Categories: Malware

Win32/Kryptik.GYYA malicious file

The Win32/Kryptik.GYYA 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 Win32/Kryptik.GYYA virus can do?

  • Executable code extraction
  • Creates RWX memory
  • Drops a binary and executes it
  • Unconventionial binary language: Chinese (Simplified)
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • Deletes its original binary from disk
  • Attempts to remove evidence of file being downloaded from the Internet
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Installs itself for autorun at Windows startup
  • Network activity detected but not expressed in API logs
  • Creates a copy of itself

How to determine Win32/Kryptik.GYYA?


File Info:

crc32: 499C6BE9md5: c64a60155df398306852495141e3e6f0name: ocZ7jjBtLFPJ8Ak6EF.exesha1: b88f108b6faf4f3850c79f122b67c4270660ec3bsha256: b1b924ffa000f159145b654e7746383fa39122ca5396df563c9ac92b2e560aefsha512: be80017ff4786b5043785cc6f14f728d76dd3ff219f8f0dc6a858e4bc066fc5e4f3bddb08ff44ae81ce609528face3c26e97bb60a2a44768b858a66b4e7ccfe3ssdeep: 3072:FizbxqLRv2ZCvA1y1t3QoqVePUQGTbgYh/XsLlCP2w2:FOq55o10JQpeJGT8Yh/X8lS2Ptype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: x7248x6743x6240x6709 (C) 2002InternalName: DemoEditorFileVersion: 1, 0, 0, 1CompanyName: LegalTrademarks: ProductName: DemoEditor x5e94x7528x7a0bx5e8fProductVersion: 1, 0, 0, 1FileDescription: DemoEditor Microsoft x57fax7840x7c7bx5e94x7528x7a0bx5e8fOriginalFilename: DemoEditor.EXETranslation: 0x0804 0x04b0

Win32/Kryptik.GYYA also known as:

DrWeb Trojan.Emotet.762
MicroWorld-eScan Trojan.GenericKDZ.60461
McAfee RDN/Emotet-Dropped
Cylance Unsafe
CrowdStrike win/malicious_confidence_90% (W)
K7GW Riskware ( 0040eff71 )
K7AntiVirus Riskware ( 0040eff71 )
Arcabit Trojan.Generic.DEC2D
TrendMicro TrojanSpy.Win32.EMOTET.SMTHBGA.hp
BitDefenderTheta Gen:NN.ZexaF.32515.ny1@aGl4Fpgb
Cyren W32/Emotet.ACL.gen!Eldorado
ESET-NOD32 a variant of Win32/Kryptik.GYYA
APEX Malicious
Paloalto generic.ml
ClamAV Win.Trojan.Emotet-7417401-0
Kaspersky UDS:DangerousObject.Multi.Generic
BitDefender Trojan.GenericKDZ.60461
Endgame malicious (high confidence)
F-Secure Trojan.TR/AD.Emotet.dzoh
McAfee-GW-Edition RDN/Emotet-Dropped
Fortinet W32/Malicious_Behavior.VEX
Trapmine malicious.moderate.ml.score
FireEye Generic.mg.c64a60155df39830
F-Prot W32/Emotet.ACL.gen!Eldorado
Webroot W32.Malware.Gen
MAX malware (ai score=84)
Microsoft Trojan:Win32/Emotet!MTB
ZoneAlarm UDS:DangerousObject.Multi.Generic
AhnLab-V3 Malware/Win32.RL_Trojanspy.R301495
Acronis suspicious
Ad-Aware Trojan.GenericKDZ.60461
Malwarebytes Trojan.Emotet
Panda Trj/GdSda.A
TrendMicro-HouseCall TrojanSpy.Win32.EMOTET.SMTHBGA.hp
Ikarus Trojan.Win32.Krypt
GData Win32.Trojan.Agent.H5G38D
Qihoo-360 HEUR/QVM07.1.8D09.Malware.Gen

How to remove Win32/Kryptik.GYYA?

  • 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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