Categories: Malware

Should I remove “Win32:AutoRun-COJ [Trj]”?

The Win32:AutoRun-COJ [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:AutoRun-COJ [Trj] virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • Authenticode signature is invalid
  • Behavioural detection: Injection (inter-process)
  • CAPE detected the embedded pe malware family
  • Attempts to disable Windows Auto Updates
  • Anomalous binary characteristics
  • Attempts to modify Explorer settings to prevent hidden files from being displayed
  • Yara detections observed in process dumps, payloads or dropped files

How to determine Win32:AutoRun-COJ [Trj]?


File Info:

name: F989C21FD6AD88033B3F.mlwpath: /opt/CAPEv2/storage/binaries/4d1b9f38410263fff4ddf1d1d810a79c2bf7f7ef86dc56f5c038e11531a28635crc32: 6A74FE0Cmd5: f989c21fd6ad88033b3ffa37cfcf76afsha1: 15818ea3b92879832baf1d36d40053d977a0f581sha256: 4d1b9f38410263fff4ddf1d1d810a79c2bf7f7ef86dc56f5c038e11531a28635sha512: 9318b63b08fd9facf1e75b9085eb1e83afb96de168d78b227340c4392e678b9be882e9b28be3aeb6403790f5e233dd8922e92e3fe7a902f3948efbc6a618ac50ssdeep: 6144:uoGDh4jLt4NVcWgyGELwXiS8T+bbhn7aRjS5ZgBbH:HGWntWyD1LiS8lS5ZItype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1FD3494157280F73ED925C6F43D5A8390A43AED3215A5AC07F6D26F2A73B1D97E221323sha3_384: 7c581f5d5d35d435984488ac0da5c0f5695340aae566b191ba29d5bf7857177dafaa6472d639391d56cc9f8293b1e0c3ep_bytes: 685c414000e8f0ffffff000000000000timestamp: 2012-01-18 19:54:22

Version Info:

Translation: 0x0409 0x04b0ProductName: DYywyaFcFileVersion: 1.00ProductVersion: 1.00InternalName: AeaPWgSKOriginalFilename: AeaPWgSK.exe

Win32:AutoRun-COJ [Trj] also known as:

Bkav W32.AIDetectMalware
AVG Win32:AutoRun-COJ [Trj]
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Chinky.7
FireEye Generic.mg.f989c21fd6ad8803
CAT-QuickHeal Trojan.Beebone.D
Skyhigh BehavesLike.Win32.VBObfus.dm
McAfee VBObfus.cm
Malwarebytes Pronny.Worm.Spreader.DDS
Sangfor Suspicious.Win32.Save.vb
K7AntiVirus EmailWorm ( 0054d10f1 )
K7GW EmailWorm ( 0054d10f1 )
CrowdStrike win/malicious_confidence_100% (W)
BitDefenderTheta Gen:NN.ZevbaF.36744.om0@a4L7Kyoi
VirIT Trojan.Win32.Zyx.HJ
Symantec W32.Changeup
ESET-NOD32 Win32/Pronny.AC
Cynet Malicious (score: 100)
APEX Malicious
ClamAV Win.Trojan.Vobfus-30
Kaspersky Worm.Win32.Vobfus.dezg
BitDefender Gen:Variant.Chinky.7
NANO-Antivirus Trojan.Win32.Diple.covlai
Avast Win32:AutoRun-COJ [Trj]
Rising Worm.VobfusEx!1.99DB (CLASSIC)
TACHYON Worm/W32.Vobfus.233472.C
Emsisoft Gen:Variant.Chinky.7 (B)
Baidu Win32.Worm.Pronny.d
F-Secure Trojan.TR/VB.Agent.auoa
DrWeb Trojan.VbCrypt.60
VIPRE Gen:Variant.Chinky.7
TrendMicro WORM_VOBFUS.SMAB
Trapmine suspicious.low.ml.score
Sophos W32/SillyFDC-GX
Ikarus Worm.Win32.Vobfus
GData Gen:Variant.Chinky.7
Jiangmin Worm.Vobfus.kwzs
Varist W32/VBcrypt.T.gen!Eldorado
Avira TR/VB.Agent.auoa
Antiy-AVL Worm/Win32.WBNA.gen
Kingsoft malware.kb.a.1000
Xcitium TrojWare.Win32.Diple.EMIB@4pez3w
Arcabit Trojan.Chinky.7
ViRobot Trojan.Win32.A.Diple.233472.K
ZoneAlarm Worm.Win32.Vobfus.dezg
Microsoft Worm:Win32/Vobfus!pz
Google Detected
AhnLab-V3 Trojan/Win32.Menti.R20177
Acronis suspicious
VBA32 BScope.Trojan.Diple
ALYac Gen:Variant.Chinky.7
MAX malware (ai score=87)
Cylance unsafe
Panda W32/Vobfus.GEV.worm
TrendMicro-HouseCall WORM_VOBFUS.SMAB
Tencent Worm.Win32.Vobfus.kad
Yandex Trojan.GenAsa!SbK12zg9s+k
SentinelOne Static AI – Malicious PE
Fortinet W32/Jorik_Vobfus.FELF!tr
Cybereason malicious.3b9287
DeepInstinct MALICIOUS

How to remove Win32:AutoRun-COJ [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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