What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Ransom:Win32/StopCrypt.SF!MTB malware detection usually means that your system is in big danger. This malware can correctly be identified as ransomware – virus which ciphers your files and forces you to pay for their decryption. Deleteing it requires some peculiar steps that must be done as soon as possible.
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Ransom:Win32/StopCrypt.SF!MTB detection is a virus detection you can spectate in your computer. It often shows up after the preliminary actions on your computer – opening the dubious email, clicking the advertisement in the Internet or installing the program from dubious sources. From the moment it appears, you have a short time to do something about it until it begins its harmful activity. And be sure – it is better not to wait for these harmful actions.

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

Ransom:Win32/StopCrypt.SF!MTB is ransomware-type malware. It looks for the documents on your disk, ciphers it, and then asks you to pay the ransom for getting the decryption key. Besides making your documents locked, this malware also does a lot of damage to your system. It modifies the networking setups in order to avoid you from looking for the elimination guides or downloading the antivirus. In some cases, Ransom:Win32/StopCrypt.SF!MTB can also stop the launching of anti-malware programs.

Ransom:Win32/StopCrypt.SF!MTB Summary

In summary, Ransom:Win32/StopCrypt.SF!MTB malware activities in the infected computer are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Reads data out of its own binary image;
  • CAPE extracted potentially suspicious content;
  • Unconventionial language used in binary resources: Georgian;
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Behavioural detection: Injection (Process Hollowing);
  • Behavioural detection: Injection (inter-process);
  • Behavioural detection: Injection with CreateRemoteThread in a remote process;
  • CAPE detected the Tofsee malware family;
  • Deletes executed files from disk;
  • Attempts to interact with an Alternate Data Stream (ADS);
  • Anomalous binary characteristics;
  • Uses suspicious command line tools or Windows utilities;
  • Encrypting the files kept on the target’s disk — so the victim cannot open these files;
  • Blocking the launching of .exe files of anti-malware programs
  • Blocking the launching of installation files of anti-virus apps

Ransomware has actually been a headache for the last 4 years. It is challenging to picture a more hazardous malware for both individual users and corporations. The algorithms used in Ransom:Win32/StopCrypt.SF!MTB (usually, 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 currently exists, and possibly will exist. But that virus does not do all these terrible things instantly – it can take up to a few hours to cipher all of your documents. Therefore, seeing the Ransom:Win32/StopCrypt.SF!MTB detection is a clear signal that you must begin the removal procedure.

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

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

Malicious email spam

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

Preventing it looks pretty uncomplicated, however, still demands tons of attention. Malware can hide in various places, and it is better to stop it even before it gets into your computer than to rely upon an anti-malware program. General cybersecurity awareness is just an essential thing 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 searching for a fixing guide.

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

File Info:

name: 7E7E4DC4643825C59181.mlw
path: /opt/CAPEv2/storage/binaries/394343e162cde20e8453fcdd5e3ce14ac0b6893a25fe4f7d23e6f3d10a2f925e
crc32: 53B74222
md5: 7e7e4dc4643825c59181445d03c63c27
sha1: b44bb464a1ecb92b8f9b87bdc110054c4b0d3968
sha256: 394343e162cde20e8453fcdd5e3ce14ac0b6893a25fe4f7d23e6f3d10a2f925e
sha512: 7a866bda2001b039918728727eb79946f41a85e05de4b562747c6b93880cc57faa669fa131e3aab974f95769d959b2fb7cde2b22990c6aa42de01cf4855128af
ssdeep: 3072:8jRqKNFWoqlNrDW65LawqY1rvylE6FlKzGrRu542Pv:Cq9N3tJ1rvKE6/SGrR12
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1CDB63A3386B64425D2F5F63E729E3B60CFBD98BA83E4A6F6D21004D4853265B50ED84F
sha3_384: bc2f79cde4e93fb265d388bfa139e95edd663f600489c0e0670dc659fb62972d47e65422271a0b57cfdf2531869dbe67
ep_bytes: e89a3e0000e978feffff8bff558bec83
timestamp: 2021-11-13 04:44:46

Version Info:

Copyright: Copyright (C) 2022, somoklos

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

Elasticmalicious (high confidence)
CrowdStrikewin/malicious_confidence_100% (D)
ESET-NOD32a variant of Win32/Kryptik.HQSO
AvastWin32:RansomX-gen [Ransom]
EmsisoftGen:Variant.Jaik.94839 (B)
MAXmalware (ai score=82)
CynetMalicious (score: 100)
RisingTrojan.Generic@AI.99 (RDML:ACCfmKsmEe7xBcgkld6DWw)
SentinelOneStatic AI – Malicious PE
AVGWin32:RansomX-gen [Ransom]

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

Ransom:Win32/StopCrypt.SF!MTB malware is extremely difficult to erase manually. It puts its files in a variety of locations throughout the disk, and can recover itself from one of the parts. Moreover, numerous modifications in the registry, networking configurations and also Group Policies are quite hard to identify and change to the initial. It is better to utilize a special app – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the best for malware elimination objectives.

Why GridinSoft Anti-Malware? It is very lightweight and has its detection databases updated nearly every hour. Furthermore, it does not have such problems and vulnerabilities as Microsoft Defender does. The combination of these details makes GridinSoft Anti-Malware ideal for clearing away 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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