What is “MSIL/Spy.Agent.CYF”?

The MSIL/Spy.Agent.CYF 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.

GridinSoft Anti-Malware

Gridinsoft Anti-Malware

Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.

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What MSIL/Spy.Agent.CYF virus can do?

Network activity detected but not expressed in API logs

How to determine MSIL/Spy.Agent.CYF?


File Info:
crc32: E9DF2E4E
md5: b54e00097bcb426ac7b2964968b4a04c
name: B54E00097BCB426AC7B2964968B4A04C.mlw
sha1: 8bd24561944eafd41680d15866af1654dc509346
sha256: 557508e829e09c273ff152934050c903a20ceda314fe163ec93270db24cff023
sha512: 5eaa16e5481c0d529d05dabc36560fbed8518ac65cfbe7bdb4e31b9abeaad6f28528ba9d1a5f3abc68593f430f181f807d30a1833196c4d371bed288296b1f76
ssdeep: 12288:HkUR9GyeGBtXEvH5G1vfQFjIEiGXcmcm4QmQVo8MPlBEDODck:HkO9pBCvoZIFBiqZ4LB
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:
Translation: 0x0000 0x04b0
LegalCopyright:  
Assembly Version: 2.3.3.2
InternalName: Built.exe
FileVersion: 2.3.3.2
Comments: Programs
ProductVersion: 2.3.3.2
FileDescription: Programs
OriginalFilename: Built.exe

MSIL/Spy.Agent.CYF also known as:

K7AntiVirus	Spyware ( 005690661 )
Elastic	malicious (high confidence)
Cynet	Malicious (score: 100)
ALYac	Gen:Variant.Bulz.33740
Sangfor	Trojan.Win32.Save.a
CrowdStrike	win/malicious_confidence_70% (D)
BitDefender	Gen:Variant.Bulz.33740
K7GW	Spyware ( 005690661 )
Cybereason	malicious.97bcb4
Cyren	W32/MSIL_Agent.BZC.gen!Eldorado
Symantec	ML.Attribute.HighConfidence
ESET-NOD32	a variant of MSIL/Spy.Agent.CYF
APEX	Malicious
ClamAV	Win.Packed.Bulz-9865175-0
Kaspersky	HEUR:Trojan-Spy.MSIL.Stealer.gen
MicroWorld-eScan	Gen:Variant.Bulz.33740
Ad-Aware	Gen:Variant.Bulz.33740
BitDefenderTheta	Gen:NN.ZemsilF.34722.pn0@aKtroMd
McAfee-GW-Edition	GenericRXOC-TV!B54E00097BCB
FireEye	Generic.mg.b54e00097bcb426a
Emsisoft	Gen:Variant.Bulz.33740 (B)
SentinelOne	Static AI – Malicious PE
eGambit	Unsafe.AI_Score_90%
Microsoft	Trojan:Win32/AgentTesla!ml
Arcabit	Trojan.Bulz.D83CC
GData	MSIL.Trojan.PSE.1154JI2
AhnLab-V3	Trojan/Win.Generic.R418661
McAfee	GenericRXOC-TV!B54E00097BCB
MAX	malware (ai score=81)
Malwarebytes	Spyware.ApocalypseStealer
Ikarus	Trojan.MSIL.Spy
MaxSecure	Trojan.Malware.300983.susgen
Fortinet	MSIL/Stealer.CYF!tr

How to remove MSIL/Spy.Agent.CYF?

MSIL/Spy.Agent.CYF removal tool

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.

About the author

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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