What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Ransom:Win32/StopCrypt.PBG!MTB detection usually means that your computer is in big danger. This computer virus can correctly be named as ransomware – sort of malware which encrypts your files and forces you to pay for their decryption. Deleteing it requires some unusual steps that must be taken as soon as possible.
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Ransom:Win32/StopCrypt.PBG!MTB detection is a virus detection you can spectate in your system. It often appears after the preliminary procedures on your computer – opening the suspicious email, clicking the banner in the Internet or mounting the program from dubious sources. From the instance it shows up, you have a short time to act until it starts its malicious activity. And be sure – it is better not to await these destructive actions.

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

Ransom:Win32/StopCrypt.PBG!MTB is ransomware-type malware. It looks for the files on your disk, encrypts it, and after that asks you to pay the ransom for getting the decryption key. Besides making your files inaccessible, this malware also does a ton of harm to your system. It changes the networking setups in order to stop you from reading the removal guidelines or downloading the antivirus. In rare cases, Ransom:Win32/StopCrypt.PBG!MTB can even stop the launching of anti-malware programs.

Ransom:Win32/StopCrypt.PBG!MTB Summary

Summarizingly, Ransom:Win32/StopCrypt.PBG!MTB malware actions in the infected system 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;
  • Checks adapter addresses which can be used to detect virtual network interfaces;
  • 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: Korean;
  • 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 copy of itself;
  • 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;
  • Encrypting the files kept on the victim’s disk — so the victim cannot use these files;
  • Blocking the launching of .exe files of anti-virus programs
  • Blocking the launching of installation files of anti-virus programs

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

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

Ordinary tactics of Ransom:Win32/StopCrypt.PBG!MTB injection are typical for all other ransomware examples. Those are one-day landing websites where users are offered to download the free software, so-called bait emails and hacktools. Bait emails are a quite modern strategy in malware distribution – you get the email that mimics some standard notifications about deliveries or bank service conditions shifts. Within the email, there is a malicious MS Office file, or a link which leads to 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 various spots, and it is better to prevent it even before it gets into your system than to rely upon an anti-malware program. General cybersecurity knowledge is just an essential thing in the modern-day world, even if your relationship with a computer stays on YouTube videos. That may keep you a great deal of time and money which you would spend while searching for a fixing guide.

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

File Info:

name: 63DFBC87496C21D3C9A0.mlw
path: /opt/CAPEv2/storage/binaries/85561249bcc274ae86903b2e100eae3b90305b258bc43ebef57789a2b2994bc0
crc32: 6BCC3807
md5: 63dfbc87496c21d3c9a0f556b1fcc655
sha1: 5d10ff8e26d0a690d6c9ca579feb05ae54dd1040
sha256: 85561249bcc274ae86903b2e100eae3b90305b258bc43ebef57789a2b2994bc0
sha512: 4c10fe6c8bf8c3b34dbb5f7d4c7437d24d6600223c8d0ec868de87228995d4244b5fd45251e5c9abbe7c07a06b9cc4e8d4f89a3b5198bc9e807e2553eb1c4fcc
ssdeep: 12288:UupOeIEPjmhLBptFDHTBSdgH+Vb3HH8tURBT1VBWNZHj/ttKIX+eCBPfu:LM+P4HHzBSY0b3HH8KSD/t6Pfu
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1DE050110AB90D435F1F316F85A7683ADF83D3AA16B3590CB12D526EE47399E1EC3121B
sha3_384: b8830a1b7178ca2cfac7b610878df94f6441da6f3559d7ea66ab3109cd5865d6b6ad85e9d579e1e00c1757056834056c
ep_bytes: 8bff558bece856b40000e8110000005d
timestamp: 2021-04-23 13:00:47

Version Info:

Translations: 0x0151 0x036f

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

CrowdStrikewin/malicious_confidence_100% (W)
Elasticmalicious (high confidence)
AvastPWSX-gen [Trj]
RisingMalware.Obscure!1.A3BB (CLASSIC)
SophosML/PE-A + Troj/Krypt-FV
CynetMalicious (score: 100)
SentinelOneStatic AI – Malicious PE
AVGPWSX-gen [Trj]

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

Ransom:Win32/StopCrypt.PBG!MTB malware is extremely hard to remove by hand. It stores its files in several places throughout the disk, and can restore itself from one of the parts. Additionally, a range of changes in the registry, networking settings and also Group Policies are pretty hard to discover and change to the initial. It is far better to use a special tool – exactly, an anti-malware program. GridinSoft Anti-Malware will definitely fit the most ideal for virus elimination purposes.

Why GridinSoft Anti-Malware? It is really lightweight and has its detection databases updated almost every hour. Additionally, it does not have such problems and exposures as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware ideal 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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