Categories: Trojan

What is “Trojan:Win32/Ontonphu.B”?

The Trojan:Win32/Ontonphu.B 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 Trojan:Win32/Ontonphu.B virus can do?

  • Possible date expiration check, exits too soon after checking local time
  • A process attempted to delay the analysis task.
  • Drops a binary and executes it
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic
  • Performs some HTTP requests
  • Deletes its original binary from disk
  • Installs itself for autorun at Windows startup
  • Operates on local firewall’s policies and settings
  • Creates a copy of itself

Related domains:

yzf-r250.co.cc

How to determine Trojan:Win32/Ontonphu.B?


File Info:

crc32: A50DFEFFmd5: 79eac03e262f3d4dc1cd5a1cb0ea26ffname: 79EAC03E262F3D4DC1CD5A1CB0EA26FF.mlwsha1: 48156c17690b08908607d33fdee1417f07ed141csha256: 56b3a76c2231b4ced66267974c99f7b6637e436c3de0e52470f0513e9194dadcsha512: 6014b97487fa39dab6f8b7c32c111d6565c38a78cea0cc65494d9a119a01b7e7cbb9f59c8a37ebf7e6316a0cb313ab63c52e1aac75181f2b5517fae63dde9739ssdeep: 384:QeGd2B/zP4RIR6rHpkNggt7dNifOzsNtBk5VmLuQhOBMT1dv8RENIoUkxuc75Qi:Ek/zPc8YJkXtTi2YPOBMT1UhoUCeitype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Ontonphu.B also known as:

Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 7000000f1 )
Elastic malicious (high confidence)
DrWeb Trojan.DownLoader5.21548
Cynet Malicious (score: 100)
ALYac Gen:Trojan.ShellStartup.cKW@aaUs7eb
Cylance Unsafe
Zillya Tool.Ramagedos.Win32.3
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_90% (D)
Alibaba Trojan:Win32/Blocker.591090a2
K7GW Trojan ( 7000000f1 )
Cybereason malicious.e262f3
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Flooder.Ramagedos.E
APEX Malicious
Avast Win32:Virtu-F [Inf]
ClamAV Win.Trojan.Agent-616693
Kaspersky Trojan-Ransom.Win32.Blocker.jeyp
BitDefender Gen:Trojan.ShellStartup.cKW@aaUs7eb
NANO-Antivirus Trojan.Win32.Dwn.ouwwk
MicroWorld-eScan Gen:Trojan.ShellStartup.cKW@aaUs7eb
Tencent Win32.Trojan.Blocker.Alje
Ad-Aware Gen:Trojan.ShellStartup.cKW@aaUs7eb
Sophos ML/PE-A + Mal/Onton-A
Comodo Malware@#203dn7zn5ty6t
BitDefenderTheta AI:Packer.717C528D1E
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Dropper.nh
FireEye Generic.mg.79eac03e262f3d4d
Emsisoft Gen:Trojan.ShellStartup.cKW@aaUs7eb (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Generic.rfla
Webroot W32.Malware.Heur
Avira TR/ATRAPS.Gen
eGambit Unsafe.AI_Score_100%
Antiy-AVL Trojan/Generic.ASMalwS.F0CE74
Microsoft Trojan:Win32/Ontonphu.B
Arcabit Trojan.ShellStartup.EAA762
GData Gen:Trojan.ShellStartup.cKW@aaUs7eb
AhnLab-V3 Trojan/Win32.Agent.R51633
McAfee Artemis!79EAC03E262F
MAX malware (ai score=100)
VBA32 Trojan-Ransom.Blocker
Panda Trj/Genetic.gen
Rising Trojan.Generic@ML.83 (RDML:0rTi19SL6LmgK1HVm600vg)
Yandex Trojan.GenAsa!ikTQWPnJtjA
Ikarus Trojan.Flooder.JBO
MaxSecure Trojan.Malware.2588.susgen
Fortinet W32/CoinMiner.F
AVG Win32:Virtu-F [Inf]
Paloalto generic.ml

How to remove Trojan:Win32/Ontonphu.B?

  • 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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