Ransom:Win32/StopCrypt.MZC!MTB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Ransom:Win32/StopCrypt.MZC!MTB malware detection usually means that your PC is in big danger. This virus can correctly be named as ransomware – type of malware which ciphers your files and asks you to pay for their decryption. Stopping it requires some peculiar steps that must be taken as soon as possible.
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Ransom:Win32/StopCrypt.MZC!MTB detection is a malware detection you can spectate in your computer. It generally appears after the provoking actions on your computer – opening the suspicious e-mail, clicking the advertisement in the Internet or setting up the program from untrustworthy resources. From the moment it appears, you have a short time to take action until it begins its destructive activity. And be sure – it is much better not to wait for these destructive effects.

What is Ransom:Win32/StopCrypt.MZC!MTB virus?

Ransom:Win32/StopCrypt.MZC!MTB is ransomware-type malware. It searches for the documents on your computer, ciphers it, and then asks you to pay the ransom for getting the decryption key. Besides making your documents locked, this virus additionally does a ton of harm to your system. It modifies the networking setups in order to stop you from reading the removal articles or downloading the antivirus. Sometimes, Ransom:Win32/StopCrypt.MZC!MTB can additionally stop the setup of anti-malware programs.

Ransom:Win32/StopCrypt.MZC!MTB Summary

In total, Ransom:Win32/StopCrypt.MZC!MTB malware actions in the infected PC are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Behavioural detection: Executable code extraction – unpacking;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • Dynamic (imported) function loading detected;
  • Performs HTTP requests potentially not found in PCAP.;
  • HTTPS urls from behavior.;
  • A process created a hidden window;
  • CAPE extracted potentially suspicious content;
  • Unconventionial language used in binary resources: Manipuri;
  • The binary contains an unknown PE section name indicative of packing;
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Behavioural detection: Injection (Process Hollowing);
  • Executed a process and injected code into it, probably while unpacking;
  • Behavioural detection: Injection (inter-process);
  • Created a process from a suspicious location;
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Attempts to modify proxy settings;
  • Encrypting the files located on the target’s disk drive — so the victim cannot check these documents;
  • Blocking the launching of .exe files of anti-virus programs
  • Blocking the launching of installation files of anti-malware programs

Ransomware has actually been a nightmare for the last 4 years. It is difficult to imagine a more harmful virus for both individual users and companies. The algorithms used in Ransom:Win32/StopCrypt.MZC!MTB (generally, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need to have a lot more time than our galaxy actually exists, and possibly will exist. But that virus does not do all these terrible things immediately – it can take up to a few hours to cipher all of your documents. Therefore, seeing the Ransom:Win32/StopCrypt.MZC!MTB detection is a clear signal that you should begin the removal procedure.

Where did I get the Ransom:Win32/StopCrypt.MZC!MTB?

Standard ways of Ransom:Win32/StopCrypt.MZC!MTB spreading are typical for all other ransomware variants. Those are one-day landing web pages where users are offered to download and install the free program, so-called bait e-mails and hacktools. Bait e-mails are a quite new tactic in malware spreading – you receive the email that simulates some routine notifications about shipments or bank service conditions modifications. Inside of the e-mail, there is a malicious MS Office file, or a link which opens the exploit landing site.

Malicious email spam

Malicious email message. This one tricks you to open the phishing website.

Preventing it looks fairly simple, however, still demands tons of attention. Malware can hide in different places, and it is much better to prevent it even before it invades your computer than to depend on an anti-malware program. Essential cybersecurity knowledge is just an important thing in the modern world, even if your relationship with a computer remains on YouTube videos. That may save you a great deal of money and time which you would spend while seeking a solution.

Ransom:Win32/StopCrypt.MZC!MTB malware technical details

File Info:

