Categories: Malware

Win32/Kryptik.BCOI removal instruction

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

  • Behavioural detection: Executable code extraction – unpacking
  • Sample contains Overlay data
  • Uses Windows utilities for basic functionality
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • Authenticode signature is invalid
  • Uses Windows utilities to create a scheduled task
  • Checks the version of Bios, possibly for anti-virtualization
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization
  • Deletes executed files from disk
  • Collects information to fingerprint the system
  • Yara rule detections observed from a process memory dump/dropped files/CAPE

How to determine Win32/Kryptik.BCOI?


File Info:

name: 31FF34A4A65A87AD2EA8.mlwpath: /opt/CAPEv2/storage/binaries/d5a179b039097112cf027233e72a748191cd5a18ee437ad599f563cd1a0a9552crc32: D72927C0md5: 31ff34a4a65a87ad2ea873ccd27fa716sha1: f906c31b547bfefd1a643cdd2f797a098ccc5922sha256: d5a179b039097112cf027233e72a748191cd5a18ee437ad599f563cd1a0a9552sha512: ea8c015645d28d99e67d0bb0c2fe2e3d92cd17ea5ba4dee8c0eda81149a19497e1f429ecf3144426466d239d55827d3aba6bbb7c0d02d46ad38ba4dc43f7ab2fssdeep: 3072:MHsM3Fw74dAtMYg+z5T0gfLiwmgcb6QvJEjgp/utHmS:MV3Fw7xg+DrA7v/zStype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T196F46D233CCD99F8D3552C7C0D46EC3C972AB3DB21274DC5F6D8425B4BBA20A95878A9sha3_384: 283f08af7e8f10e1cdfeab26a9af7dd19b2a5a2d043673ed32553b8badd582d83de829840524947556f8c30c21ec9990ep_bytes: e8230b0100e916feffff558bec515153timestamp: 2013-04-21 14:34:30

Version Info:

0: [No Data]

Win32/Kryptik.BCOI also known as:

Lionic Trojan.Win32.Generic.lIKC
Elastic malicious (high confidence)
FireEye Generic.mg.31ff34a4a65a87ad
K7AntiVirus Trojan ( 0055dd191 )
K7GW Trojan ( 0055dd191 )
CrowdStrike win/malicious_confidence_90% (D)
VirIT Trojan.Win32.Crypt2.BZQZ
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.BCOI
APEX Malicious
ClamAV Win.Trojan.Agent-1172782
Kaspersky HEUR:Trojan.Win32.Generic
NANO-Antivirus Trojan.Win32.Kryptik.fjhhut
Avast Win32:Malware-gen
Tencent Malware.Win32.Gencirc.10b92969
F-Secure Heuristic.HEUR/AGEN.1320180
DrWeb Trojan.DownLoader7.14920
Zillya Trojan.Pirminay.Win32.3071
McAfee-GW-Edition BehavesLike.Win32.Dropper.bm
Trapmine malicious.moderate.ml.score
Sophos Mal/EncPk-ACWD
Jiangmin Trojan/Generic.azper
Webroot W32.Malware.Gen
Google Detected
Avira HEUR/AGEN.1320180
Antiy-AVL Trojan/Win32.AGeneric
Kingsoft malware.kb.a.999
Xcitium TrojWare.Win32.Kryptik.BVTK@54vyd3
ZoneAlarm HEUR:Trojan.Win32.Generic
Microsoft Trojan:Win32/Vundo
Cynet Malicious (score: 99)
McAfee GenericRXAA-AA!31FF34A4A65A
VBA32 BScope.Trojan.Swizzor
Cylance unsafe
Panda Trj/Genetic.gen
Rising Trojan.Vundo!8.4FC (TFE:5:dTUXH7Ry2yC)
Ikarus Trojan.Win32.Pirminay
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Kryptik.PR!tr
BitDefenderTheta Gen:NN.ZexaF.36738.TmX@aWhrVFp
AVG Win32:Malware-gen
Cybereason malicious.b547bf
DeepInstinct MALICIOUS

How to remove Win32/Kryptik.BCOI?

  • 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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