Categories: Ransom

Ransom:Win32/StopCrypt.PAS!MTB removal instruction

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

  • 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
  • A process attempted to delay the analysis task.
  • Dynamic (imported) function loading detected
  • Performs HTTP requests potentially not found in PCAP.
  • HTTPS urls from behavior.
  • A process created a hidden window
  • CAPE extracted potentially suspicious content
  • Unconventionial language used in binary resources: Macedonian
  • 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
  • Behavioural detection: Injection (inter-process)
  • Behavioural detection: Transacted Hollowing
  • Created a process from a suspicious location
  • Collects and encrypts information about the computer likely to send to C2 server
  • Installs itself for autorun at Windows startup
  • STOP ransomware registry artifacts detected
  • CAPE detected the STOP malware family
  • Attempts to modify proxy settings
  • Creates a known STOP ransomware variant mutex
  • STOP ransomware command line behavior detected
  • Uses suspicious command line tools or Windows utilities

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


File Info:

name: 7B847F172A80BE2FB32F.mlwpath: /opt/CAPEv2/storage/binaries/09fade8e175f98fee0571b6405ce0209854b3e2a22ded3980be17bf3112520e0crc32: 7EBB910Fmd5: 7b847f172a80be2fb32f5f29e2afa792sha1: a7b9606249bfc0a32831bc6769c951bff8f27598sha256: 09fade8e175f98fee0571b6405ce0209854b3e2a22ded3980be17bf3112520e0sha512: 9301f0fa0856356ca35827b523fcc9f95f2700967932bb1c374d164b18e44f2cfa9d84a199581b711eb86289c0e54a5cfae136e3d2e04f342beb99e8ec08a8ecssdeep: 12288:rSeysgoiuRZX7CWE78nFXRDvLsYUpFQcDRUNu30ecqf/1Ic4v2S74hLs6:rSey8i+Z2WE78nFXhLRPctaqn1Ifvtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1DBF4120172C0C072D5A626B64879C7B14ABB7C665936AF9F7AC512FD0F253E2CF26342sha3_384: 227212dcbf14ad61cda50cb53c73d00ddb56d63fb58ad245808bc388dcca27de0a0a32a15bf615f3ca86bb8a97a5911aep_bytes: e815450000e978feffff8bff558bec81timestamp: 2020-09-04 13:03:46

Version Info:

FileVers: 65.51.36.16ProductVersa: 7.50.25.71InternalName: peatemasLegalCopyrighd: sharmirTranslation: 0x0169 0x0300

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

Bkav W32.AIDetect.malware1
Lionic Trojan.Win32.Scarsi.4!c
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKDZ.83189
CAT-QuickHeal Ransom.Stop.P5
ALYac Trojan.Ransom.Stop
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0058d91f1 )
Alibaba Ransom:Win32/StopCrypt.4c0f23f8
K7GW Trojan ( 0058d91f1 )
CrowdStrike win/malicious_confidence_90% (W)
Cyren W32/Kryptik.GDH.gen!Eldorado
Symantec Packed.Generic.620
ESET-NOD32 a variant of Win32/Kryptik.HODV
APEX Malicious
Paloalto generic.ml
ClamAV Win.Malware.Generic-9937750-0
Kaspersky HEUR:Trojan.Win32.Scarsi.gen
BitDefender Trojan.GenericKDZ.83189
Avast Win32:TrojanX-gen [Trj]
Tencent Win32.Trojan.Scarsi.Ajvo
Emsisoft Trojan.GenericKDZ.83189 (B)
TrendMicro Ransom_StopCrypt.R002C0DAV22
McAfee-GW-Edition BehavesLike.Win32.SoftPulse.bc
FireEye Generic.mg.7b847f172a80be2f
Sophos Mal/Generic-S
Ikarus Trojan.Win32.Crypt
Avira TR/AD.InstaBot.bffyn
MAX malware (ai score=82)
Antiy-AVL Trojan/Generic.ASMalwS.351CE63
Gridinsoft Ransom.Win32.STOP.sa
Microsoft Ransom:Win32/StopCrypt.PAS!MTB
ZoneAlarm HEUR:Trojan.Win32.Scarsi.gen
GData Trojan.GenericKDZ.83189
Cynet Malicious (score: 100)
AhnLab-V3 Ransomware/Win.Stop.R468727
McAfee Packed-GBE!7B847F172A80
VBA32 Malware-Cryptor.2LA.gen
Malwarebytes Trojan.MalPack.GS
TrendMicro-HouseCall Ransom_StopCrypt.R002C0DAV22
Rising Backdoor.Tofsee!8.1E9 (TFE:dGZlOgXNI1/SdesWgA)
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.73857037.susgen
Fortinet W32/GenKryptik.FQFQ!tr
BitDefenderTheta Gen:NN.ZexaF.34182.Uq0@aKxizbiG
AVG Win32:TrojanX-gen [Trj]
Cybereason malicious.249bfc
Panda Trj/GdSda.A

How to remove Ransom:Win32/StopCrypt.PAS!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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