Categories: Malware

Win32:Kryptik-OEY [Trj] removal guide

The Win32:Kryptik-OEY [Trj] 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-OEY [Trj] virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • 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
  • Performs HTTP requests potentially not found in PCAP.
  • Reads data out of its own binary image
  • A process created a hidden window
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • Authenticode signature is invalid
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Created a process from a suspicious location
  • Attempts to modify proxy settings
  • Anomalous binary characteristics

How to determine Win32:Kryptik-OEY [Trj]?


File Info:

name: EFBE3D670BF645D35811.mlwpath: /opt/CAPEv2/storage/binaries/87230c20b78565912580c71a53c25073f7f64503b56628c5fd1b49e1a3b8cefccrc32: 2BEB84F6md5: efbe3d670bf645d35811174dd9f870fcsha1: c0aee19bdd7779f62355b3d9c7bfb575309f054bsha256: 87230c20b78565912580c71a53c25073f7f64503b56628c5fd1b49e1a3b8cefcsha512: e78b6b810c2317ef59654a0b689fab81ef2ed926398aaf4a3fc67cebcdc5fd480a80e0dfbd33f50901e89894a994d724344f36f99c822c8a248b89938d995fdassdeep: 768:EQF2kcru+eCqgnStdgI2MyzNtRQtOflIwoHNV2XBFV72B4lA7rsiZ+GTN3:Em2kcinXcStdgI2MyzNtRQtOflIwoHNltype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T166B2D671F9C835C9D4661177F8BBA6D1960A7ECEE262CC0C65993F428BF324171A190Fsha3_384: c50f095f41a1f411cde3e3e02107a1e14e930578c6e6f5cd092bddf00a33b9b18edf70a071fe7c98b02b286301eded4aep_bytes: 5589e583ec3c6a008b15d4404000ffd2timestamp: 2013-10-07 14:11:55

Version Info:

Comments: CompanyName: IntelCorpFileDescription: app.exeFileVersion: 1.0.0.1InternalName: app.exeLegalCopyright: Copyright (C) 2002LegalTrademarks: OriginalFilename: app.exePrivateBuild: ProductName: AppProductVersion: 1.0.0.1SpecialBuild: Translation: 0x0800 0x0025

Win32:Kryptik-OEY [Trj] also known as:

Bkav W32.FamVT.GeND.Trojan
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKD.1323512
FireEye Generic.mg.efbe3d670bf645d3
CAT-QuickHeal TrojanDownloader.Upatre.A6
McAfee BackDoor-FBIM
Cylance Unsafe
VIPRE TrojanDownloader.Win32.Upatre.b (v)
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Trojan-Downloader ( 0040f6811 )
BitDefender Trojan.GenericKD.1323512
K7GW Trojan-Downloader ( 0040f6811 )
Cybereason malicious.70bf64
BitDefenderTheta Gen:NN.ZexaF.34182.bq1@a85SwF
VirIT Trojan.Win32.Banker.XN
Cyren W32/Trojan.MCTR-6586
Symantec Trojan.Zbot!gen71
ESET-NOD32 Win32/TrojanDownloader.Small.AAB
TrendMicro-HouseCall TROJ_UPATRE.SM37
ClamAV Win.Trojan.Upatre-3339
Kaspersky HEUR:Trojan.Win32.Generic
NANO-Antivirus Trojan.Win32.DownLoad3.clrfeb
Tencent Malware.Win32.Gencirc.10b34c2c
Emsisoft Trojan.GenericKD.1323512 (B)
Comodo TrojWare.Win32.TrojanDownloader.Small.NAF@52ikdq
DrWeb Trojan.DownLoad3.38113
Zillya Trojan.Bublik.Win32.12163
TrendMicro TROJ_UPATRE.SM37
McAfee-GW-Edition BehavesLike.Win32.Downloader.mm
SentinelOne Static AI – Malicious PE
Sophos ML/PE-A + Troj/Agent-AEDE
APEX Malicious
Jiangmin Trojan/Bublik.gbm
Avira TR/Crypt.ZPACK.78519
Antiy-AVL Trojan/Generic.ASMalwS.4AB937
Kingsoft Heur.SSC.2698946.0010.(kcloud)
Microsoft Trojan:Win32/Upatre.AMN!MTB
GData Trojan.GenericKD.1323512
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Zbot.R84340
VBA32 Trojan.FakePdf.12107
ALYac Trojan.GenericKD.1323512
MAX malware (ai score=81)
Malwarebytes Trojan.Agent.ED
Panda Trj/Zbot.M
Rising Downloader.Waski!1.A489 (RDMK:cmRtazo8bf0nZCWgO3jFXZOkxQT2)
Yandex Trojan.GenAsa!A0syjFh8d58
Ikarus Trojan.Win32.Bublik
MaxSecure Trojan.Upatre.Gen
Fortinet W32/Krypt.SLO!tr
AVG Win32:Kryptik-OEY [Trj]
Avast Win32:Kryptik-OEY [Trj]
CrowdStrike win/malicious_confidence_100% (D)

How to remove Win32:Kryptik-OEY [Trj]?

  • 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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