Ransom:Win32/StopCrypt.PY!MTB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Ransom:Win32/StopCrypt.PY!MTB malware detection usually means that your computer 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. Stopping it requires some unusual steps that must be taken as soon as possible.
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Ransom:Win32/StopCrypt.PY!MTB detection is a virus detection you can spectate in your system. It often shows up after the preliminary actions on your PC – opening the suspicious e-mail, clicking the banner in the Web or setting up the program from unreliable sources. From the instance it shows up, you have a short time to take action before it begins its malicious action. And be sure – it is better not to wait for these malicious actions.

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

Ransom:Win32/StopCrypt.PY!MTB is ransomware-type malware. It searches for the files on your computer, encrypts it, and after that asks you to pay the ransom for getting the decryption key. Besides making your files locked, this virus also does a lot of harm to your system. It changes the networking settings in order to avoid you from reading the removal tutorials or downloading the antivirus. Sometimes, Ransom:Win32/StopCrypt.PY!MTB can also stop the setup of anti-malware programs.

Ransom:Win32/StopCrypt.PY!MTB Summary

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

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Behavioural detection: Executable code extraction – unpacking;
  • At least one process apparently crashed during execution;
  • Dynamic (imported) function loading detected;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • CAPE extracted potentially suspicious content;
  • Unconventionial language used in binary resources: Spanish (Panama);
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Detects Sandboxie through the presence of a library;
  • Detects Avast Antivirus through the presence of a library;
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization;
  • Ciphering the files located on the target’s drive — so the victim cannot use these documents;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of anti-malware programs

Ransomware has been a major problem for the last 4 years. It is challenging to picture a more harmful virus for both individuals and organizations. The algorithms used in Ransom:Win32/StopCrypt.PY!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 already exists, and possibly will exist. But that malware does not do all these horrible things immediately – it may take up to a few hours to cipher all of your files. Hence, seeing the Ransom:Win32/StopCrypt.PY!MTB detection is a clear signal that you must begin the clearing procedure.

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

General tactics of Ransom:Win32/StopCrypt.PY!MTB distribution are typical for all other ransomware examples. Those are one-day landing web pages where users are offered to download the free software, so-called bait emails and hacktools. Bait emails are a pretty modern strategy in malware distribution – you receive the e-mail that simulates some regular notifications about deliveries or bank service conditions modifications. Within the e-mail, there is a malicious MS Office file, or a link which opens the exploit landing site.

Malicious email spam

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

Preventing it looks pretty simple, but still demands a lot of recognition. Malware can hide in different spots, and it is far better to stop it even before it invades your PC than to rely upon an anti-malware program. Standard cybersecurity knowledge is just an essential thing in the modern world, even if your interaction with a PC stays on YouTube videos. That may save you a lot of time and money which you would certainly spend while seeking a fixing guide.

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

File Info:

name: DBA2BF3A51A4022E94F3.mlw
path: /opt/CAPEv2/storage/binaries/31ed9bf5225cbef082f47cf2d4667cf83b706c706e64dbe9429c70f7dc0c0470
crc32: 6C4F2ED7
md5: dba2bf3a51a4022e94f35fe561a68011
sha1: 559217fefee0b8241f84773d1222cb6dbb79954e
sha256: 31ed9bf5225cbef082f47cf2d4667cf83b706c706e64dbe9429c70f7dc0c0470
sha512: 9e2ce4d4108758896790b8059e4a70ba929fafcf672b3ccc93ae2a600165ecfecc840eb94894e5b9f6544d8165244d145c6e9608894f56287da883866f16aff2
ssdeep: 6144:UK5NNsitKgLRQb10Dt3SXuZet0yAwTIOWjoUPNQ0:fGiIz0Dt3SXuZet0yAwT8oUe
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1FE649E10A7E0C434F5F716F889B993A8753EB9B16B2590CB62D036EE56356E0EC3035B
sha3_384: da70a6ae35425eb3bebf3738c32c613d88892c7095c0e47a401b655ff83aaedac5e8d21c93e99cacceb82b27c19b4ff0
ep_bytes: 8bff558bece806030000e8110000005d
timestamp: 2021-03-03 09:38:29

Version Info:

0: [No Data]

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

Bkav W32.AIDetect.malware1
Lionic Trojan.Win32.Agent.4!c
Elastic malicious (high confidence)
DrWeb Trojan.DownLoader44.7170
MicroWorld-eScan Trojan.GenericKD.38135116
ALYac Trojan.GenericKD.38135116
Cylance Unsafe
Sangfor Trojan.Win32.Agent.gen
K7AntiVirus Trojan ( 0058b0261 )
Alibaba Ransom:Win32/StopCrypt.0af6d196
K7GW Trojan ( 0058b0261 )
Cybereason malicious.efee0b
Cyren W32/Kryptik.FPK.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.HNNA
TrendMicro-HouseCall Trojan.Win32.PACKED.USMANKU21
Paloalto generic.ml
Kaspersky HEUR:Trojan.Win32.Agent.gen
BitDefender Trojan.GenericKD.38135116
NANO-Antivirus Trojan.Win32.Kryptik.jikioe
Avast Win32:MalwareX-gen [Trj]
Tencent Trojan-Spy.Win32.Stealer.16000122
Ad-Aware Trojan.GenericKD.38135116
Sophos Mal/Generic-S + Troj/Krypt-DY
Comodo fls.noname@0
Baidu Win32.Trojan.Kryptik.jm
Zillya Trojan.Kryptik.Win32.3648100
TrendMicro Trojan.Win32.PACKED.USMANKU21
McAfee-GW-Edition BehavesLike.Win32.MultiPlug.fm
FireEye Generic.mg.dba2bf3a51a4022e
Emsisoft Trojan.Crypt (A)
Ikarus Trojan.Agent
Jiangmin Backdoor.Mokes.eud
Webroot W32.Trojan.Dropper
Avira TR/Crypt.ZPACK.koidq
Antiy-AVL Trojan/Win32.Kryptik
Microsoft Ransom:Win32/StopCrypt.PY!MTB
Arcabit Trojan.Generic.D245E54C
ViRobot Trojan.Win32.Z.Agent.318976.EX
GData Win32.Trojan.BSE.1JF6AHQ
Cynet Malicious (score: 100)
AhnLab-V3 Packed/Win.GDV.R454526
Acronis suspicious
McAfee Packed-GDV!DBA2BF3A51A4
MAX malware (ai score=81)
VBA32 Backdoor.Mokes
Malwarebytes Trojan.MalPack.GS
APEX Malicious
Rising Malware.Obscure/Heur!1.9E03 (CLASSIC)
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_87%
Fortinet W32/Packed.GDV!tr
AVG Win32:MalwareX-gen [Trj]
Panda Trj/GdSda.A
CrowdStrike win/malicious_confidence_100% (W)
MaxSecure Trojan.Malware.771626.susgen

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

Ransom:Win32/StopCrypt.PY!MTB malware is very difficult to eliminate manually. It puts its data in numerous locations throughout the disk, and can get back itself from one of the parts. Furthermore, a lot of alterations in the windows registry, networking configurations and Group Policies are pretty hard to discover and change to the original. It is better to make use of a specific program – exactly, an anti-malware tool. GridinSoft Anti-Malware will fit the most ideal for virus elimination purposes.

Why GridinSoft Anti-Malware? It is very lightweight and has its databases updated almost every hour. Additionally, it does not have such problems and vulnerabilities as Microsoft Defender does. The combination of these aspects makes GridinSoft Anti-Malware suitable for getting rid of 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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