Categories: Ransom

Ransom:Win32/StopCrypt!MSR removal tips

The Ransom:Win32/StopCrypt!MSR 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!MSR virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • At least one process apparently crashed during execution
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Dynamic (imported) function loading detected
  • Starts servers listening on 127.0.0.1:0
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid
  • Uses Windows utilities for basic functionality
  • Detects Sandboxie through the presence of a library
  • Detects Avast Antivirus through the presence of a library
  • Checks for the presence of known windows from debuggers and forensic tools
  • Created a process from a suspicious location
  • Steals private information from local Internet browsers
  • CAPE detected the DLInjector03 malware family
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization
  • Attempts to disable Windows Defender

How to determine Ransom:Win32/StopCrypt!MSR?


File Info:

name: 2A0A05BCAE0114F54320.mlwpath: /opt/CAPEv2/storage/binaries/d74a07eeb26faeed4799f582bcb3c22ba985cc7bf21685d3b6e37aa694a72d97crc32: 8F654ED7md5: 2a0a05bcae0114f543206ed1a81a8c69sha1: 0e6b17c5c3dcab55697b4589e8a239961fac9ed0sha256: d74a07eeb26faeed4799f582bcb3c22ba985cc7bf21685d3b6e37aa694a72d97sha512: 5aaee090fc713af1add2a040bb6cfdde26650c6991249d7cfe94bfdb04e5a9a65f2ede7db317a2eb67e0763a097c997612fbef2c9829053e81bb6d9afe97f9cbssdeep: 49152:xcBECpZgu2Wk+EwJ84vLRaBtIl9mTXcRjt0S:xaZ2WOCvLUBsKsFt0Stype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T11D7523717BE1C5B9D5406131AA8C2F7250FDC35E0B3116EB77D4C70EAF3C8929226A6Asha3_384: 9652ec437b9c2061ff51fed99992e64570d6513beb5563df20fef170f7e8fc7492bef4128dd66cd2ae6a84b205012920ep_bytes: 558bec6aff6898c24100680691410064timestamp: 2019-02-21 16:00:00

Version Info:

CompanyName: Igor PavlovFileDescription: 7z Setup SFXFileVersion: 19.00InternalName: 7zS.sfxLegalCopyright: Copyright (c) 1999-2018 Igor PavlovOriginalFilename: 7zS.sfx.exeProductName: 7-ZipProductVersion: 19.00Translation: 0x0409 0x04b0

Ransom:Win32/StopCrypt!MSR also known as:

Bkav W32.AIDetect.malware2
Lionic Trojan.Win32.Agentb.4!c
MicroWorld-eScan Trojan.AgentWDCR.ACQM
FireEye Trojan.AgentWDCR.ACQM
CAT-QuickHeal Trojan.PE_EXE
ALYac Trojan.AgentWDCR.ACQM
Cylance Unsafe
Sangfor Trojan.Win32.Sdum.gen
K7AntiVirus Trojan ( 0057f9a81 )
Alibaba Ransom:Win32/StopCrypt.0fd3664f
K7GW Trojan ( 0057f9a81 )
Cyren W32/Kryptik.EYC.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Smokeloader.F
APEX Malicious
Paloalto generic.ml
ClamAV Win.Packed.Barys-9859531-0
Kaspersky Trojan.Win32.Agentb.kmqd
BitDefender Trojan.AgentWDCR.ACQM
NANO-Antivirus Trojan.Win32.TrjGen.ixvlyj
Avast Win32:PWSX-gen [Trj]
Rising Trojan.Kryptik!1.C6FC (CLASSIC)
Ad-Aware Trojan.AgentWDCR.ACQM
Sophos Mal/Generic-S + Mal/Generic-L
Comodo Malware@#1hum2f7668mcr
DrWeb Trojan.Siggen14.45875
VIPRE Trojan.Win32.Generic!BT
TrendMicro TrojanSpy.Win32.QAKBOT.TIAOABEP
McAfee-GW-Edition RDN/Generic.grp
Emsisoft Trojan.AgentWDCR.ACQM (B)
SentinelOne Static AI – Suspicious PE
GData Win32.Trojan.Agent.POBWZK
Jiangmin Trojan.Sdum.rm
Avira TR/Agent.ghrg
Antiy-AVL Trojan/Generic.ASMalwS.3452F82
Kingsoft Win32.Troj.Undef.(kcloud)
Arcabit Trojan.AgentWDCR.ACQM
Microsoft Ransom:Win32/StopCrypt!MSR
Cynet Malicious (score: 100)
AhnLab-V3 Ransomware/Win.StopCrypt.C4572370
McAfee Artemis!2A0A05BCAE01
MAX malware (ai score=85)
VBA32 BScope.Adware.SpeedBit
Malwarebytes Malware.AI.684285136
TrendMicro-HouseCall TrojanSpy.Win32.QAKBOT.TIAOABEP
Tencent Win32.Trojan.Agentb.Hpsc
Yandex Trojan.Chapak!RS2nZZWtDPQ
Ikarus Trojan.Win32.Agent
eGambit Unsafe.AI_Score_99%
Fortinet W32/Chapak.ADHQ!tr
BitDefenderTheta Gen:NN.ZexaF.34062.cv0@aqgz2qiO
AVG Win32:PWSX-gen [Trj]
Panda Trj/WLT.G
CrowdStrike win/malicious_confidence_100% (W)
MaxSecure Trojan.Malware.73643692.susgen

How to remove Ransom:Win32/StopCrypt!MSR?

  • 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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