Categories: Malware

About “Win32/Bifrose.NIO” infection

The Win32/Bifrose.NIO 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.NIO 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)

How to determine Win32/Bifrose.NIO?


File Info:

name: 8436EA4FD39713575CDC.mlwpath: /opt/CAPEv2/storage/binaries/16c33a3e49e96f79b28d4426980ee9330cb79895023c44b856c4088f6b288ed4crc32: 30692C13md5: 8436ea4fd39713575cdc29d9a7422477sha1: 2979088d11eb365b2f0a76cf4f97cc361acdb225sha256: 16c33a3e49e96f79b28d4426980ee9330cb79895023c44b856c4088f6b288ed4sha512: 90c5a91af9a996f50014f0df2b100805d1130ac0853bb3397618f3a167e31af8a7152dad608223717cb44fdbd291022404f99a92cf87c854f6a570b7d369cad6ssdeep: 1536:/MJ249icel/Z01/NBX4UDpegM3zwACUJGLq42GrElP2T/1oHd5RVJ6sYTCFi10IN:UX0e1FB/DpKjCLHcYT4i10ImEM3Yrtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T101443E3A19BD123BD1A4CAB5CFC68827F454E47B34212D36A8D787998347D8369CB13Esha3_384: 8d8caf5d90d4124a05c8e0b3730413ba5e2a5d704a5fffc78e7fad9d863d0b4abd4038f65300e1f8a6a18ab4e13b528cep_bytes: 6844164000e8f0ffffff000000000000timestamp: 2012-03-03 18:23:02

Version Info:

Translation: 0x0409 0x04b0Comments: gvNiBvlQaaZCompanyName: zCQmoxHFileDescription: aNKEQUrMlrLegalCopyright: PGTeMMAmNkwKsJvProductName: VZcTsHAlSUpFileVersion: 1.00ProductVersion: 1.00InternalName: 3OriginalFilename: 3.exe

Win32/Bifrose.NIO also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Win32.Generic.4!c
MicroWorld-eScan Gen:Trojan.Heur.ZGY.7
ClamAV Win.Dropper.Bifrost-7777327-0
FireEye Generic.mg.8436ea4fd3971357
CAT-QuickHeal Trojan.Vbinject.UG8
Skyhigh Generic VB.fl
ALYac Gen:Trojan.Heur.ZGY.7
Cylance unsafe
Zillya Trojan.Bifrose.Win32.21468
Sangfor Suspicious.Win32.Save.vb
K7AntiVirus Trojan ( 0054ec131 )
Alibaba Trojan:Win32/Refroso.50267928
K7GW Trojan ( 0054ec131 )
Cybereason malicious.d11eb3
Symantec ML.Attribute.HighConfidence
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/Bifrose.NIO
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Trojan.Win32.Refroso.hphs
BitDefender Gen:Trojan.Heur.ZGY.7
NANO-Antivirus Trojan.Win32.VB.tzasq
SUPERAntiSpyware Trojan.Agent/Gen-Falleg[Cont]
Avast Win32:Inject-AII [Trj]
Tencent Win32.Trojan.Refroso.Mjgl
Sophos Troj/VB-JHN
F-Secure Backdoor.BDS/Bifrose.OB
VIPRE Gen:Trojan.Heur.ZGY.7
TrendMicro Cryp_SpyEye
Emsisoft Gen:Trojan.Heur.ZGY.7 (B)
Ikarus Trojan.Win32.Refroso
GData Gen:Trojan.Heur.ZGY.7
Webroot W32.Malware.Gen
Google Detected
Avira BDS/Bifrose.OB
Antiy-AVL Trojan/Win32.Nvert
Kingsoft malware.kb.a.1000
Xcitium TrojWare.Win32.Refroso.CTS@4l2cok
Arcabit Trojan.Heur.ZGY.7
ZoneAlarm Trojan.Win32.Refroso.hphs
Microsoft VirTool:Win32/VBInject.UG
Varist W32/VBInject.AC.gen!Eldorado
AhnLab-V3 Trojan/Win32.Refroso.R30043
McAfee Generic VB.fl
MAX malware (ai score=100)
VBA32 Malware-Cryptor.VB.gen.7
Malwarebytes Generic.Malware.AI.DDS
Panda Trj/Genetic.gen
TrendMicro-HouseCall Cryp_SpyEye
Rising HackTool.VBInject!1.6497 (CLASSIC)
SentinelOne Static AI – Suspicious PE
MaxSecure Trojan.Malware.7164915.susgen
Fortinet W32/Bifrose.NKY!tr
BitDefenderTheta AI:Packer.CB444DC315
AVG Win32:Inject-AII [Trj]
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_100% (W)

How to remove Win32/Bifrose.NIO?

  • 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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