Ransom:Win32/StopCrypt.PBL!MTB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Ransom:Win32/StopCrypt.PBL!MTB malware detection means that your PC is in big danger. This malware can correctly be identified as ransomware – sort of malware which ciphers your files and asks you to pay for their decryption. Removing it requires some unusual steps that must be taken as soon as possible.
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Ransom:Win32/StopCrypt.PBL!MTB detection is a virus detection you can spectate in your computer. It usually appears after the preliminary actions on your PC – opening the untrustworthy e-mail messages, clicking the advertisement in the Web or setting up the program from untrustworthy sources. From the instance it shows up, you have a short time to act until it begins its malicious action. And be sure – it is better not to wait for these malicious things.

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

Ransom:Win32/StopCrypt.PBL!MTB is ransomware-type malware. It searches for the files on your disk drive, ciphers it, and then asks you to pay the ransom for receiving the decryption key. Besides making your files locked, this virus additionally does a lot of harm to your system. It changes the networking setups in order to stop you from looking for the removal tutorials or downloading the antivirus. In some cases, Ransom:Win32/StopCrypt.PBL!MTB can also stop the launching of anti-malware programs.

Ransom:Win32/StopCrypt.PBL!MTB Summary

Summarizingly, Ransom:Win32/StopCrypt.PBL!MTB virus activities in the infected computer are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • 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;
  • Creates RWX memory;
  • Dynamic (imported) function loading detected;
  • Reads data out of its own binary image;
  • A process created a hidden window;
  • CAPE extracted potentially suspicious content;
  • Unconventionial language used in binary resources: Uzbek (Latin);
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Enumerates services, possibly for anti-virtualization;
  • Behavioural detection: Injection (Process Hollowing);
  • Executed a process and injected code into it, probably while unpacking;
  • Behavioural detection: Injection (inter-process);
  • Installs itself for autorun at Windows startup;
  • Installs itself for autorun at Windows startup;
  • CAPE detected the Tofsee malware family;
  • Anomalous binary characteristics;
  • Uses suspicious command line tools or Windows utilities;
  • Encrypting the files located on the victim’s disk — so the victim cannot check these documents;
  • Blocking the launching of .exe files of security tools
  • Blocking the launching of installation files of anti-malware programs

Ransomware has actually been a headache for the last 4 years. It is challenging to imagine a more hazardous virus for both individual users and businesses. The algorithms used in Ransom:Win32/StopCrypt.PBL!MTB (usually, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need a lot more time than our galaxy currently exists, and possibly will exist. However, that virus does not do all these horrible things instantly – it may require up to a few hours to cipher all of your files. Hence, seeing the Ransom:Win32/StopCrypt.PBL!MTB detection is a clear signal that you should start the clearing procedure.

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

Typical tactics of Ransom:Win32/StopCrypt.PBL!MTB distribution are common for all other ransomware examples. Those are one-day landing web pages where users are offered to download and install the free software, so-called bait e-mails and hacktools. Bait emails are a pretty modern tactic in malware distribution – you receive the e-mail that simulates some routine notifications about shippings or bank service conditions shifts. Inside of the email, there is a corrupted MS Office file, or a web link which opens the exploit landing site.

Malicious email spam

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

Avoiding it looks pretty easy, however, still requires a lot of recognition. Malware can hide in various spots, and it is better to stop it even before it invades your PC than to trust in an anti-malware program. Standard cybersecurity awareness is just an essential item in the modern world, even if your relationship with a computer stays on YouTube videos. That may save you a lot of money and time which you would certainly spend while looking for a solution.

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

File Info:

name: 4237C928E161B58577A5.mlw
path: /opt/CAPEv2/storage/binaries/f708226fea9e3f5739b3d37413eeee2b30cc290d0c801a3be8d2e8e6031af179
crc32: 29AE59CB
md5: 4237c928e161b58577a5832c5d24682b
sha1: 81257463728ae76c312a88d4db9200932156acc6
sha256: f708226fea9e3f5739b3d37413eeee2b30cc290d0c801a3be8d2e8e6031af179
sha512: 827c4e95fb525eaa6c69c831d0ecad1cc1e62ae6985e5db80d41bcca35c9a2eb31da03ab623f4c0b13ceb871e6f75d0497f2d5ffb9a6fa37847bbd4b91e0a4c7
ssdeep: 24576:DOaguofchddddddddddddddddddddddddddddddddddddddddddddddddddddddH:DOp0
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T12ED63AC077B5E40ED2326974B925D6F55A26BCE2E826168B26477F0FB8312019EDDF03
sha3_384: a81ed7508672005bfc8dd4e2ba4bb13294c7561ee8254e472bf073434e82537f0b4e64f7384b877450cde313a218478c
ep_bytes: 8bff558bece8668a0000e8110000005d
timestamp: 2021-08-30 15:55:01

Version Info:

Translations: 0x0708 0x02be

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

Bkav W32.AIDetect.malware2
MicroWorld-eScan Trojan.GenericKDZ.87077
FireEye Generic.mg.4237c928e161b585
McAfee Packed-GEE!4237C928E161
Malwarebytes Trojan.MalPack.GS
Sangfor Trojan.Win32.Save.a
K7AntiVirus Riskware ( 00584baa1 )
K7GW Riskware ( 00584baa1 )
CrowdStrike win/malicious_confidence_100% (W)
Cyren W32/Kryptik.GKO.gen!Eldorado
Symantec ML.Attribute.HighConfidence
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/Kryptik.HPKL
APEX Malicious
ClamAV Win.Packed.Filerepmalware-9947507-0
Kaspersky HEUR:Backdoor.Win32.Tofsee.gen
BitDefender Trojan.GenericKDZ.87077
Avast Win32:Trojan-gen
Ad-Aware Trojan.GenericKDZ.87077
Sophos ML/PE-A + Troj/Krypt-FV
DrWeb Trojan.DownLoader44.58081
TrendMicro Mal_Tofsee
McAfee-GW-Edition BehavesLike.Win32.Generic.rm
Emsisoft Trojan.GenericKDZ.87077 (B)
SentinelOne Static AI – Malicious PE
Avira TR/AD.Tofsee.wjmni
MAX malware (ai score=84)
Microsoft Ransom:Win32/StopCrypt.PBL!MTB
GData Win32.Trojan.PSE.1BG8K11
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win.MalPE.R488463
Acronis suspicious
ALYac Trojan.GenericKDZ.87077
VBA32 TrojanSpy.Stealer
Cylance Unsafe
TrendMicro-HouseCall Mal_Tofsee
Rising Backdoor.Tofsee!8.1E9 (TFE:dGZlOgXNb5yh/71aBw)
Ikarus Trojan-Ransom.StopCrypt
Fortinet W32/Packed.GEE!tr
AVG Win32:Trojan-gen
Cybereason malicious.3728ae
Panda Trj/GdSda.A

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

Ransom:Win32/StopCrypt.PBL!MTB malware is very hard to eliminate by hand. It stores its data in a variety of locations throughout the disk, and can get back itself from one of the parts. In addition, a lot of changes in the windows registry, networking configurations and Group Policies are pretty hard to identify and revert to the initial. It is far better to utilize a special tool – exactly, an anti-malware program. GridinSoft Anti-Malware will definitely fit the best for malware elimination purposes.

Why GridinSoft Anti-Malware? It is really light-weight and has its detection databases updated just about every hour. In addition, it does not have such problems and vulnerabilities as Microsoft Defender does. The combination of these facts 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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