Categories: Malware

About “Win32/Kryptik.GCJN” infection

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

  • Executable code extraction
  • Possible date expiration check, exits too soon after checking local time
  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • Reads data out of its own binary image
  • A process created a hidden window
  • Unconventionial language used in binary resources: Spanish (Guatemala)
  • The binary likely contains encrypted or compressed data.
  • Uses Windows utilities for basic functionality
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
  • Installs itself for autorun at Windows startup
  • Creates a copy of itself
  • Generates some ICMP traffic
  • Anomalous binary characteristics

Related domains:

shell.view
godz.bit

How to determine Win32/Kryptik.GCJN?


File Info:

crc32: 510F3A27md5: 48601267a26780588241320101a7da4aname: 48601267A26780588241320101A7DA4A.mlwsha1: c559adbc926d0fac5d2105e3ba7eeac82da0c55esha256: 40821e227196980aa58f724ce7abc6d7abf06bf676b06c60918223c5e434444bsha512: 5a58e30e7a8ade0802797b97393778c97781a47117e07013c562052624b28e1508909e73d8bed97807b2c58c1fec1cee4c62f61d4932f6f3be7c6e9e7a257676ssdeep: 1536:JGxLG/STxkirmRCxN5S/PrvlZSdnUvJzPkDrOEp7YLfXEddf7vwH9:JOC/SdkaaTlNCOEpcLP8UHtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2017, kpbjbvvgFileVersion: 11.0.0.1ProductVersion: 11.0.0.1Translation: 0x0809 0x04b0

Win32/Kryptik.GCJN also known as:

Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0053305e1 )
Lionic Trojan.Win32.Generic.4!c
Elastic malicious (high confidence)
DrWeb Trojan.DownLoad3.65491
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.Chapak.ZZ5
ALYac Trojan.BRMon.Gen.1
Cylance Unsafe
Zillya Trojan.Generic.Win32.314597
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:Win32/Gandcrab.e2890ccf
K7GW Trojan ( 0053305e1 )
Cybereason malicious.7a2678
Cyren W32/S-dc907ce6!Eldorado
Symantec Packed.Generic.525
ESET-NOD32 a variant of Win32/Kryptik.GCJN
APEX Malicious
Avast Win32:Malware-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.BRMon.Gen.1
NANO-Antivirus Trojan.Win32.Jorik.exohar
MicroWorld-eScan Trojan.BRMon.Gen.1
Tencent Win32.Trojan.Jorik.Pdci
Ad-Aware Trojan.BRMon.Gen.1
Sophos Mal/Generic-S + Mal/GandCrab-D
Comodo Application.Win32.IStartSurf.PS@8c4m91
BitDefenderTheta Gen:NN.ZexaF.34790.gu0@ai05IuKG
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_HPGANDCRAB.SMONT
McAfee-GW-Edition BehavesLike.Win32.Upatre.ch
FireEye Generic.mg.48601267a2678058
Emsisoft Trojan.BRMon.Gen.1 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Jorik.afpd
Avira HEUR/AGEN.1117310
Antiy-AVL Trojan/Generic.ASMalwS.244A28D
Microsoft Trojan:Win32/Gandcrab.GM!MTB
SUPERAntiSpyware Trojan.Agent/Gen-Kryptik
GData Trojan.BRMon.Gen.1
AhnLab-V3 Trojan/Win32.Jorik.C2387197
Acronis suspicious
McAfee Packed-ZG!48601267A267
MAX malware (ai score=99)
VBA32 Trojan.Miner
Malwarebytes Ransom.FileCryptor
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom_HPGANDCRAB.SMONT
Rising Trojan.Generic@ML.100 (RDML:33xuWUqRUf3ZYpFvjWVjXQ)
Yandex Trojan.GenAsa!fhvS/7HhIX4
Ikarus Trojan-Ransom.Agent
MaxSecure Ransomeware.CRAB.gen
Fortinet W32/Kryptik.GBHF!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.GandCrab.HwoCEpsA

How to remove Win32/Kryptik.GCJN?

  • 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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