Categories: Backdoor

Backdoor.Win32.Bifrose.acci (file analysis)

The Backdoor.Win32.Bifrose.acci 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 Backdoor.Win32.Bifrose.acci virus can do?

  • Executable code extraction
  • Creates RWX memory
  • Starts servers listening on 0.0.0.0:81
  • Reads data out of its own binary image
  • Tries to unhook or modify Windows functions monitored by Cuckoo
  • Attempts to interact with an Alternate Data Stream (ADS)
  • Anomalous binary characteristics

How to determine Backdoor.Win32.Bifrose.acci?


File Info:

crc32: D8599465md5: c452c0f9278cd03867e8e56e16ef67bbname: C452C0F9278CD03867E8E56E16EF67BB.mlwsha1: 74226bc25d53091238ba9709ce99fc8efb7dd759sha256: f94712776092cc5734a30c31d14c9ed8e73a325882384d75d6fd3b504de8e7a6sha512: 336434106a3cc260268d1fe062f8070012cb7e3152ecf1b5d8b24ead1d16ca80086f3bd1f3d977e55616ca7200c0e73e5f2294ae88aba25f32edf3b0d6e9f536ssdeep: 12288:4Zss2QSJXO1tqaMI/alj3PNk4RfqiHtUKaLB3KfghN1N3GNK4nSQ+DiezRaCRI2:4Ztrk6bMNLkkPOnmNK4YDVamtype: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows

Version Info:

InternalName: BifrostFileVersion: 1, 2, 1, 0ProductName: BifrostProductVersion: 1, 2, 1, 0FileDescription: Bifrost 1.2.1OriginalFilename: Bifrost.exeTranslation: 0x0409 0x04b0

Backdoor.Win32.Bifrose.acci also known as:

Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 001788e91 )
Elastic malicious (high confidence)
DrWeb Trojan.Fakealert.36544
Cynet Malicious (score: 100)
CAT-QuickHeal VirTool.DelfInject.AF
ALYac Gen:Backdoor.Heur.Bifrose.Bn1@bmkkN3b
Zillya Tool.Bifrose.Win32.380
Sangfor Suspicious.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Backdoor:Win32/Bifrose.e453f003
K7GW Trojan ( 001788e91 )
Cybereason malicious.9278cd
Cyren W32/Bifrost.A.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Packed.MoleboxUltra suspicious
APEX Malicious
Avast FileRepMalware
Kaspersky Backdoor.Win32.Bifrose.acci
BitDefender Gen:Backdoor.Heur.Bifrose.Bn1@bmkkN3b
NANO-Antivirus Riskware.Win32.Bifrose.btwuau
MicroWorld-eScan Gen:Backdoor.Heur.Bifrose.Bn1@bmkkN3b
Tencent Win32.Trojan.Bifrose.Swuc
Ad-Aware Gen:Backdoor.Heur.Bifrose.Bn1@bmkkN3b
Sophos ML/PE-A + Mal/BigMole-B
Comodo Backdoor.Win32.Curioso.~dy02@1xq8fq
BitDefenderTheta AI:Packer.A66A18CA1F
VIPRE Packed.Win32.Rebhip.a (v)
TrendMicro TROJ_BREDLAB.SMD
McAfee-GW-Edition BehavesLike.Win32.Ransomware.tm
FireEye Generic.mg.c452c0f9278cd038
Emsisoft Gen:Backdoor.Heur.Bifrose.Bn1@bmkkN3b (B)
SentinelOne Static AI – Malicious PE
Jiangmin Constructor.Bifrose.jr
Webroot W32.Bifrose.Gen
Avira TR/Bifrose.EB.1
eGambit Generic.Malware
Antiy-AVL Trojan/Generic.ASBOL.C615
Microsoft Trojan:Win32/Wacatac.B!ml
SUPERAntiSpyware Heur.Agent/Gen-Bifrost
GData Gen:Backdoor.Heur.Bifrose.Bn1@bmkkN3b
Acronis suspicious
McAfee Artemis!C452C0F9278C
MAX malware (ai score=91)
VBA32 BScope.Trojan.Inject
Malwarebytes Backdoor.Bifrose
Panda Generic Malware
TrendMicro-HouseCall TROJ_BREDLAB.SMD
Rising Trojan.Generic@ML.100 (RDMK:wOckO+j8fVIP4FEEJEM/Rw)
Yandex Trojan.GenAsa!XMiXPNBz8gY
Ikarus Constructor.Win32.Bifrose
MaxSecure Packed.Rebhip.a
Fortinet W32/Refroso.BKBI!tr
AVG FileRepMalware

How to remove Backdoor.Win32.Bifrose.acci?

  • 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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