Written by Robert Bailey

What is Ransom:Win32/StopCrypt.MAPK!MTB infection?

In this post you will certainly locate regarding the interpretation of Ransom:Win32/StopCrypt.MAPK!MTB as well as its unfavorable effect on your computer. Such ransomware are a kind of malware that is elaborated by on-line frauds to demand paying the ransom money by a target.

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 situations, Ransom:Win32/StopCrypt.MAPK!MTB infection will instruct its sufferers to launch funds transfer for the objective of reducing the effects of the changes that the Trojan infection has actually introduced to the victim’s device.

Ransom:Win32/StopCrypt.MAPK!MTB Summary

These alterations can be as adheres to:

  • Executable code extraction;
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Creates RWX memory;
  • A process created a hidden window;
  • Unconventionial language used in binary resources: Spanish (Paraguay);
  • The binary likely contains encrypted or compressed data.;
  • Executed a process and injected code into it, probably while unpacking;
  • Detects Sandboxie through the presence of a library;
  • Detects Avast Antivirus through the presence of a library;
  • Network activity detected but not expressed in API logs;
  • Anomalous binary characteristics;
  • Ciphering the files located on the victim’s disk drive — so the target can no longer make use of the data;
  • Preventing regular accessibility to the target’s workstation;


The most common channels through which Ransom:Win32/StopCrypt.MAPK!MTB are injected are:

  • By methods of phishing emails;
  • As a repercussion of individual ending up on a source that organizes a harmful software program;

As soon as the Trojan is effectively injected, it will either cipher the information on the victim’s computer or avoid the device from operating in an appropriate manner – while additionally putting a ransom note that states the need for the targets to impact the repayment for the objective of decrypting the documents or recovering the documents system back to the initial problem. In many instances, the ransom money note will certainly show up when the client reboots the COMPUTER after the system has actually already been damaged.

Ransom:Win32/StopCrypt.MAPK!MTB distribution networks.

In different edges of the globe, Ransom:Win32/StopCrypt.MAPK!MTB expands by jumps and also bounds. Nevertheless, the ransom notes and also techniques of extorting the ransom money amount may differ depending on particular neighborhood (local) setups. The ransom notes and tricks of obtaining the ransom money amount may differ depending on particular neighborhood (regional) settings.

Ransomware injection

For example:

    Faulty informs concerning unlicensed software.

    In specific locations, the Trojans typically wrongfully report having found some unlicensed applications enabled on the sufferer’s tool. The sharp after that demands the user to pay the ransom.

    Faulty declarations concerning prohibited content.

    In nations where software application piracy is much less prominent, this approach is not as efficient for the cyber scams. Alternatively, the Ransom:Win32/StopCrypt.MAPK!MTB popup alert might wrongly claim to be stemming from a police organization and also will certainly report having located kid pornography or other unlawful information on the tool.

    Ransom:Win32/StopCrypt.MAPK!MTB popup alert might wrongly assert to be acquiring from a law enforcement institution as well as will report having located kid porn or various other prohibited information on the device. The alert will similarly include a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 3817CA55
md5: 9ac6735b9ff8392f614422af30a442a6
name: 9AC6735B9FF8392F614422AF30A442A6.mlw
sha1: adc72459ab0510814a0fd60b11891b3bbcbae44f
sha256: 9e5136a17b048da09c023635aa7fe60d5f30f1f4166c03ec472851eaa55a1645
sha512: 8d29c8ec943a552a3034d6b3ae537edef990198d77e42f8efbac4949b81fc786250fe90c87967254ad4f5b0014e06bbef8ca74f45184d0bfc860f5666e567f94
ssdeep: 3072:g0/vTIWyCFSK0hLMIq0NUQ8SLNWaolPlPOUwib84lfQRexiCts0yvS6K4vljFrsI:/R+tSQ8IWaclGU7lfM9Cts7vVKYFF
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ransom:Win32/StopCrypt.MAPK!MTB also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0058990a1 )
Elastic malicious (high confidence)
DrWeb Trojan.DownLoader43.54528
Cynet Malicious (score: 100)
ALYac Trojan.GenericKD.37881631
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
K7GW Trojan ( 0058990a1 )
Cybereason malicious.9ab051
Baidu Win32.Trojan.Kryptik.jm
Cyren W32/Kryptik.FPK.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Smokeloader.F
APEX Malicious
Avast Win32:CrypterX-gen [Trj]
ClamAV Win.Trojan.Generic-9904330-0
Kaspersky HEUR:Trojan.Win32.Chapak.gen
BitDefender Trojan.GenericKD.37881631
MicroWorld-eScan Trojan.GenericKD.37881631
Ad-Aware Trojan.GenericKD.37881631
Sophos ML/PE-A + Troj/Krypt-DY
McAfee-GW-Edition Packed-GDT!9AC6735B9FF8
FireEye Generic.mg.9ac6735b9ff8392f
Emsisoft Trojan.GenericKD.37881631 (B)
Jiangmin Trojan.Chapak.own
Avira TR/AD.MalwareCrypter.owqco
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/StopCrypt.MAPK!MTB
Arcabit Trojan.Generic.D242071F
ZoneAlarm HEUR:Trojan.Win32.Chapak.gen
GData Win32.Trojan.BSE.WS9D4D
AhnLab-V3 Ransomware/Win.Stop.R447412
Acronis suspicious
McAfee Packed-GDT!9AC6735B9FF8
MAX malware (ai score=84)
VBA32 Trojan.Chapak
Malwarebytes Trojan.MalPack.GS
Panda Trj/GdSda.A
Rising Trojan.Kryptik!1.DA4D (CLASSIC)
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Kryptik.HNCP!tr
AVG Win32:CrypterX-gen [Trj]

How to remove Ransom:Win32/StopCrypt.MAPK!MTB 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 Ransom:Win32/StopCrypt.MAPK!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/StopCrypt.MAPK!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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