name: 6126C03A2F283EEBB24C.mlw
path: /opt/CAPEv2/storage/binaries/4da789d0992102f81d10ef1fe35c78890357f1f1324a9e7284c339c015ca6fca
crc32: 82D64898
md5: 6126c03a2f283eebb24cbdfb805d4301
sha1: 5d5f2400f4a35b8d72f0ae5d4f52670ae863516a
sha256: 4da789d0992102f81d10ef1fe35c78890357f1f1324a9e7284c339c015ca6fca
sha512: 36a51903bce6271f8b13484ba1bee6e19ee6bb92cf05d677185c924e9cef85b8426d9268ce33ce8070a669dd536ecdd720d1fdcd5e1c08f28dbd2e656192d0ae
ssdeep: 12288:aa5j+rfUDBfS7wDSHlEXJDUs+5e4jCohjVp2u87kB:aC+rk3hDzAeEbl2uvB
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T11EE401F075B28572D152353058269FA46EBFBD25CA21458B367A138EAFF31C4062AF1F
sha3_384: 1344330492da453ef6011be3442e4cdd34e8605b7c2c3ef2fb3d29d4f364924b778d41dd3785934b5619aa1bf6b1ad16
ep_bytes: e8c93b0000e979feffff8bff558bec8b
timestamp: 2021-03-04 01:25:52

Version Info:

InternationalName: bomgvioci.iwa
Copyright: Copyrighz (C) 2021, fudkort
ProjectVersion: 3.14.72.77
Translation: 0x0129 0x07bc

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

BkavW32.AIDetect.malware1
LionicTrojan.Win32.Injuke.4!c
Elasticmalicious (high confidence)
MicroWorld-eScanGen:Variant.Jaik.49991
FireEyeGeneric.mg.6126c03a2f283eeb
ALYacGen:Variant.Jaik.49991
CylanceUnsafe
SangforTrojan.Win32.Save.a
K7AntiVirusRiskware ( 0040eff71 )
AlibabaRansom:Win32/StopCrypt.6200b7bb
K7GWRiskware ( 0040eff71 )
Cybereasonmalicious.0f4a35
ArcabitTrojan.Jaik.DC347
CyrenW32/Kryptik.FWV.gen!Eldorado
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/Kryptik.HNVH
APEXMalicious
Paloaltogeneric.ml
ClamAVWin.Dropper.Tofsee-9919472-0
KasperskyHEUR:Trojan.Win32.Agent.gen
BitDefenderGen:Variant.Jaik.49991
AvastWin32:CrypterX-gen [Trj]
Ad-AwareGen:Variant.Jaik.49991
SophosMal/Agent-AWV
DrWebTrojan.MulDrop19.20472
McAfee-GW-EditionBehavesLike.Win32.Emotet.jc
EmsisoftGen:Variant.Jaik.49991 (B)
IkarusTrojan-Ransom.StopCrypt
JiangminBackdoor.Androm.bcnw
AviraTR/AD.MalwareCrypter.wcbil
MAXmalware (ai score=87)
MicrosoftRansom:Win32/StopCrypt.MZC!MTB
GDataGen:Variant.Jaik.49991
CynetMalicious (score: 100)
AhnLab-V3Malware/Win.Generic.R374424
Acronissuspicious
McAfeeLockbit-FSWW!6126C03A2F28
VBA32BScope.Trojan.Agent
MalwarebytesTrojan.MalPack.GS
TrendMicro-HouseCallTROJ_GEN.R002H0CLT21
RisingTrojan.Generic@ML.87 (RDML:p6zoh7uvIqS5hJFXSm7LfQ)
SentinelOneStatic AI – Malicious PE
eGambitUnsafe.AI_Score_76%
FortinetW32/GenKryptik.ERHN!tr
AVGWin32:CrypterX-gen [Trj]
PandaTrj/GdSda.A
CrowdStrikewin/malicious_confidence_90% (W)
MaxSecureTrojan.Malware.300983.susgen

How to remove Ransom:Win32/StopCrypt.MZC!MTB?

Ransom:Win32/StopCrypt.MZC!MTB malware is extremely difficult to delete manually. It stores its documents in multiple locations throughout the disk, and can get back itself from one of the parts. In addition, a lot of alterations in the windows registry, networking settings and Group Policies are pretty hard to find and revert to the original. It is far better to use a special program – exactly, an anti-malware tool. GridinSoft Anti-Malware will fit the best for malware removal reasons.

Why GridinSoft Anti-Malware? It is pretty lightweight and has its databases updated practically every hour. In addition, it does not have such bugs and weakness as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware suitable for taking out malware of any form.

Remove the viruses with GridinSoft Anti-Malware

  • Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.
  • Gridinsoft Anti-Malware during the scan process

  • Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.
  • GridinSoft Anti-Malware scan results

  • When the scan is over, you may choose the action for each detected virus. For all files of [SHORT_NAME] the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
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About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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