Categories: Malware

Win32:BHO-ACI [Trj] (file analysis)

The Win32:BHO-ACI [Trj] 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:BHO-ACI [Trj] virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • A process attempted to delay the analysis task.
  • Dynamic (imported) function loading detected
  • Reads data out of its own binary image
  • Drops a binary and executes it
  • Unconventionial binary language: Chinese (Simplified)
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid
  • Uses Windows utilities for basic functionality

How to determine Win32:BHO-ACI [Trj]?


File Info:

name: 6894228459A1721F7A6A.mlwpath: /opt/CAPEv2/storage/binaries/1d2fb5140e4b0abf71a3f8c550a6fdb3fe1e02f45b0af325fc1e1bf67c9739efcrc32: 8DC4434Cmd5: 6894228459a1721f7a6a29819de3bccasha1: d109ba21dad612533b7f345ae5b2976ca65392ebsha256: 1d2fb5140e4b0abf71a3f8c550a6fdb3fe1e02f45b0af325fc1e1bf67c9739efsha512: 71fd032c8db45de111c2a1bb90dd1cee9fe531f2aa40211da7b334bd4552abc01aea6cae2bad9d1503b7feeb73db2cc075581c3399b430f42d2643646662f0cbssdeep: 6144:AFlvC60dLy0+/FsuSGZW+tMKnF48rLRauSTvazEf9Y24jZbZ:AFlvC60xyR/FMUW+yu4MLUdTTCtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T10A846C02FB649275C5E318748A53AB2525AAAEC13F30A6CF33883E4D1A395C57375F4Bsha3_384: 8130d74a8e7186cf436bb4040eaddc6da79ef24882ec81cd840331fea2a8dd551a706cb2e8237907ebca0ddafb363daaep_bytes: 6a6068e0954400e83a120000bf940000timestamp: 2010-09-16 21:13:22

Version Info:

FileVersion: 1.0.0.30ProductVersion: 1.0.0.30Translation: 0x0804 0x03a8

Win32:BHO-ACI [Trj] also known as:

Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Wsgame.28681
MicroWorld-eScan Gen:Variant.OnlineGames.5
FireEye Generic.mg.6894228459a1721f
CAT-QuickHeal Trojan.OnLineGames.xi5
ALYac Gen:Variant.OnlineGames.5
Cylance Unsafe
Zillya Trojan.OnLineGames.Win32.76494
K7AntiVirus Trojan ( 0055e3dd1 )
K7GW Trojan ( 0055e3dd1 )
Cybereason malicious.459a17
BitDefenderTheta Gen:NN.ZexaF.34294.xu2@aSPaOEeb
Cyren W32/FakeGame.B.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Agent.RXZ
TrendMicro-HouseCall TROJ_STARTP.SML2
Cynet Malicious (score: 100)
Kaspersky Trojan-Downloader.Win32.Gamup.pxb
BitDefender Gen:Variant.OnlineGames.5
NANO-Antivirus Trojan.Win32.OnLineGames.cagpw
Avast Win32:BHO-ACI [Trj]
Tencent Trojan.Win32.BitCoinMiner.la
Ad-Aware Gen:Variant.OnlineGames.5
Sophos ML/PE-A + Troj/Darbyen-A
Comodo TrojWare.Win32.BHO.EFKMNB@4ok0yf
Baidu Win32.Trojan.BHO.n
VIPRE Trojan.Win32.Darbyen.A (v) (not malicious)
TrendMicro TROJ_STARTP.SML2
McAfee-GW-Edition BehavesLike.Win32.Generic.fh
Emsisoft Gen:Variant.OnlineGames.5 (B)
Ikarus Trojan.Win32.StartPage
GData Gen:Variant.OnlineGames.5
Jiangmin Trojan/PSW.OnLineGames.ccgw
Webroot W32.Malware.Gen
Avira TR/BHO.efkmnb
MAX malware (ai score=81)
Antiy-AVL Trojan/Generic.ASMalwS.2A4B
Arcabit Trojan.OnlineGames.5
ViRobot Trojan.Win32.PSWIGames.381240
Microsoft Trojan:Win32/BHO.EF
AhnLab-V3 Win-Trojan/Onlinegamehack21.Gen
Acronis suspicious
McAfee StartPage-NH
VBA32 TrojanPSW.OnLineGames.xg
Malwarebytes Malware.AI.3661604243
APEX Malicious
Rising Backdoor.Agent!1.69D8 (CLASSIC)
Yandex Trojan.GenAsa!6Ju1+ezyYvI
SentinelOne Static AI – Malicious PE
Fortinet W32/ZLob.AAAA!tr.dldr
AVG Win32:BHO-ACI [Trj]
Panda Trj/Lineage.LOE
CrowdStrike win/malicious_confidence_100% (D)
MaxSecure Downloader.Gamup.qmq

How to remove Win32:BHO-ACI [Trj]?

  • 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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