa1e97a017c557a227
sha512: f3e665f4e14cecc198ccd55f454fe17251cfd5c66d4b98c5600125f6956974bcc0af33947ba9ddfa9b20d63fc8d72a6ec24a7d46e68231b72a5007701a79b05e
ssdeep: 1536:QD0M4fiuLiAtYIT21HEWW5ttUxL71c8AsWjcd7Z/0AftG3H:o0M0iSiACIKx1ZvN/0Aftc
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ransom:Win32/GrandCrab.NAA!MTB also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 005274f01 )
Lionic Trojan.Win32.Scar.4!c
Elastic malicious (high confidence)
DrWeb Trojan.Siggen7.48995
MicroWorld-eScan Gen:Variant.Zusy.343425
ALYac Gen:Variant.Zusy.343425
Cylance Unsafe
Zillya Trojan.Scar.Win32.108578
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_70% (D)
K7GW Trojan ( 005274f01 )
Cybereason malicious.30042d
Cyren W32/S-1e0afec1!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Filecoder.GandCrab.H
APEX Malicious
Avast FileRepMalware
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Zusy.343425
NANO-Antivirus Trojan.Win32.Scar.eyblra
Tencent Malware.Win32.Gencirc.114ce4ba
Ad-Aware Gen:Variant.Zusy.343425
Sophos Mal/Generic-S
Comodo TrojWare.Win32.Agent.ZLLS@7l61f0
BitDefenderTheta Gen:NN.ZexaF.34142.fuW@ae4CWVki
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition Ransomware-HGK!105081B30042
FireEye Generic.mg.105081b30042de27
Emsisoft Gen:Variant.Zusy.343425 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Scar.lkg
Avira HEUR/AGEN.1117010
eGambit Unsafe.AI_Score_99%
Antiy-AVL Trojan/Generic.ASMalwS.247F160
Microsoft Ransom:Win32/GrandCrab.NAA!MTB
GData Gen:Variant.Zusy.343425
AhnLab-V3 Trojan/Win32.Scar.C2416120
McAfee Ransomware-HGK!105081B30042
MAX malware (ai score=81)
VBA32 Trojan.Scar
Malwarebytes Trojan.Agent
Panda Trj/GdSda.A
Rising Trojan.Generic@ML.86 (RDML:BdtKt5oDjduEFKgSGxuzIQ)
Yandex Trojan.GenAsa!PGhJWEB1hwQ
Ikarus Trojan.Win32.Agent
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Agent.ZLL!tr
AVG FileRepMalware
Paloalto generic.ml

How to remove Ransom:Win32/GrandCrab.NAA!MTB ransomware?

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 Ransom:Win32/GrandCrab.NAA!MTB 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 Ransom:Win32/GrandCrab.NAA!MTB you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: http://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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