Categories: Malware

What is “Win32:Kryptik-JKF [Trj]”?

The Win32:Kryptik-JKF [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-JKF [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
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Unconventionial language used in binary resources: Russian
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid
  • Anomalous binary characteristics

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


File Info:

name: 6BB5CC3B84E82C469B26.mlwpath: /opt/CAPEv2/storage/binaries/6d994fb5a1b27000f14e84d8ea9c8eee1bec6229f408f907ae67f636931285c4crc32: 9836925Dmd5: 6bb5cc3b84e82c469b263663ffd72a79sha1: a3a4ee4ca3cda9949a6ed70c65f551d812da7f34sha256: 6d994fb5a1b27000f14e84d8ea9c8eee1bec6229f408f907ae67f636931285c4sha512: 004252a98faa840d8382d45e7f1f229cdaba6b2812d6cd5a2fc5acba2a0168f7e21fd7d335381a2f144284370d9ae7c076a091919740fbb5d844ada250ed41b5ssdeep: 6144:yI7ZU5HTxL0dxMukjC8PGO/i80rsHQsOoZUAp3e6jfJ1ke6jfJ1z:OHN0DMJjC8TihrslOomGO6LJ1v6LJ1ztype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T12134F1023E871EF3E863127D5EBBDB199559E1B1BFA0E125338986DDC0821950B79B83sha3_384: c10a34679d5cf1b1e206e5b342c3bbd32986e9ccf756e2b18a56a7c77d648bd763cb2fe69c38d8f900963c7c5519016fep_bytes: 833d36d24200008b354bd4420085f60ftimestamp: 1992-06-19 22:22:17

Version Info:

0: [No Data]

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

Bkav W32.AIDetect.malware2
Lionic Trojan.Win32.CodecPack.lrku
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Razy.766997
FireEye Generic.mg.6bb5cc3b84e82c46
CAT-QuickHeal TrojanPWS.Zbot.Y
McAfee PWS-Zbot.gen.ahr
Cylance Unsafe
Zillya Trojan.Zbot.Win32.71031
Sangfor Trojan.Win32.Zbot.CI
Alibaba TrojanPSW:Win32/ArchSMS.2cf14e07
Cybereason malicious.b84e82
Baidu Win32.Virus.Krap.a
VirIT Trojan.Win32.SMSSend.DMX
Cyren W32/DelfInject.AM.gen!Eldorado
Symantec Packed.Generic.382
ESET-NOD32 Win32/Spy.Zbot.YW
APEX Malicious
ClamAV Win.Packed.Zbot-9771304-0
Kaspersky HEUR:Hoax.Win32.ArchSMS.gen
BitDefender Gen:Variant.Razy.766997
NANO-Antivirus Trojan.Win32.SmsSend.cbobaq
Avast Win32:Kryptik-JKF [Trj]
Tencent Malware.Win32.Gencirc.114c3702
Ad-Aware Gen:Variant.Razy.766997
Emsisoft Gen:Variant.Razy.766997 (B)
Comodo TrojWare.Win32.Injector.AWIS@50s9z7
DrWeb Trojan.SMSSend.2363
VIPRE Worm.Win32.Phorpiex.m (v)
TrendMicro TSPY_CRIDEX_CA080208.TOMC
McAfee-GW-Edition BehavesLike.Win32.ZBot.dh
Sophos Mal/Generic-R + Mal/EncPk-AEH
SentinelOne Static AI – Malicious PE
GData Gen:Variant.Razy.766997
Jiangmin Hoax.ArchSMS.atfo
Webroot W32.Rogue.Gen
Avira DR/Delphi.Gen8
Antiy-AVL Trojan/Generic.ASMalwS.F123D
ViRobot Trojan.Win32.A.Zbot.196609.F
ZoneAlarm HEUR:Hoax.Win32.ArchSMS.gen
Microsoft PWS:Win32/Zbot!CI
Cynet Malicious (score: 100)
AhnLab-V3 Spyware/Win32.Zbot.R33893
BitDefenderTheta Gen:NN.ZexaF.34212.oyZ@aOpG35bk
ALYac Gen:Variant.Razy.766997
MAX malware (ai score=100)
VBA32 Malware-Cryptor.Limpopo
Malwarebytes Spyware.ZeuS
TrendMicro-HouseCall TSPY_CRIDEX_CA080208.TOMC
Rising Spyware.Voltar!1.AF1D (CLOUD)
Ikarus Trojan-PWS.Win32.Zbot
MaxSecure Trojan.Malware.4315201.susgen
Fortinet W32/Zbot.EQPB!tr
AVG Win32:Kryptik-JKF [Trj]
Panda Trj/Pacrypt.D
CrowdStrike win/malicious_confidence_100% (D)

How to remove Win32:Kryptik-JKF [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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