Categories: Backdoor

Backdoor:Win32/Bifrose.ES (file analysis)

The Backdoor:Win32/Bifrose.ES 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.ES virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Sample contains Overlay data
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • CAPE detected the embedded win api malware family
  • Anomalous binary characteristics
  • Yara detections observed in process dumps, payloads or dropped files

How to determine Backdoor:Win32/Bifrose.ES?


File Info:

name: DE9859D69542BFEF5B5B.mlwpath: /opt/CAPEv2/storage/binaries/925637305d5e8eb734efd3ed38c092628d3513cc4836d01125cf62ccd10f673ccrc32: 05127922md5: de9859d69542bfef5b5b5821efdb1956sha1: 94a435743ead30729b54a15f3d791d4b3ec8d051sha256: 925637305d5e8eb734efd3ed38c092628d3513cc4836d01125cf62ccd10f673csha512: e280146c76b79368a790419fed764dc502a755adf3b027106b95b5090f6a5da750152a0235dc2bed964f2280812cb3e0a369c81370efa6ec540ee3e227339d71ssdeep: 3072:x6w+UCejNTYUFrBZHldZUQoBmE9ywzxNXXFs44iFfXyhOZXMVM6hM3FYUFrlOjZI:x6P6fyzB9PtJX74pO1MKXXqdKBykXMlYtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1592402EE4A85C44AE3FD563170D8C848A61DECF68BBA47FAC1C1F7B9D5FD42096050A2sha3_384: 36682cc6ff639083aa755e18aa171c7ae325e3e54563e7f7c93d6b586b3749b8b65241c8b4fb32a3c15480249d5571e9ep_bytes: 558bec83ec4456ff15141040008bf08atimestamp: 2007-07-24 13:02:46

Version Info:

0: [No Data]

Backdoor:Win32/Bifrose.ES also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Win32.Bifrose.lj8w
tehtris Generic.Malware
MicroWorld-eScan Backdoor.Bifrose.ZXE
FireEye Generic.mg.de9859d69542bfef
Skyhigh BehavesLike.Win32.Generic.dc
McAfee BackDoor-CEP.ak.gen.a
Cylance unsafe
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Riskware ( 0040eff71 )
Alibaba Backdoor:Win32/Bifrose.c2dc9fca
K7GW Riskware ( 0040eff71 )
CrowdStrike win/malicious_confidence_100% (W)
Arcabit Backdoor.Bifrose.ZXE
BitDefenderTheta AI:Packer.9150F90020
Symantec ML.Attribute.HighConfidence
Elastic malicious (high confidence)
ESET-NOD32 Win32/Bifrose.NHD
APEX Malicious
ClamAV Win.Trojan.Bifrose-420
Kaspersky Backdoor.Win32.Agent.uek
BitDefender Backdoor.Bifrose.ZXE
NANO-Antivirus Trojan.Win32.Agent.ciqch
Avast Win32:Agent-AAKP [Trj]
Tencent Malware.Win32.Gencirc.10b1a144
Sophos ML/PE-A
Baidu Win32.Backdoor.Bifrose.ac
F-Secure Trojan.TR/Agent.gdzs
DrWeb BackDoor.Bifrost.816
VIPRE Backdoor.Bifrose.ZXE
TrendMicro TROJ_AGENT.AGY
Trapmine malicious.high.ml.score
Emsisoft Backdoor.Bifrose.ZXE (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Agent.wpy
Webroot W32.Trojan.Gen
Google Detected
Avira TR/Agent.gdzs
Varist W32/Trojan.INKG-7127
Antiy-AVL Trojan[Backdoor]/Win32.Agent.uek
Kingsoft Win32.Hack.Agent.uek
Xcitium TrojWare.Win32.Agent.~MQ@7p29
Microsoft Backdoor:Win32/Bifrose.ES
ViRobot Backdoor.Win32.Agent.40349
ZoneAlarm Backdoor.Win32.Agent.uek
GData Backdoor.Bifrose.ZXE
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.CSon.R450
VBA32 Backdoor.Agent
ALYac Backdoor.Bifrose.ZXE
MAX malware (ai score=100)
Malwarebytes Generic.Malware.AI.DDS
Panda Bck/Bifrose.BHP
Zoner Trojan.Win32.36969
TrendMicro-HouseCall TROJ_AGENT.AGY
Rising Trojan.FakeIcon!1.9A3A (CLASSIC)
Yandex Trojan.GenAsa!M5CWC9hpa0Q
Ikarus Trojan.Win32.Midgare
Fortinet W32/Agent.CND!tr
AVG Win32:Agent-AAKP [Trj]
Cybereason malicious.43ead3
DeepInstinct MALICIOUS

How to remove Backdoor:Win32/Bifrose.ES?

  • 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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