Ransom:Win32/StopCrypt.PAX!MTB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Ransom:Win32/StopCrypt.PAX!MTB detection name means that your system is in big danger. This virus can correctly be identified as ransomware – sort of malware which encrypts your files and forces you to pay for their decryption. Deleteing it requires some specific steps that must be taken as soon as possible.
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Ransom:Win32/StopCrypt.PAX!MTB detection is a malware detection you can spectate in your system. It often appears after the provoking actions on your PC – opening the suspicious email messages, clicking the banner in the Internet or mounting the program from unreliable resources. From the instance it shows up, you have a short time to do something about it until it starts its harmful activity. And be sure – it is better not to wait for these malicious things.

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

Ransom:Win32/StopCrypt.PAX!MTB is ransomware-type malware. It looks for the files on your disk drive, encrypts it, and then asks you to pay the ransom for receiving the decryption key. Besides making your files inaccessible, this malware additionally does a lot of damage to your system. It alters the networking settings in order to prevent you from reading the removal articles or downloading the antivirus. Sometimes, Ransom:Win32/StopCrypt.PAX!MTB can also block the setup of anti-malware programs.

Ransom:Win32/StopCrypt.PAX!MTB Summary

In summary, Ransom:Win32/StopCrypt.PAX!MTB malware activities 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;
  • A process attempted to delay the analysis task.;
  • Dynamic (imported) function loading detected;
  • Performs HTTP requests potentially not found in PCAP.;
  • HTTPS urls from behavior.;
  • Enumerates running processes;
  • A process created a hidden window;
  • CAPE extracted potentially suspicious content;
  • Unconventionial language used in binary resources: Marathi;
  • 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;
  • Writes a potential ransom message to disk;
  • Behavioural detection: Injection (inter-process);
  • Behavioural detection: Transacted Hollowing;
  • Created a process from a suspicious location;
  • Collects and encrypts information about the computer likely to send to C2 server;
  • Installs itself for autorun at Windows startup;
  • STOP ransomware registry artifacts detected;
  • Likely virus infection of existing system binary;
  • CAPE detected the STOP malware family;
  • Attempts to modify proxy settings;
  • Creates a known STOP-Djvu ransomware decryption instruction / key file.;
  • Creates a known STOP ransomware variant mutex;
  • STOP ransomware command line behavior detected;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files kept on the target’s drives — so the victim cannot use these documents;
  • Blocking the launching of .exe files of anti-virus programs
  • Blocking the launching of installation files of anti-virus programs

Ransomware has been a major problem for the last 4 years. It is difficult to picture a more harmful malware for both individuals and organizations. The algorithms used in Ransom:Win32/StopCrypt.PAX!MTB (typically, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need more time than our galaxy already exists, and possibly will exist. But that malware does not do all these terrible things immediately – it can take up to several hours to cipher all of your documents. Thus, seeing the Ransom:Win32/StopCrypt.PAX!MTB detection is a clear signal that you need to begin the clearing procedure.

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

Standard tactics of Ransom:Win32/StopCrypt.PAX!MTB spreading are basic for all other ransomware examples. Those are one-day landing websites where users are offered to download the free software, so-called bait e-mails and hacktools. Bait emails are a pretty new strategy in malware distribution – you receive the email that mimics some routine notifications about shippings or bank service conditions changes. Within the e-mail, there is a malicious MS Office file, or a web link which leads to the exploit landing site.

Malicious email spam

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

Avoiding it looks fairly uncomplicated, however, still demands tons of focus. Malware can hide in different places, and it is better to stop it even before it goes into your computer than to trust in an anti-malware program. Standard cybersecurity knowledge is just an essential item in the modern-day world, even if your interaction with a computer stays on YouTube videos. That can save you a great deal of time and money which you would certainly spend while trying to find a solution.

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

File Info:

name: E24D92BC223E310CFC79.mlw
path: /opt/CAPEv2/storage/binaries/def17ae9bec980437e990d3e312ef23b9742ed93ef6a45e02f0135ffc14a6719
crc32: 0C7044DE
md5: e24d92bc223e310cfc79676032042ec1
sha1: 6fa14e279731ab14cf2245d338f5920722ad0413
sha256: def17ae9bec980437e990d3e312ef23b9742ed93ef6a45e02f0135ffc14a6719
sha512: 5e5f44495e6ee1c42eec000dae27287b01eadb31b77ac4f647d061085fe0f66540504a10b8a155b286a13e3a694b2daaabc0e54a131384aed0931a98e05bbed1
ssdeep: 24576:MidlusOV7pAR5KwRhnFiTm14M2V7Z5Wu:MiXXZglTm14MO7ZEu
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1D705121172918075E2A70D321438DAA64A7BBA336B344DDF73E4037A2E75BD28E74367
sha3_384: 8961ac0524d3b45b0d6f797f95d3dc3ea0fe48b47dbafd81fcf7ba3d8d4d15d3119e97657c21ea1420ffde0700f3311d
ep_bytes: e8393d0000e989feffff8bff558bec83
timestamp: 2021-09-02 02:44:04

Version Info:

FileVersion: 8.71.86.86
Copyrighz: Copyright (C) 2022, pazkarte
ProjectVersion: 28.81.74.73

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

BkavW32.AIDetect.malware1
tehtrisGeneric.Malware
ClamAVWin.Malware.Filerepmalware-9941437-0
FireEyeGeneric.mg.e24d92bc223e310c
CylanceUnsafe
SangforTrojan.Win32.Save.a
Cybereasonmalicious.79731a
CyrenW32/Kryptik.GKN.gen!Eldorado
SymantecPacked.Generic.525
Elasticmalicious (high confidence)
ESET-NOD32a variant of Win32/Kryptik.HPKT
APEXMalicious
CynetMalicious (score: 100)
AvastPWSX-gen [Trj]
McAfee-GW-EditionBehavesLike.Win32.Generic.bc
SophosML/PE-A
SentinelOneStatic AI – Malicious PE
MicrosoftRansom:Win32/StopCrypt.PAX!MTB
Acronissuspicious
MalwarebytesTrojan.MalPack.GS
RisingTrojan.Agent!8.B1E (TFE:dGZlOgW9/EXDKenZ8Q)
IkarusTrojan.Bulta
MaxSecureTrojan.Malware.300983.susgen
AVGPWSX-gen [Trj]
CrowdStrikewin/malicious_confidence_100% (D)

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

Ransom:Win32/StopCrypt.PAX!MTB malware is extremely difficult to delete by hand. It stores its files in multiple locations throughout the disk, and can restore itself from one of the parts. Moreover, numerous modifications in the registry, networking setups and also Group Policies are really hard to find and return to the original. It is better to use a special program – exactly, an anti-malware program. GridinSoft Anti-Malware will fit the most ideal for virus removal goals.

Why GridinSoft Anti-Malware? It is very lightweight and has its detection databases updated almost every hour. Furthermore, it does not have such bugs and exploits as Microsoft Defender does. The combination of these aspects makes GridinSoft Anti-Malware perfect for eliminating 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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