Categories: Malware

Win32/Kryptik.GBBN (file analysis)

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

  • Executable code extraction
  • Attempts to connect to a dead IP:Port (1 unique times)
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • Performs some HTTP requests
  • The binary likely contains encrypted or compressed data.
  • Uses Windows utilities for basic functionality
  • Deletes its original binary from disk
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Attempts to modify proxy settings
  • Creates a copy of itself
  • Anomalous binary characteristics

Related domains:

utkiubludki.bit
angelak.gdn
www.bing.com

How to determine Win32/Kryptik.GBBN?


File Info:

crc32: 5C808026md5: 48bf836b490a897d973ffeb6e2c0a23cname: 48BF836B490A897D973FFEB6E2C0A23C.mlwsha1: 258337e958649e3dc11eadab81c3475150e068ddsha256: 09779e1b27c489190721ae8b2e4477030ec3b2e3b88f598204bb677b43d684c7sha512: d541e3a743d0b359e856c927555e1523974fc55a96657c6a8bb623d7bb42b2301327a78a3eb6502b89722e70cb75a1b81327fa0eb0febb1a35009203511aa0d3ssdeep: 12288:NM44SfFg1If9NVUV7tU7YuhrGAU4Gpu6P7WXyC/Q:DhfFg1Ifva5tU7YmTU4GpRP7type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2017, ertueyrtuiyeInternalName: sdfasdfdas.exeFileVersion: 1.0.0.1ProductVersion: 1.0.0.1Translation: 0x0809 0x04b0

Win32/Kryptik.GBBN also known as:

Bkav W32.AIDetect.malware1
Lionic Trojan.Win32.Generic.4!c
Elastic malicious (high confidence)
CAT-QuickHeal Trojan.Chapak.ZZ6
ALYac Trojan.BRMon.Gen.3
Cylance Unsafe
Zillya Trojan.Jorik.Win32.423427
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
K7GW Trojan ( 0050a5bd1 )
K7AntiVirus Adware ( 00539ed31 )
Cyren W32/S-764584f1!Eldorado
ESET-NOD32 a variant of Win32/Kryptik.GBBN
APEX Malicious
Avast Win32:Malware-gen
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.Win32.Generic
NANO-Antivirus Trojan.Win32.CoinMiner.ewpbtw
Tencent Malware.Win32.Gencirc.11494789
Ad-Aware Trojan.BRMon.Gen.3
Sophos Mal/Generic-R + Mal/Ransom-FN
Comodo Malware@#1e6ryr5dj84vg
DrWeb Trojan.DownLoader26.7357
VIPRE Trojan.Win32.Generic!BT
TrendMicro TSPY_EMOTET.SMD3
FireEye Generic.mg.48bf836b490a897d
Emsisoft Trojan.BRMon.Gen.3 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Jorik.afgj
Avira HEUR/AGEN.1121589
eGambit Unsafe.AI_Score_97%
Arcabit Trojan.BRMon.Gen.3
SUPERAntiSpyware Trojan.Agent/Gen-Kryptik
ZoneAlarm HEUR:Trojan.Win32.Generic
Microsoft Trojan:Win32/Tiggre!rfn
AhnLab-V3 Win-Trojan/MalPe34.Suspicious.X2029
Acronis suspicious
McAfee GenericRXDR-LW!48BF836B490A
Malwarebytes Trojan.MalPack.GS
Panda Trj/CI.A
TrendMicro-HouseCall TSPY_EMOTET.SMD3
Rising Malware.Obscure/Heur!1.A89E (CLASSIC)
Yandex Trojan.GenAsa!E8d+Uq1q3xk
Ikarus Trojan.Win32.CoinMiner
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/GenKryptik.CNAR!tr
AVG Win32:Malware-gen
Paloalto generic.ml

How to remove Win32/Kryptik.GBBN?

  • 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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