Ransom:Win32/StopCrypt.PMA!MTB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Ransom:Win32/StopCrypt.PMA!MTB detection name usually means that your system is in big danger. This malware can correctly be identified as ransomware – sort of malware which encrypts your files and asks you to pay for their decryption. Deleteing it requires some peculiar steps that must be taken as soon as possible.
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Ransom:Win32/StopCrypt.PMA!MTB detection is a virus detection you can spectate in your computer. It usually appears after the preliminary actions on your computer – opening the untrustworthy email, clicking the advertisement in the Web or setting up the program from suspicious sources. From the second it appears, you have a short time to do something about it until it starts its harmful action. And be sure – it is far better not to await these harmful effects.

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

Ransom:Win32/StopCrypt.PMA!MTB is ransomware-type malware. It looks for the documents on your disk, encrypts it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your files locked, this malware also does a ton of harm to your system. It modifies the networking settings in order to avoid you from checking out the elimination tutorials or downloading the antivirus. In some cases, Ransom:Win32/StopCrypt.PMA!MTB can even stop the launching of anti-malware programs.

Ransom:Win32/StopCrypt.PMA!MTB Summary

Summarizingly, Ransom:Win32/StopCrypt.PMA!MTB ransomware actions in the infected PC 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;
  • Performs HTTP requests potentially not found in PCAP.;
  • Reads data out of its own binary image;
  • A process created a hidden window;
  • CAPE extracted potentially suspicious content;
  • Drops a binary and executes it;
  • 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);
  • Behavioural detection: Injection with CreateRemoteThread in a remote process;
  • Installs itself for autorun at Windows startup;
  • Installs itself for autorun at Windows startup;
  • Creates a hidden or system file;
  • CAPE detected the Tofsee malware family;
  • Anomalous binary characteristics;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files kept on the victim’s disk drives — so the victim cannot check these files;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of anti-virus programs

Ransomware has actually been a headache for the last 4 years. It is challenging to realize a more dangerous malware for both individual users and organizations. The algorithms utilized in Ransom:Win32/StopCrypt.PMA!MTB (usually, 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 virus does not do all these horrible things instantly – it can take up to a few hours to cipher all of your files. Thus, seeing the Ransom:Win32/StopCrypt.PMA!MTB detection is a clear signal that you have to start the clearing process.

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

Common tactics of Ransom:Win32/StopCrypt.PMA!MTB distribution are basic for all other ransomware examples. Those are one-day landing sites where users are offered to download the free program, so-called bait e-mails and hacktools. Bait emails are a relatively modern strategy in malware spreading – you receive the email that simulates some routine notifications about shipments or bank service conditions changes. Within the email, there is a corrupted MS Office file, or a link which opens the exploit landing page.

Malicious email spam

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

Avoiding it looks quite easy, however, still needs a lot of attention. Malware can hide in different spots, and it is much better to prevent it even before it gets into your PC than to rely upon an anti-malware program. Common cybersecurity awareness is just an important item in the modern world, even if your interaction with a PC remains on YouTube videos. That can keep you a great deal of time and money which you would spend while seeking a fixing guide.

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

File Info:

name: 6F4F82161F72D6A175B7.mlw
path: /opt/CAPEv2/storage/binaries/ca426f9393efe0c5fd3fe67704a17e29cbadec8c779195c4389a1cdca8b8630a
crc32: C04A5B3C
md5: 6f4f82161f72d6a175b7db1cbf451e31
sha1: b6a639867dcd9ef0f79dc23d3e892a602bf04b2d
sha256: ca426f9393efe0c5fd3fe67704a17e29cbadec8c779195c4389a1cdca8b8630a
sha512: 5eb7bf01712f9b2b1492c3ddfe0cfdcb46ee4f2d3f9e8fc1ae4a6027ae5dede983c00d7f1a47175d583725615dc3ba26fc49e99cc813026cdaf4228c93e04081
ssdeep: 6144:i5YgxbYSPYEHHTF929QbjCf0YUp8Td4lelCL:i59b3PJHHTF9/yXUOKv
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T154B638C077B5E40EE2329970B925D6F64526FCA2E826168B365B7F0FB8312114EDDB13
sha3_384: 099b3bfd5f2163be85f59b8d64963664feee3e7654cd39699884b36dff50da004adb2a6aa1f6b6ed3810a6fac974717e
ep_bytes: 8bff558bece8668a0000e8110000005d
timestamp: 2021-07-31 09:29:34

Version Info:

Translations: 0x0798 0x02be

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

BkavW32.AIDetect.malware2
tehtrisGeneric.Malware
MicroWorld-eScanTrojan.GenericKDZ.87168
ALYacTrojan.GenericKDZ.87168
CylanceUnsafe
SangforTrojan.Win32.Save.a
K7AntiVirusRiskware ( 00584baa1 )
K7GWRiskware ( 00584baa1 )
Cybereasonmalicious.67dcd9
CyrenW32/Kryptik.GKO.gen!Eldorado
SymantecML.Attribute.HighConfidence
Elasticmalicious (high confidence)
ESET-NOD32a variant of Win32/Kryptik.HPLK
APEXMalicious
ClamAVWin.Packed.Filerepmalware-9947507-0
KasperskyHEUR:Backdoor.Win32.Gulpix.gen
BitDefenderTrojan.GenericKDZ.87168
AvastWin32:AceCrypter-W [Cryp]
Ad-AwareTrojan.GenericKDZ.87168
EmsisoftTrojan.GenericKDZ.87168 (B)
DrWebTrojan.PWS.Stealer.32991
TrendMicroMal_Tofsee
McAfee-GW-EditionBehavesLike.Win32.Generic.vm
FireEyeGeneric.mg.6f4f82161f72d6a1
SophosML/PE-A + Troj/Krypt-FV
IkarusTrojan-Ransom.StopCrypt
GDataWin32.Trojan.PSE.12ZYE8D
MicrosoftRansom:Win32/StopCrypt.PMA!MTB
CynetMalicious (score: 100)
AhnLab-V3Trojan/Win.MalPE.R488344
Acronissuspicious
McAfeePacked-GEE!6F4F82161F72
MAXmalware (ai score=87)
VBA32TrojanSpy.Stealer
MalwarebytesTrojan.MalPack.GS
TrendMicro-HouseCallMal_Tofsee
RisingTrojan.Generic@AI.100 (RDML:cQAm+E2Cx/q4CS2kpXWHpw)
SentinelOneStatic AI – Malicious PE
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/Packed.GEE!tr
AVGWin32:AceCrypter-W [Cryp]
PandaTrj/GdSda.A

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

Ransom:Win32/StopCrypt.PMA!MTB malware is incredibly difficult to remove manually. It stores its files in multiple locations throughout the disk, and can recover itself from one of the parts. Additionally, a lot of modifications in the windows registry, networking settings and Group Policies are fairly hard to discover and return to the original. It is better to make use of a special app – exactly, an anti-malware tool. GridinSoft Anti-Malware will fit the most ideal for malware elimination purposes.

Why GridinSoft Anti-Malware? It is very light-weight and has its detection databases updated nearly every hour. Moreover, it does not have such bugs and exposures 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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