Ransom:Win32/StopCrypt.PAA!MTB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Ransom:Win32/StopCrypt.PAA!MTB detection name means that your computer is in big danger. This computer virus can correctly be named as ransomware – type of malware which encrypts 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.PAA!MTB detection is a malware detection you can spectate in your system. It often shows up after the provoking procedures on your computer – opening the suspicious email, clicking the advertisement in the Internet or mounting the program from unreliable sources. From the moment it shows up, you have a short time to take action before it starts its malicious action. And be sure – it is much better not to await these destructive actions.

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

Ransom:Win32/StopCrypt.PAA!MTB is ransomware-type malware. It searches for the documents on your disk drive, ciphers it, and then 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 setups in order to prevent you from checking out the removal guides or downloading the antivirus. Sometimes, Ransom:Win32/StopCrypt.PAA!MTB can also prevent the launching of anti-malware programs.

Ransom:Win32/StopCrypt.PAA!MTB Summary

In summary, Ransom:Win32/StopCrypt.PAA!MTB virus 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;
  • Possible date expiration check, exits too soon after checking local time;
  • Dynamic (imported) function loading detected;
  • A process created a hidden window;
  • CAPE extracted potentially suspicious content;
  • Unconventionial language used in binary resources: Spanish (Colombia);
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Behavioural detection: Injection (Process Hollowing);
  • Executed a process and injected code into it, probably while unpacking;
  • Detects Sandboxie through the presence of a library;
  • Detects Avast Antivirus through the presence of a library;
  • Behavioural detection: Injection (inter-process);
  • Created a process from a suspicious location;
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization;
  • Encrypting the documents located on the victim’s disk — so the victim cannot open these documents;
  • Blocking the launching of .exe files of security tools
  • Blocking the launching of installation files of security tools

Ransomware has actually been a horror story for the last 4 years. It is challenging to picture a more damaging malware for both individual users and organizations. The algorithms used in Ransom:Win32/StopCrypt.PAA!MTB (typically, 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. However, that malware does not do all these unpleasant things immediately – it may require up to several hours to cipher all of your files. Hence, seeing the Ransom:Win32/StopCrypt.PAA!MTB detection is a clear signal that you have to start the elimination procedure.

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

Ordinary ways of Ransom:Win32/StopCrypt.PAA!MTB spreading are typical for all other ransomware examples. Those are one-day landing websites where victims are offered to download the free program, so-called bait e-mails and hacktools. Bait emails are a relatively new tactic in malware distribution – you get the email that imitates some routine notifications about shippings or bank service conditions updates. Inside of the email, there is a corrupted 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 quite uncomplicated, however, still requires tons of focus. Malware can hide in different spots, and it is far better to prevent it even before it gets into your PC than to trust in an anti-malware program. Common cybersecurity knowledge is just an important item in the modern world, even if your relationship with a computer remains on YouTube videos. That can save you a lot of time and money which you would spend while seeking a solution.

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

File Info:

name: B74A70631ABB151D15A6.mlw
path: /opt/CAPEv2/storage/binaries/5e8e284c8420ac79bc36f7e749fdbbf6e22a4dfbd1f2ae78412a70b0abdb4367
crc32: 5EFB29A0
md5: b74a70631abb151d15a69a7509f8fd6e
sha1: fa95f6b709d121f40607fe7f71736c6e8462d184
sha256: 5e8e284c8420ac79bc36f7e749fdbbf6e22a4dfbd1f2ae78412a70b0abdb4367
sha512: dd383e89909262e9040b0bee55dd710a9683bed784f1ca3456d95c2e9230a2e18a7a7733314b32e1a3df8f346ad1e1012d0ea1018d27c5226f44e7a41083985c
ssdeep: 6144:GnUA1nsXVqbgbLqkVUvZXg0FvxvVWKpv6qGEI:GHalqbgXqkVuZXg0hxvV3vF
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T148648D1067E0D435F1F712F85AB9A279A53F7AE16B2490CF52E427EA56346E0EC3031B
sha3_384: 79ad1f98a245939fac8012d99eb06f5cd13be049f1274fead252312e4f148ec878be2be58ca42d41e221c9a91c549eee
ep_bytes: 8bff558bece856830000e8110000005d
timestamp: 2020-10-13 04:24:24

Version Info:

0: [No Data]

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

BkavW32.AIDetect.malware1
LionicTrojan.Win32.Mokes.m!c
Elasticmalicious (high confidence)
DrWebTrojan.Siggen16.412
MicroWorld-eScanTrojan.GenericKD.38213122
McAfeePacked-GEE!B74A70631ABB
CylanceUnsafe
SangforTrojan.Win32.Save.a
K7AntiVirusRiskware ( 0040eff71 )
AlibabaRansom:Win32/StopCrypt.24aeeb66
K7GWRiskware ( 0040eff71 )
CyrenW32/Kryptik.FSC.gen!Eldorado
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/Kryptik.HNPQ
Paloaltogeneric.ml
KasperskyHEUR:Backdoor.Win32.Mokes.gen
BitDefenderTrojan.GenericKD.38213122
AvastWin32:PWSX-gen [Trj]
Ad-AwareTrojan.GenericKD.38213122
EmsisoftTrojan.Crypt (A)
BaiduWin32.Trojan.Kryptik.jm
McAfee-GW-EditionBehavesLike.Win32.Worm.fh
FireEyeGeneric.mg.b74a70631abb151d
SophosML/PE-A
IkarusTrojan.Win32
JiangminBackdoor.Mokes.eve
WebrootW32.Malware.Gen
AviraTR/AD.MalwareCrypter.wgufd
MAXmalware (ai score=89)
KingsoftWin32.Hack.Undef.(kcloud)
MicrosoftRansom:Win32/StopCrypt.PAA!MTB
ArcabitTrojan.Generic.D2471602
GDataTrojan.GenericKD.38213122
CynetMalicious (score: 100)
Acronissuspicious
VBA32Backdoor.Mokes
ALYacTrojan.GenericKD.38213122
MalwarebytesTrojan.MalPack.GS
APEXMalicious
RisingMalware.Obscure/Heur!1.9E03 (CLASSIC)
SentinelOneStatic AI – Malicious PE
eGambitUnsafe.AI_Score_98%
FortinetW32/Kryptik.HMYL!tr
AVGWin32:PWSX-gen [Trj]
PandaTrj/GdSda.A
CrowdStrikewin/malicious_confidence_90% (W)
MaxSecureTrojan.Malware.300983.susgen

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

Ransom:Win32/StopCrypt.PAA!MTB malware is incredibly difficult to remove by hand. It places its documents in several locations throughout the disk, and can get back itself from one of the elements. Moreover, a number of alterations in the registry, networking settings and Group Policies are quite hard to locate and revert to the initial. It is far better to utilize a special tool – exactly, an anti-malware tool. GridinSoft Anti-Malware will fit the most ideal for malware removal reasons.

Why GridinSoft Anti-Malware? It is really light-weight and has its detection databases updated almost every hour. Moreover, it does not have such bugs and weakness as Microsoft Defender does. The combination of these details makes GridinSoft Anti-Malware ideal for removing 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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