Written by Robert Bailey

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

In this post you will find regarding the definition of Ransom:Win32/StopCrypt.AK!MTB and its adverse impact on your computer system. Such ransomware are a kind of malware that is elaborated by on-line fraudulences to demand paying the ransom by a target.

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In the majority of the instances, Ransom:Win32/StopCrypt.AK!MTB virus will instruct its sufferers to launch funds move for the function of counteracting the amendments that the Trojan infection has introduced to the victim’s gadget.

Ransom:Win32/StopCrypt.AK!MTB Summary

These adjustments can be as adheres to:

  • Executable code extraction;
  • Creates RWX memory;
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Performs some HTTP requests;
  • Unconventionial language used in binary resources: Farsi;
  • The binary likely contains encrypted or compressed data.;
  • Attempts to repeatedly call a single API many times in order to delay analysis time;
  • Steals private information from local Internet browsers;
  • Collects information about installed applications;
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Attempts to modify proxy settings;
  • Harvests credentials from local FTP client softwares;
  • Harvests information related to installed instant messenger clients;
  • Harvests information related to installed mail clients;
  • Collects information to fingerprint the system;
  • Anomalous binary characteristics;
  • Ciphering the files located on the victim’s disk drive — so the sufferer can no longer make use of the data;
  • Preventing normal access to the victim’s workstation;

Related domains:

investmentrealty.co.ug Ransom:Win32/StopCrypt.6e81788d
ip-api.com Ransom:Win32/StopCrypt.6e81788d


One of the most normal channels through which Ransom:Win32/StopCrypt.AK!MTB Trojans are injected are:

  • By ways of phishing emails;
  • As an effect of individual winding up on a source that organizes a harmful software application;

As quickly as the Trojan is successfully infused, it will certainly either cipher the information on the victim’s computer or prevent the gadget from working in a proper manner – while also putting a ransom note that mentions the requirement for the targets to effect the repayment for the purpose of decrypting the files or bring back the data system back to the initial problem. In the majority of circumstances, the ransom money note will turn up when the customer reboots the PC after the system has actually already been harmed.

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

In different edges of the world, Ransom:Win32/StopCrypt.AK!MTB grows by jumps and bounds. However, the ransom money notes as well as techniques of extorting the ransom money quantity may differ relying on particular regional (regional) setups. The ransom notes and also techniques of extorting the ransom money amount might differ depending on specific neighborhood (local) settings.

Ransomware injection

For instance:

    Faulty alerts concerning unlicensed software program.

    In specific locations, the Trojans often wrongfully report having found some unlicensed applications made it possible for on the victim’s gadget. The sharp after that requires the user to pay the ransom money.

    Faulty declarations about unlawful content.

    In nations where software piracy is much less prominent, this method is not as effective for the cyber scams. Conversely, the Ransom:Win32/StopCrypt.AK!MTB popup alert might falsely declare to be originating from a police institution and will report having located child porn or various other prohibited information on the gadget.

    Ransom:Win32/StopCrypt.AK!MTB popup alert may falsely assert to be obtaining from a regulation enforcement institution and also will certainly report having located kid pornography or various other prohibited data on the device. The alert will in a similar way consist of a demand for the customer to pay the ransom money.

Technical details

File Info:

crc32: B3CEEC35
md5: 6463fa6a18bf569a30dff9ace0633fb9
name: 5.exe
sha1: ffb452cc29d46b7d322060ddcca61489962bc690
sha256: a81a69c32131853b76a59afe749cb4963229845ce084939da1be3b80af38746a
sha512: 56484a366e35b0bb8557cf73a737a0386cc8673f6f518a2f233045164a2e3c33bbb533b5850c15ed4a3c79863fca3461c0f6e8f2390b7bc758147262461ddbe8
ssdeep: 12288:Yy05oRmxVWeBQNXU37IJt6SazQyxXNb5b9IbIXus:kxxqkLIqSaMQdFb+sX
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translations: 0x0118 0x07a1

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

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKD.43929738
FireEye Generic.mg.6463fa6a18bf569a
CAT-QuickHeal Trojan.Multi
McAfee Trojan-FSUC!6463FA6A18BF
Cylance Unsafe
Zillya Trojan.Kryptik.Win32.2566004
Sangfor Malware
K7AntiVirus Trojan ( 005700a21 )
BitDefender Trojan.GenericKD.43929738
K7GW Trojan ( 0056f9be1 )
TrendMicro Trojan.Win32.WACATAC.THICOBO
Cyren W32/Kryptik.CAF.gen!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:DropperX-gen [Drp]
ClamAV Win.Trojan.Tofsee-9770082-1
Kaspersky HEUR:Trojan.Win32.Chapak.gen
Alibaba Ransom:Win32/StopCrypt.6e81788d
NANO-Antivirus Trojan.Win32.Chapak.hxpnhf
ViRobot Trojan.Win32.Z.Kryptik.427520.O
AegisLab Trojan.Multi.Generic.4!c
Ad-Aware Trojan.GenericKD.43929738
Sophos Mal/Generic-S
F-Secure Trojan.TR/AD.VidarStealer.fjimx
DrWeb Trojan.Siggen10.32818
VIPRE Trojan.Win32.Generic!BT
Invincea Mal/Generic-S
McAfee-GW-Edition BehavesLike.Win32.Emotet.gc
Emsisoft Trojan.GenericKD.43929738 (B)
Ikarus Trojan.Win32.Crypt
MaxSecure Trojan.Malware.73643692.susgen
Avira TR/AD.VidarStealer.fjimx
Microsoft Ransom:Win32/StopCrypt.AK!MTB
Arcabit Trojan.Generic.D29E508A
ZoneAlarm HEUR:Trojan.Win32.Chapak.gen
GData Trojan.GenericKD.43929738
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.MalPe.R352515
BitDefenderTheta Gen:NN.ZexaF.34298.AqW@a8MKrbdG
ALYac Trojan.GenericKD.43929738
MAX malware (ai score=100)
VBA32 Trojan.Chapak
Malwarebytes Trojan.MalPack.GS
Panda Trj/GdSda.A
ESET-NOD32 a variant of Win32/Kryptik.HGLF
TrendMicro-HouseCall Trojan.Win32.WACATAC.THICOBO
Rising Ransom.StopCrypt!8.11C05 (TFE:5:xfgOqVjWH2N)
Yandex Trojan.Kryptik!MHBUlzcZ+Xo
SentinelOne DFI – Malicious PE
Fortinet W32/Kryptik.HGNJ!tr
Webroot W32.InfoStealer.Zeus
AVG Win32:DropperX-gen [Drp]
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Trojan.a7e

How to remove Ransom:Win32/StopCrypt.AK!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.AK!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.AK!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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