Categories: Malware

About “Win32/Bifrose.NKY” infection

The Win32/Bifrose.NKY 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/Bifrose.NKY virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • CAPE extracted potentially suspicious content
  • Authenticode signature is invalid
  • Behavioural detection: Injection (Process Hollowing)
  • Behavioural detection: Injection (inter-process)
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization
  • Attempts to disable UAC
  • Attempts to modify or disable Security Center warnings

How to determine Win32/Bifrose.NKY?


File Info:

name: 9BE417EF0EFCF46431E6.mlwpath: /opt/CAPEv2/storage/binaries/150aebaf1e05e771883afee960801a81b198bacb150c464190b57ef39135d8f4crc32: 4593968Bmd5: 9be417ef0efcf46431e6b36c011dd6easha1: 2e791d6b54645825130609d57066724a852c4027sha256: 150aebaf1e05e771883afee960801a81b198bacb150c464190b57ef39135d8f4sha512: 49f426821a4d4e6dd256da85b7e540b52d5c0fb344dbd4ebf45699d61ab5b9aeca8e3bf7990f12861690c322f2e0dcb5f37fb1bbd3beb27992da12f0f918a873ssdeep: 3072:hL/Y+7IyL0j6xd1D2WsCjbbGDxi5ok3Gr7:WYbrnSi5okStype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T11B343B3A29BD5227D1B5C6B5CBD68837F010E87B34112D36A8C767598727D8368CB23Esha3_384: 412378c449e22f4816b43f3ad1434d8ab738746007e90bf6e18be643c9aed89f4707c6b106f6d72087e514af226bc78dep_bytes: 682c174000e8eeffffff000000000000timestamp: 2008-05-19 04:30:51

Version Info:

Translation: 0x0409 0x04b0Comments: KqzzyCohoSffvyBCompanyName: ZcqLNQhbEUnHbFileDescription: kRjUZynkewtQmKQLegalCopyright: oftDmmZLnIProductName: JTpCpcDaYFileVersion: 1.00ProductVersion: 1.00InternalName: StubexeOriginalFilename: Stubexe.exe

Win32/Bifrose.NKY also known as:

MicroWorld-eScan Gen:Heur.VB.Krypt.13
FireEye Generic.mg.9be417ef0efcf464
CAT-QuickHeal Trojan.Vbinject.UG8
Skyhigh BehavesLike.Win32.Infected.dt
ALYac Gen:Heur.VB.Krypt.13
Malwarebytes Generic.Malware.AI.DDS
VIPRE Gen:Heur.VB.Krypt.13
Sangfor Suspicious.Win32.Save.vb
K7AntiVirus Trojan ( 0054ec131 )
BitDefender Gen:Heur.VB.Krypt.13
K7GW Trojan ( 0054ec131 )
BitDefenderTheta AI:Packer.B8C1FF5420
Symantec Trojan.Gen.2
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/Bifrose.NKY
Cynet Malicious (score: 99)
APEX Malicious
ClamAV Win.Dropper.Bifrost-7777327-0
Kaspersky Trojan-Dropper.Win32.Injector.hthp
Alibaba TrojanDropper:Win32/Antivm.baba43d9
NANO-Antivirus Trojan.Win32.TrjGen.mcplz
Rising Trojan.AntiAV!1.647B (CLASSIC)
Sophos Troj/VB-JHN
F-Secure Trojan.TR/Dropper.Gen
Zillya Dropper.Injector.Win32.83131
TrendMicro Cryp_SpyEye
Emsisoft Gen:Heur.VB.Krypt.13 (B)
Ikarus Trojan.Win32.Zmunik
Webroot W32.Injector.Gen
Varist W32/VBInject.AC.gen!Eldorado
Avira TR/Dropper.Gen
MAX malware (ai score=99)
Antiy-AVL Trojan[Dropper]/Win32.Injector
Kingsoft malware.kb.a.1000
Microsoft Trojan:Win32/Antivm.YD!MTB
Xcitium TrojWare.Win32.VB.GE@4pqh5b
Arcabit Trojan.VB.Krypt.13
ZoneAlarm Trojan-Dropper.Win32.Injector.hthp
GData Gen:Heur.VB.Krypt.13
Google Detected
AhnLab-V3 Trojan/Win32.Xema.C12720
McAfee Generic VB.fo
DeepInstinct MALICIOUS
VBA32 Malware-Cryptor.VB.gen.7
Cylance unsafe
Panda Generic Malware
TrendMicro-HouseCall Cryp_SpyEye
Tencent Win32.Trojan-Dropper.Injector.Ljgl
Yandex Trojan.VBInject.Gen.8
SentinelOne Static AI – Suspicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Bifrose.NKY!tr
AVG Win32:Inject-AII [Trj]
Avast Win32:Inject-AII [Trj]
CrowdStrike win/malicious_confidence_100% (W)

How to remove Win32/Bifrose.NKY?

  • 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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