Categories: Ransom

About “Ransom:Win32/StopCrypt.MCK!MTB” infection

The Ransom:Win32/StopCrypt.MCK!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.MCK!MTB virus can do?

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Attempts to connect to a dead IP:Port (1 unique times)
  • 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: Spanish (Nicaragua)
  • 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
dimonbk83.tumblr.com

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


File Info:

crc32: FC2C0688md5: b3ad9fabdff51407633e343daccefdccname: B3AD9FABDFF51407633E343DACCEFDCC.mlwsha1: 92facc8e117f8aaf59471befbea151b132c2a942sha256: ade30f792b463762fe44fb34def5ab38f4c06d3300d6ca9725fe609b31c3a4adsha512: f75940459c273533064851228bd0d93ca2a3a9ef329eb89c61217085c3d8149bd444cccfc5e3c5717f079150ed5cbc82fae266cdbbd02b0c7196d710a2dedce7ssdeep: 12288:xfSvBwkoSxf4RRlUTrg2BECMlsTg+gqKMj3+wX/7RgTxloFtQh/MGO1YzZqED:xfSpBpxfKzUTrg2BECQspX/7aLI+Md1type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

InternalName: sojbmoumunu.aheProductVersion: 8.19.590.38Copyright: Copyrighz (C) 2021, fudkagataTranslation: 0x0129 0x0167

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

Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 005822a21 )
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
ALYac Gen:Variant.Fragtor.18582
Cylance Unsafe
Sangfor Suspicious.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
K7GW Trojan ( 005822a21 )
Cyren W32/Kryptik.EWJ.gen!Eldorado
Symantec Packed.Generic.525
ESET-NOD32 a variant of Win32/Kryptik.HMKN
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Packed.Generic-9891933-0
Kaspersky HEUR:Trojan-Ransom.Win32.Stop.gen
BitDefender Gen:Variant.Fragtor.18582
MicroWorld-eScan Gen:Variant.Fragtor.18582
Ad-Aware Gen:Variant.Fragtor.18582
Sophos ML/PE-A
BitDefenderTheta Gen:NN.ZexaF.34142.Tq0@aeQEGAN
McAfee-GW-Edition BehavesLike.Win32.Generic.bc
FireEye Generic.mg.b3ad9fabdff51407
Emsisoft Trojan.Agent (A)
SentinelOne Static AI – Malicious PE
Jiangmin Backdoor.Androm.bbnt
Microsoft Ransom:Win32/StopCrypt.MCK!MTB
Gridinsoft Trojan.Win32.Packed.lu!heur
Arcabit Trojan.Fragtor.D4896
GData Gen:Variant.Fragtor.18582
AhnLab-V3 CoinMiner/Win.Glupteba.R440970
McAfee GenericRXPZ-FX!B3AD9FABDFF5
MAX malware (ai score=87)
Malwarebytes Trojan.MalPack.GS
Panda Trj/GdSda.A
Rising Trojan.Kryptik!1.D977 (CLASSIC)
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/GenKryptik.FKHU!tr
AVG Win32:Trojan-gen

How to remove Ransom:Win32/StopCrypt.MCK!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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