Categories: Backdoor

What is “Backdoor.MSIL.Crysan.bjy”?

The Backdoor.MSIL.Crysan.bjy 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 Backdoor.MSIL.Crysan.bjy virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Anomalous file deletion behavior detected (10+)
  • Dynamic (imported) function loading detected
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Created a process from a suspicious location
  • Installs itself for autorun at Windows startup
  • Anomalous binary characteristics

How to determine Backdoor.MSIL.Crysan.bjy?


File Info:

name: 9BB082906EF5E6B0E64E.mlwpath: /opt/CAPEv2/storage/binaries/d664f97da227676bd8e9be3067e9ff103185e0281f93639de36a34fa6ace8fd8crc32: 131556B4md5: 9bb082906ef5e6b0e64e63837bf97782sha1: d9ec0e151a671533dfe6f7960247632247bbce27sha256: d664f97da227676bd8e9be3067e9ff103185e0281f93639de36a34fa6ace8fd8sha512: 113045fceb367b1c7168710c660784772ce4a039cdc299b8d08ee85a66d91601f7ebf077dffb9224d75cbee2d12406d18ee2845e718063fb0704b47ea02627bfssdeep: 98304:Zviz/27qWGq/TzuqCDl2Ptao7jKZ5jgNT:Zviq75/TzufpZ6NTtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T11EF5334176CC042BC6B1137028FD23871FB9BCB352759B4EB0C5508E19674A5BABAFE6sha3_384: b1b61b6b025cc8ce84130310733b7adf406280d0ed9d7341d05865341362dca62a80749dca32080bbd60d873fb94b7c7ep_bytes: e800070000e9000000006a5868687240timestamp: 2000-11-24 11:50:57

Version Info:

CompanyName: Microsoft CorporationFileDescription: Auto-extracteur de fichier CAB Win32 FileVersion: 11.00.19041.322 (WinBuild.160101.0800)InternalName: Wextract LegalCopyright: © Microsoft Corporation. Tous droits réservés.OriginalFilename: WEXTRACT.EXE .MUIProductName: Internet ExplorerProductVersion: 11.00.19041.322Translation: 0x040c 0x04b0

Backdoor.MSIL.Crysan.bjy also known as:

Lionic Trojan.Win32.Stealer.trGK
MicroWorld-eScan Trojan.GenericKD.39630899
FireEye Generic.mg.9bb082906ef5e6b0
ALYac Trojan.Dropper.ZNM
Cylance Unsafe
Sangfor Suspicious.Win32.Strictor.243562
K7AntiVirus Trojan ( 00539f6a1 )
Alibaba Backdoor:MSIL/Crysan.b324bb75
K7GW Trojan ( 00539f6a1 )
Cybereason malicious.06ef5e
Cyren Dropper.BJYT
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/TrojanDropper.Agent.RVE
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Malware.Generic-6895514-0
Kaspersky Backdoor.MSIL.Crysan.bjy
BitDefender Trojan.GenericKD.39630899
NANO-Antivirus Trojan.Win32.NanoBot.hzndlb
Tencent Win32.Backdoor.Nanobot.Hwwe
Sophos Mal/Generic-S
Comodo Malware@#1k6vtoe0u788f
Zillya Dropper.Agent.Win32.436825
McAfee-GW-Edition BehavesLike.Win32.Dropper.wc
Emsisoft Trojan.GenericKD.39630899 (B)
Paloalto generic.ml
GData Trojan.GenericKD.39630899
Avira TR/Drop.Agent.bmjxz
Kingsoft Win32.Hack.Undef.(kcloud)
Arcabit Trojan.Generic.D25CB833
ViRobot Trojan.Win32.Z.Agent.3347456.B
Microsoft Trojan:Win32/Wacatac.B!ml
Cynet Malicious (score: 100)
McAfee Artemis!9BB082906EF5
MAX malware (ai score=82)
Malwarebytes Generic.Trojan.Malicious.DDS
Ikarus Trojan.Win32.Cab
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Agent.RVD!tr
AVG Win32:Trojan-gen
Panda Trj/CI.A
CrowdStrike win/malicious_confidence_90% (W)

How to remove Backdoor.MSIL.Crysan.bjy?

  • 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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