Ransom:Win32/StopCrypt.PAJ!MTB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Ransom:Win32/StopCrypt.PAJ!MTB detection name means that your computer is in big danger. This virus can correctly be named as ransomware – sort of malware which encrypts your files and forces you to pay for their decryption. Removing it requires some specific steps that must be done as soon as possible.
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Ransom:Win32/StopCrypt.PAJ!MTB detection is a malware detection you can spectate in your system. It frequently shows up after the provoking actions on your computer – opening the dubious e-mail messages, clicking the banner in the Internet or mounting the program from suspicious resources. From the instance it shows up, you have a short time to do something about it before it begins its harmful activity. And be sure – it is better not to wait for these destructive things.

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

Ransom:Win32/StopCrypt.PAJ!MTB is ransomware-type malware. It searches for the documents on your computer, encrypts it, and then asks you to pay the ransom for receiving the decryption key. Besides making your documents inaccessible, this malware additionally does a lot of harm to your system. It alters the networking settings in order to avoid you from reading the elimination guidelines or downloading the antivirus. Sometimes, Ransom:Win32/StopCrypt.PAJ!MTB can also stop the setup of anti-malware programs.

Ransom:Win32/StopCrypt.PAJ!MTB Summary

In total, Ransom:Win32/StopCrypt.PAJ!MTB ransomware 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;
  • Guard pages use detected – possible anti-debugging.;
  • Dynamic (imported) function loading detected;
  • Performs HTTP requests potentially not found in PCAP.;
  • A process created a hidden window;
  • CAPE extracted potentially suspicious content;
  • Unconventionial language used in binary resources: Spanish (Argentina);
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Deletes its original binary from disk;
  • Network activity contains more than one unique useragent.;
  • CAPE detected the OnlyLogger malware family;
  • Attempts to modify proxy settings;
  • Uses suspicious command line tools or Windows utilities;
  • Encrypting the files kept on the target’s drives — so the victim cannot open these documents;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of anti-malware apps

Ransomware has actually been a headache for the last 4 years. It is hard to imagine a more harmful malware for both individual users and companies. The algorithms used in Ransom:Win32/StopCrypt.PAJ!MTB (generally, 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 actually exists, and possibly will exist. However, that virus does not do all these bad things instantly – it may require up to a few hours to cipher all of your files. Therefore, seeing the Ransom:Win32/StopCrypt.PAJ!MTB detection is a clear signal that you should begin the removal procedure.

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

Common methods of Ransom:Win32/StopCrypt.PAJ!MTB injection are standard for all other ransomware examples. Those are one-day landing websites where victims are offered to download and install the free app, so-called bait emails and hacktools. Bait emails are a quite new tactic in malware spreading – you receive the e-mail that simulates some regular notifications about shippings or bank service conditions modifications. Inside of the email, there is a corrupted MS Office file, or a web link which opens the exploit landing page.

Malicious email spam

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

Preventing it looks fairly easy, however, still demands a lot of focus. Malware can hide in different places, and it is far better to prevent it even before it goes into your system than to trust in an anti-malware program. Standard cybersecurity knowledge is just an important thing in the modern world, even if your relationship with a PC stays on YouTube videos. That can keep you a lot of money and time which you would certainly spend while trying to find a fixing guide.

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

File Info:

name: 1D64AAA3D425237BE4BC.mlw
path: /opt/CAPEv2/storage/binaries/be381beb3435877071156380452d9ff94d519f7147e953864675c6b882649ea7
crc32: 7DE65B8E
md5: 1d64aaa3d425237be4bcb3619fe3e8ae
sha1: 37f766b56bc88dcd9d6857b4237260f2a9a7bf25
sha256: be381beb3435877071156380452d9ff94d519f7147e953864675c6b882649ea7
sha512: ddde0052395b5c1cfe2639c5057f2729a81bc601e10c27b36e55f9f6206d984d199b4714e6e5803f81e1ef5b095a8fc973a89356ba23c40b9475e51d34d35d53
ssdeep: 6144:fWysLP0scx+vxD/kBe+lE5Q0fcdpaHe44kqBp9Fuzbgwu:I4sO0/kMkkHe44LBp9Funn
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1B884DF313ADCC471C69312308860CBA55F7AF8216D7295C777A5376E1E30AEC9AF221E
sha3_384: 2d79051d95fb6dee0a4e3bc3ba544da98ac3f51d59494cdde049ec477292c9dde5efccf8b40d88723736f17fe5b44c0a
ep_bytes: e876570000e979feffffcccccccccccc
timestamp: 2021-03-16 21:57:50

Version Info:

InternationalName: bomgvioci.iwa
Copyright: Copyrighz (C) 2021, fudkort
ProjectVersion: 3.10.70.17
Translation: 0x0129 0x0794

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

Bkav W32.AIDetect.malware1
Lionic Trojan.Win32.Locky.j!c
Elastic malicious (high confidence)
DrWeb Trojan.Siggen16.30685
MicroWorld-eScan Trojan.GenericKDZ.82213
FireEye Generic.mg.1d64aaa3d425237b
ALYac Trojan.GenericKDZ.82213
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 003e58dd1 )
Alibaba Ransom:Win32/StopCrypt.0354d937
K7GW Trojan ( 003e58dd1 )
Cybereason malicious.56bc88
BitDefenderTheta Gen:NN.ZexaF.34114.xqW@aKN0flU
Cyren W32/Mikey.BZ.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.HNYM
TrendMicro-HouseCall TROJ_GEN.R002H0CAB22
Paloalto generic.ml
ClamAV Win.Malware.Generic-9935569-0
Kaspersky HEUR:Trojan.Win32.Agent.gen
BitDefender Trojan.GenericKDZ.82213
Avast Win32:Malware-gen
Ad-Aware Trojan.GenericKDZ.82213
Emsisoft Trojan.GenericKDZ.82213 (B)
McAfee-GW-Edition BehavesLike.Win32.Injector.fh
Sophos Mal/Generic-R + Mal/Agent-AWV
SentinelOne Static AI – Suspicious PE
Jiangmin TrojanSpy.Stealer.mvy
Webroot W32.Trojan.Gen
Avira TR/AD.Chapak.jlgtm
MAX malware (ai score=87)
Antiy-AVL Trojan/Generic.ASMalwS.35030FC
Microsoft Ransom:Win32/StopCrypt.PAJ!MTB
GData Win32.Trojan.BSE.16VOW5Z
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win.MalPE.R464212
McAfee Artemis!1D64AAA3D425
VBA32 BScope.Trojan.Convagent
Malwarebytes Trojan.MalPack.GS
APEX Malicious
Rising Trojan.Kryptik!1.DB29 (CLOUD)
Yandex Trojan.Agent!xL5ww1ftcn4
Ikarus Trojan.Win32.Crypt
Fortinet W32/GenKryptik.ERHN!tr
AVG Win32:Malware-gen
Panda Trj/GdSda.A
CrowdStrike win/malicious_confidence_100% (W)

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

Ransom:Win32/StopCrypt.PAJ!MTB malware is extremely hard to remove manually. It places its data in a variety of places throughout the disk, and can restore itself from one of the elements. Additionally, a number of modifications in the windows registry, networking configurations and Group Policies are really hard to identify and return to the initial. It is much better to utilize a special tool – exactly, an anti-malware app. GridinSoft Anti-Malware will definitely fit the most ideal for malware elimination reasons.

Why GridinSoft Anti-Malware? It is very lightweight and has its detection databases updated just about every hour. In addition, it does not have such problems and exposures as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware perfect for getting rid of malware of any kind.

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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