Categories: Malware

Win32:VB-YOK [Trj] removal

The Win32:VB-YOK [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:VB-YOK [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
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid
  • Behavioural detection: Injection (inter-process)
  • CAPE detected the embedded pe malware family
  • 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:VB-YOK [Trj]?


File Info:

name: 8A3304F801A41708ADCC.mlwpath: /opt/CAPEv2/storage/binaries/e52c246c82bab5e42e5a7c0734d04894e31dde844e8f06d361f054c1ae755cb3crc32: 5CEFF1A1md5: 8a3304f801a41708adcc35d43266bf44sha1: 7f9af78a1a89058feeed2e82b6957d083f66a49fsha256: e52c246c82bab5e42e5a7c0734d04894e31dde844e8f06d361f054c1ae755cb3sha512: e7c68612f9ade8dbe45c7907a2fbeae33bb71cd8a31f629998c4fbd725d217cf927cf3257f8f2bf97be96f205e2c6664c0b650f947094190778b61de95d11d9fssdeep: 3072:LGzsrBqoe5g+GwJs8K9YUoIrJaRuSZ/JlQPj/PYv2wM0B2vmkHgHAGFAhl4oQZik:LGwrXP9YErMRuSZ/JlQLHYv2PvzGAMAwtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T115F3831636C0F23EC815CAF43D6E4790A479AD3625D2A813F6C26F26B6B1DA7D230717sha3_384: a6838b05efe7abdda42c8f00c0577707f7e6879b0076006ed31cfb6546d2082f5eef7b1861eddf8826f631aaf8542df6ep_bytes: 6810404000e8f0ffffff000000000000timestamp: 2007-08-14 09:20:42

Version Info:

Translation: 0x0409 0x04b0ProductName: BUWGdoZyKNBFileVersion: 1.00ProductVersion: 1.00InternalName: ZyFnyGWVOdxhFvOriginalFilename: ZyFnyGWVOdxhFv.exe

Win32:VB-YOK [Trj] also known as:

Bkav W32.AIDetectMalware
AVG Win32:VB-YOK [Trj]
tehtris Generic.Malware
DrWeb Trojan.VbCrypt.60
MicroWorld-eScan Gen:Variant.Barys.2424
FireEye Generic.mg.8a3304f801a41708
CAT-QuickHeal Trojan.Vobfus.gen
Skyhigh BehavesLike.Win32.Generic.cm
McAfee VBObfus.bc
Malwarebytes Generic.Malware.AI.DDS
Sangfor Suspicious.Win32.Save.vb
CrowdStrike win/malicious_confidence_100% (W)
K7GW EmailWorm ( 0054d10f1 )
K7AntiVirus EmailWorm ( 0054d10f1 )
BitDefenderTheta AI:Packer.4213A9201F
VirIT Worm.Win32.Generic.AZUA
Symantec W32.Changeup!gen15
Elastic malicious (high confidence)
ESET-NOD32 Win32/AutoRun.VB.AMD
Cynet Malicious (score: 100)
APEX Malicious
ClamAV Win.Trojan.VB-1491
Kaspersky Worm.Win32.Vobfus.efex
BitDefender Gen:Variant.Barys.2424
NANO-Antivirus Trojan.Win32.Diple.covkye
SUPERAntiSpyware Trojan.Agent/Gen-Vobfus
Avast Win32:VB-YOK [Trj]
TACHYON Worm/W32.Vobfus.163840.B
Sophos Mal/VB-UY
F-Secure Trojan.TR/Spy.Agent.163847
Baidu Win32.Trojan.Inject.n
VIPRE Gen:Variant.Barys.2424
TrendMicro WORM_VOBFUS.SMAC
Trapmine malicious.high.ml.score
Emsisoft Gen:Variant.Barys.2424 (B)
Ikarus Worm.Win32.WBNA
Varist W32/Vobfus.Z.gen!Eldorado
Avira TR/Spy.Agent.163847
Antiy-AVL Virus/Win64.Expiro.rsrc
Kingsoft malware.kb.a.1000
Microsoft Worm:Win32/Vobfus!pz
Xcitium TrojWare.Win32.Diple.EMIB@4pez3w
Arcabit Trojan.Barys.D978
ZoneAlarm Worm.Win32.Vobfus.efex
GData Win32.Worm.Vobfus.4JUW3S
Google Detected
AhnLab-V3 Trojan/Win32.Diple.R63860
Acronis suspicious
VBA32 BScope.Trojan.VB.Diple.01583
ALYac Gen:Variant.Barys.2424
MAX malware (ai score=82)
Cylance unsafe
Panda Trj/Genetic.gen
TrendMicro-HouseCall WORM_VOBFUS.SMAC
Rising Worm.Vobfus!1.99C7 (CLASSIC)
Yandex Trojan.GenAsa!3+0rkNP74OI
SentinelOne Static AI – Malicious PE
Fortinet W32/CoinMiner.F
Cybereason malicious.801a41
DeepInstinct MALICIOUS

How to remove Win32:VB-YOK [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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