Categories: Ransom

Ransom:Win32/StopCrypt.MHK!MTB (file analysis)

The Ransom:Win32/StopCrypt.MHK!MTB is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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What Ransom:Win32/StopCrypt.MHK!MTB virus can do?

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • A process created a hidden window
  • Drops a binary and executes it
  • Performs some HTTP requests
  • Unconventionial language used in binary resources: Arabic (Libya)
  • The binary likely contains encrypted or compressed data.
  • Executed a process and injected code into it, probably while unpacking
  • Network activity contains more than one unique useragent.
  • Installs itself for autorun at Windows startup
  • Writes a potential ransom message to disk
  • Attempts to modify proxy settings
  • Creates a copy of itself
  • Anomalous binary characteristics
  • Uses suspicious command line tools or Windows utilities

Related domains:

api.2ip.ua
securebiz.org
tbpws.top
mas.to

How to determine Ransom:Win32/StopCrypt.MHK!MTB?


File Info:

crc32: AF262872md5: b26b3f74ac19f1cd7a7f0816c5f60b58name: B26B3F74AC19F1CD7A7F0816C5F60B58.mlwsha1: 642c516c87065721f8d52ca81f43781096fa63ebsha256: ca60ed97fc35897fdb89daf1b39d312391137eefc93bfd96fd8f8264ab2b12a1sha512: 57d7c74438399d8b99e28158d42457e0f4580963a11218b044f5d326e0c8799a7282487077beea21c38836a32c547f405b4284c5fd3b2383375e5529e599de2essdeep: 12288:0w6Ws1CiWhiddE8XynvyOI10qIK7XG7HnypcP0qQBLmSgXZtELBmAx+E3Bai:0w6WuCvibHiFI10TjSpbqQwSgrEL1gEtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

InternalName: sojbmoeminu.iheProductVersion: 8.19.590.38Copyright: Copyrighz (C) 2021, fudkagataTranslation: 0x0129 0x0171

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

Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 004d37941 )
Lionic Trojan.Win32.Stop.j!c
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
ALYac Gen:Variant.Fragtor.24084
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/StopCrypt.efe171da
K7GW Trojan ( 004d37941 )
Cybereason malicious.c87065
Cyren W32/Kryptik.EWJ.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.DZIC
APEX Malicious
Avast Win32:PWSX-gen [Trj]
ClamAV Win.Packed.Generic-9895572-0
Kaspersky HEUR:Trojan-Ransom.Win32.Stop.gen
BitDefender Gen:Variant.Fragtor.24084
MicroWorld-eScan Gen:Variant.Fragtor.24084
Ad-Aware Gen:Variant.Fragtor.24084
Sophos ML/PE-A + Troj/Krypt-BO
BitDefenderTheta Gen:NN.ZexaF.34170.Vq0@a4W1hafO
McAfee-GW-Edition BehavesLike.Win32.Emotet.bc
FireEye Generic.mg.b26b3f74ac19f1cd
Emsisoft Trojan.Agent (A)
SentinelOne Static AI – Malicious PE
Jiangmin Backdoor.Mokes.eny
Webroot W32.Trojan.Gen
Avira TR/AD.InstaBot.phzij
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/StopCrypt.MHK!MTB
GData Gen:Variant.Fragtor.24084
AhnLab-V3 Trojan/Win.Racealer.R442291
Acronis suspicious
McAfee RDN/Generic PWS.y
MAX malware (ai score=88)
VBA32 BScope.Trojan.Racealer
Malwarebytes Trojan.MalPack.GS
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_StopCrypt.R002C0DIN21
Rising Trojan.Kryptik!1.D9B3 (CLASSIC)
Ikarus Win32.Outbreak
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Kryptik.DZIC!tr
AVG Win32:PWSX-gen [Trj]
Paloalto generic.ml

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

  • Download and install GridinSoft Anti-Malware.
  • Open GridinSoft Anti-Malware and perform a “Standard scan“.
  • Move to quarantine” all items.
  • Open “Tools” tab – Press “Reset Browser Settings“.
  • Select proper browser and options – Click “Reset”.
  • Restart your computer.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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