Categories: Backdoor

UDS:Backdoor.MSIL.Crysan.pef (file analysis)

The UDS:Backdoor.MSIL.Crysan.pef 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 UDS:Backdoor.MSIL.Crysan.pef virus can do?

  • Sample contains Overlay data
  • Presents an Authenticode digital signature
  • Unconventionial language used in binary resources: Korean
  • Authenticode signature is invalid
  • CAPE detected the zgRAT malware family
  • Anomalous binary characteristics

How to determine UDS:Backdoor.MSIL.Crysan.pef?


File Info:

name: 27805CE4185071D3B023.mlwpath: /opt/CAPEv2/storage/binaries/3bde2fc90d1804e845f56090464afb7f7fd1b4e153f2b8dec98b4c9c6dc81e79crc32: 5F986F28md5: 27805ce4185071d3b023cf91d884767dsha1: 3ece7a1c04c48617bb7236c5ee7b2f0728550664sha256: 3bde2fc90d1804e845f56090464afb7f7fd1b4e153f2b8dec98b4c9c6dc81e79sha512: 8597e28eb34251b6a1b0b69a539bbccc7705c5e3813e3b393844ff1d1f7745e29c4e64e70697327a5ba71f1e222e7245287f104aea0c4c75364452b230fef3f7ssdeep: 24576:mMMAdazhb82AmZFcBMgkySB+p/beoyF+/0dPeP/0dUIpk8W662Ipk8Xs1:mqMNI2A6sM1gKjIslePsGIpPW662IpPStype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T18465A62A7590CA93CD851B31E092D8F0D7F78DC8B643A60FA5C93F39B8333955B5A192sha3_384: de64d636a5afe01f55a701313f6895e327110aa288490de29efed1add734fa4b044725d9d57a825a2df958d6c4cf71ceep_bytes: 5bafe2e10f56cb9f1b85e374bd2685e9timestamp: 1995-08-15 05:27:12

Version Info:

CompanyName: (C) AfreecaTVFileDescription: AfreecaTV PackageFileVersion: 1.0.0.1InternalName: AfreecaTV PackageLegalCopyright: Copyright AfreecaTV Co., Ltd. All rights reserved. 2007, 2008LegalTrademarks: (C) AfreecaTVOriginalFilename: AfreecaTV PackageProductName: AfreecaTV PackageProductVersion: 1.0.0.1Translation: 0x0412 0x03b5

UDS:Backdoor.MSIL.Crysan.pef also known as:

Lionic Trojan.Win32.Crysan.m!c
DrWeb Trojan.MulDrop21.36563
MicroWorld-eScan Trojan.GenericKD.65289320
Skyhigh Artemis!Trojan
McAfee Artemis!27805CE41850
Cylance unsafe
CrowdStrike win/malicious_confidence_100% (W)
K7GW Trojan ( 004da5141 )
K7AntiVirus Trojan ( 004da5141 )
Arcabit Trojan.Generic.D3E43C68
Symantec Trojan.Gen.MBT
Cynet Malicious (score: 99)
Kaspersky UDS:Backdoor.MSIL.Crysan.pef
BitDefender Trojan.GenericKD.65289320
Tencent Malware.Win32.Gencirc.10bdd951
Emsisoft Trojan.GenericKD.65289320 (B)
F-Secure Backdoor.BDS/Redcap.jwdva
VIPRE Trojan.GenericKD.65289320
TrendMicro TROJ_GEN.R002C0XAA24
Sophos Mal/Generic-S
Ikarus Trojan.MSIL.Agent
Varist W32/ABRisk.KZFH-3071
Avira BDS/Redcap.jwdva
Antiy-AVL Trojan/MSIL.Kryptik
Microsoft Program:Win32/Wacapew.C!ml
ZoneAlarm HEUR:Backdoor.MSIL.Crysan.pef
GData Trojan.GenericKD.65289320
Google Detected
AhnLab-V3 Trojan/Win.Generic.C5363267
ALYac Trojan.GenericKD.65289320
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/Chgt.AD
TrendMicro-HouseCall TROJ_GEN.R002C0XAA24
Rising Malware.Obfus/MSIL@AI.100 (RDM.MSIL2:EtNFWi1YTuO4GHprJkyBiA)
SentinelOne Static AI – Suspicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet PossibleThreat
DeepInstinct MALICIOUS

How to remove UDS:Backdoor.MSIL.Crysan.pef?

  • 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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