Categories: Backdoor

How to remove “Backdoor.MSIL.Crysan.acs”?

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

  • Dynamic (imported) function loading detected
  • Authenticode signature is invalid
  • CAPE detected the AsyncRat malware family
  • Binary compilation timestomping detected

How to determine Backdoor.MSIL.Crysan.acs?


File Info:

name: 23FB4A07E2247B7A6CB4.mlwpath: /opt/CAPEv2/storage/binaries/2e30e8014dfc359d33a31cd47e4d7510478a610ddf6a2488f58efaea1df62f2fcrc32: C4DF4F8Fmd5: 23fb4a07e2247b7a6cb4b3f59214d014sha1: f1faffcc7abe9eb6a0e355598750712cc81ab4a7sha256: 2e30e8014dfc359d33a31cd47e4d7510478a610ddf6a2488f58efaea1df62f2fsha512: b8ff5ec70bb96319862173bbb12c0b79850ffd6634a4a913a456ce3b78bcd7130f70619433b808279c416b61ae63050661556f69f645b12fe4f3f95b658ad27fssdeep: 768:bqXwHbXXUIbpPkOicvHk3eHlWMPbPgF0q6KBO0Yv55YhKjaiYI6OCC2tYcFmVc6K:b5bpPXvZH0ub4Fr6jLhIKOW6OnKmVcltype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T11B231B003BE9813AD2BE4FB89CF1514587B6F6633603D65A3CC841D69B13BC6CA51AF6sha3_384: 9f4f41b2e77515a0270fadb4486fc4589b4bcb9fd6216bd1d2ecd428a2fbc393825e63266a38d582245e9fa4135a0324ep_bytes: ff250020400000000000000000000000timestamp: 2043-08-24 08:18:35

Version Info:

0: [No Data]

Backdoor.MSIL.Crysan.acs also known as:

Lionic Trojan.MSIL.Crysan.m!c
Elastic malicious (high confidence)
DrWeb Trojan.DownLoader31.47047
MicroWorld-eScan IL:Trojan.MSILZilla.2050
FireEye Generic.mg.23fb4a07e2247b7a
CAT-QuickHeal Trojan.WacatacFC.S12095901
ALYac IL:Trojan.MSILZilla.2050
Cylance Unsafe
Zillya Trojan.Agent.Win32.1633508
Sangfor Backdoor.MSIL.Crysan.acs
K7AntiVirus Trojan ( 700000121 )
Alibaba Backdoor:MSIL/Crysan.90a56f13
K7GW Trojan ( 700000121 )
Cybereason malicious.7e2247
BitDefenderTheta Gen:NN.ZemsilF.34294.cmW@aiaLoTo
Cyren W32/MSIL_Agent.KX.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of MSIL/Agent.CFQ
Paloalto generic.ml
ClamAV Win.Packed.Razy-7486442-0
Kaspersky Backdoor.MSIL.Crysan.acs
BitDefender IL:Trojan.MSILZilla.2050
NANO-Antivirus Trojan.Win32.Crysan.hpcczn
Avast Win32:BankerX-gen [Trj]
Tencent Msil.Backdoor.Crysan.Hssx
Ad-Aware IL:Trojan.MSILZilla.2050
Sophos Mal/Generic-S
Comodo Malware@#1tyk2v06w9ixs
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Trojan.pm
Emsisoft IL:Trojan.MSILZilla.2050 (B)
SentinelOne Static AI – Malicious PE
GData MSIL.Backdoor.DCRat.D
Jiangmin Backdoor.MSIL.cicp
Avira TR/Dropper.Gen
MAX malware (ai score=86)
Antiy-AVL Trojan/Generic.ASMalwS.2FD441C
Kingsoft Win32.Hack.Undef.(kcloud)
Arcabit IL:Trojan.MSILZilla.D802
Microsoft Trojan:MSIL/Ursu
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.AsyncRAT.C3502839
McAfee PWS-FCQR!23FB4A07E224
VBA32 TScope.Trojan.MSIL
Malwarebytes Trojan.Agent.ED
APEX Malicious
Rising Trojan.AntiVM!1.CF63 (CLASSIC)
Ikarus Trojan.MSIL.Agent
MaxSecure Trojan.Malware.74418669.susgen
Fortinet MSIL/CoinMiner.CFQ!tr
AVG Win32:BankerX-gen [Trj]
Panda Trj/GdSda.A
CrowdStrike win/malicious_confidence_100% (W)

How to remove Backdoor.MSIL.Crysan.acs?

  • 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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