Categories: Malware

What is “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: AF178840F3925D423496.mlwpath: /opt/CAPEv2/storage/binaries/7698cef27bcf004cdc8005c0fe2a8894ec8de6b59155330c3c0a6e8665455192crc32: BB7F704Bmd5: af178840f3925d423496e13bfd0ef995sha1: 2cc3b9300ea6428daa7ba13db627320b595820b7sha256: 7698cef27bcf004cdc8005c0fe2a8894ec8de6b59155330c3c0a6e8665455192sha512: e439ac37e0ee7fea63963bcb4db5938230e9f098f5010056a7ed48d0b336f97a4f87b485e6a8a9e259500b71623fc533de7e45e9a7176d262f3ee6fbeae61a10ssdeep: 6144:gJGDh4jLt4NVcWgyGELwXiS8T+bbhn7aRjS5ZgBbA:4GWntWyD1LiS8lS5ZItype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1783494157380F73ED925C6F43D5A8390A43AAD3215A5AC07F6D26F2A73B1D97E221323sha3_384: 02a6d756f42fcb1eb2bfaebf09fc88e9fcf5d7148945e3ea3cd6567510c36e6fd163f683d72389b3721563b85aed86a4ep_bytes: 685c414000e8f0ffffff000000000000timestamp: 2012-01-18 19:54:22

Version Info:

Translation: 0x0409 0x04b0ProductName: zyANYZBJFileVersion: 1.00ProductVersion: 1.00InternalName: UvaabbvQOriginalFilename: UvaabbvQ.exe

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

Bkav W32.AIDetectMalware
Elastic malicious (high confidence)
ClamAV Win.Trojan.Vobfus-30
CAT-QuickHeal Trojan.Beebone.D
Skyhigh BehavesLike.Win32.VBObfus.dm
ALYac Gen:Variant.Chinky.7
Cylance unsafe
Sangfor Suspicious.Win32.Save.vb
K7AntiVirus EmailWorm ( 0054d10f1 )
BitDefender Gen:Variant.Chinky.7
K7GW EmailWorm ( 0054d10f1 )
Cybereason malicious.00ea64
Arcabit Trojan.Chinky.7
Baidu Win32.Worm.Pronny.d
VirIT Trojan.Win32.Zyx.HJ
Symantec W32.Changeup
ESET-NOD32 Win32/Pronny.AC
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Worm.Win32.Vobfus.dezg
NANO-Antivirus Trojan.Win32.Diple.covlai
MicroWorld-eScan Gen:Variant.Chinky.7
Avast Win32:AutoRun-COJ [Trj]
Tencent Worm.Win32.Vobfus.kad
Emsisoft Gen:Variant.Chinky.7 (B)
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
FireEye Generic.mg.af178840f3925d42
Sophos W32/SillyFDC-GX
SentinelOne Static AI – Malicious PE
Jiangmin Worm.Vobfus.kwzs
Google Detected
Avira TR/VB.Agent.auoa
MAX malware (ai score=85)
Antiy-AVL Worm/Win32.WBNA.gen
Xcitium TrojWare.Win32.Diple.EMIB@4pez3w
Microsoft Worm:Win32/Vobfus!pz
ViRobot Trojan.Win32.A.Diple.233472.K
ZoneAlarm Worm.Win32.Vobfus.dezg
GData Gen:Variant.Chinky.7
Varist W32/VBcrypt.T.gen!Eldorado
AhnLab-V3 Trojan/Win32.Menti.R20177
Acronis suspicious
McAfee VBObfus.cm
TACHYON Worm/W32.Vobfus.233472.C
VBA32 BScope.Trojan.Diple
Malwarebytes Pronny.Worm.Spreader.DDS
Panda W32/Vobfus.GEV.worm
TrendMicro-HouseCall WORM_VOBFUS.SMAB
Rising Worm.VobfusEx!1.99DB (CLASSIC)
Yandex Trojan.GenAsa!SbK12zg9s+k
Ikarus Worm.Win32.Vobfus
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Jorik_Vobfus.FELF!tr
BitDefenderTheta Gen:NN.ZevbaF.36744.om0@a4L7Kyoi
AVG Win32:AutoRun-COJ [Trj]
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_100% (W)

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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