Categories: Trojan

MemScan:Trojan.Agent.CYIX (B) removal instruction

The MemScan:Trojan.Agent.CYIX (B) 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 MemScan:Trojan.Agent.CYIX (B) virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Behavioural detection: Executable code extraction – unpacking
  • At least one process apparently crashed during execution
  • Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • Dynamic (imported) function loading detected
  • Enumerates running processes
  • 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
  • A scripting utility was executed
  • Uses Windows utilities for basic functionality
  • Behavioural detection: Injection (Process Hollowing)
  • Executed a process and injected code into it, probably while unpacking
  • Behavioural detection: Injection (inter-process)
  • Installs itself for autorun at Windows startup
  • CAPE detected the DarkComet malware family

How to determine MemScan:Trojan.Agent.CYIX (B)?


File Info:

name: 4FF0691832515899144F.mlwpath: /opt/CAPEv2/storage/binaries/b6ec022ba08a981602c031ef950783b112f0bdd755180f686d6e41bab9bc1c6ccrc32: B119A050md5: 4ff0691832515899144f323ff2ae8226sha1: 963e4053961a5203112185cc3ac00cfd0528a0d0sha256: b6ec022ba08a981602c031ef950783b112f0bdd755180f686d6e41bab9bc1c6csha512: 36f337c7c0d53df9e8dc7277602ca0f9f00e58b97154a4b61a81c67bb0f01d2a3ab16f59ac651d8c947fd1329f13e2fa78289cf53e01e7d3b1503d326e4fedecssdeep: 12288:fu89O5h9vWpoTl20V3CgC98MsOX0P6uBQmX6cg4VVS37Oi6GfovyJB4cZw:fl9ofKM33RM8LiYQeg4iHTgqJBItype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1DA15235397D4C43BF4E963B025F862635BB4BCB0AEA4939F930498DC5CA1AC0367536Bsha3_384: faf90d723b4a13ad99ce6b61df03fbe425755c6fa2da9b57c76135784a7359aa687b8af7c8370b0999d157165d47b067ep_bytes: e80a000000e97affffffcccccccccc8btimestamp: 2004-08-04 06:01:37

Version Info:

CompanyName: Microsoft CorporationFileDescription: Win32 Cabinet Self-Extractor FileVersion: 6.00.2900.2180 (xpsp_sp2_rtm.040803-2158)InternalName: Wextract LegalCopyright: © Microsoft Corporation. All rights reserved.OriginalFilename: WEXTRACT.EXE ProductName: Microsoft® Windows® Operating SystemProductVersion: 6.00.2900.2180Translation: 0x0409 0x04b0

MemScan:Trojan.Agent.CYIX (B) also known as:

Elastic malicious (high confidence)
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.MauvaiseRI.S5260901
ALYac MemScan:Trojan.Agent.CYIX
Malwarebytes Malware.AI.51230689
VIPRE Trojan.Win32.Generic!BT
CrowdStrike win/malicious_confidence_100% (D)
BitDefender MemScan:Trojan.Agent.CYIX
K7GW Trojan ( 0050c96f1 )
K7AntiVirus Trojan ( 0050c96f1 )
Cyren W32/Injector.KNNU-9072
ESET-NOD32 Win32/Injector.DOIH
APEX Malicious
ClamAV Win.Malware.Cyix-6914663-0
Kaspersky HEUR:Trojan.Win32.Zenpak.gen
NANO-Antivirus Trojan.Win32.Yakes.eodtwh
MicroWorld-eScan MemScan:Trojan.Agent.CYIX
Rising Trojan.Injector!1.AFF6 (CLOUD)
Emsisoft MemScan:Trojan.Agent.CYIX (B)
Comodo Malware@#rdqsmtornfu
DrWeb DDoS.MP.5
TrendMicro BKDR_FYNLOSKI.ABFN
McAfee-GW-Edition GenericR-JRO!42A8D107A36E
FireEye Generic.mg.4ff0691832515899
Sophos Generic ML PUA (PUA)
SentinelOne Static AI – Suspicious SFX
Jiangmin Trojan.Yakes.uzc
Avira TR/Crypt.ZPACK.xejim
MAX malware (ai score=86)
Antiy-AVL Trojan/Generic.ASMalwS.20027CD
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Trojan:Win32/Sabsik.FL.B!ml
ZoneAlarm HEUR:Trojan.Win32.Zenpak.gen
GData MemScan:Trojan.Agent.CYIX
McAfee GenericR-JRO!42A8D107A36E
TACHYON Backdoor/W32.Hupigon.935936.B
VBA32 Trojan.Yakes
Cylance Unsafe
TrendMicro-HouseCall BKDR_FYNLOSKI.ABFN
Yandex Trojan.GenAsa!/B8ZMMSkYVs
Fortinet W32/Injector.DOIH!tr
BitDefenderTheta AI:Packer.164522CB23
AVG Win32:Malware-gen
Cybereason malicious.832515
Avast Win32:Malware-gen

How to remove MemScan:Trojan.Agent.CYIX (B)?

  • 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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