Categories: Malware

How to remove “Win32:VB-OLS [Trj]”?

The Win32:VB-OLS [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-OLS [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 win api malware family
  • Anomalous binary characteristics
  • Attempts to modify Explorer settings to prevent hidden files from being displayed
  • Yara rule detections observed from a process memory dump/dropped files/CAPE

How to determine Win32:VB-OLS [Trj]?


File Info:

name: 2E601C01AAFA6F384A44.mlwpath: /opt/CAPEv2/storage/binaries/a20a5584b1df0f2e51bfce8f005590efd170debf30fe990795a97d6f094328b0crc32: D74FFEF3md5: 2e601c01aafa6f384a44dad4f4fbe182sha1: 6a0b82cc3811ac6746a3382dd64f91a0e88fb6b0sha256: a20a5584b1df0f2e51bfce8f005590efd170debf30fe990795a97d6f094328b0sha512: fa032f3a1e855c8c2d7e397ef4bb68e8db8ea29259eeb9c7a0b91a65fdfedca06e3a6295384b64b4d81cd9aa414bd31ff9cde20ddb27167a859e289ae32a5a46ssdeep: 1536:vjaEigQk5l8m/mxEaHW4HKTpKsUTjlCfglf:vtigH5lj6lqpKs+saftype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T13B7351FA7A872C42DB81513DBB6BC6D6566319CDBF8F9181612CBFA94C1CC54082E263sha3_384: 4a8333862d113746d602e30f3edc3598d1f8d829caaf93cee421f8f33bff50f17ae12adb0765b46a61c3ce710213ed87ep_bytes: 6848124000e8f0ffffff000000000000timestamp: 2010-01-23 13:16:27

Version Info:

Translation: 0x0409 0x04b0CompanyName: yyYHxEDaProductName: yyYHxEDaFileVersion: 4.55ProductVersion: 4.55InternalName: yyYHxEDaOriginalFilename: yyYHxEDa.exe

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

Bkav W32.CoocunTeM.Trojan
Lionic Worm.Win32.VBNA.li8h
Elastic malicious (high confidence)
DrWeb Win32.HLLW.VBNA.based
MicroWorld-eScan Gen:Trojan.Chinky.2
FireEye Generic.mg.2e601c01aafa6f38
CAT-QuickHeal Trojan.Vobfus.gen
Skyhigh BehavesLike.Win32.VBObfus.lt
McAfee VBObfus
Cylance unsafe
Sangfor Suspicious.Win32.Save.vb
K7AntiVirus NetWorm ( 700000151 )
Alibaba Malware:Win32/km_2f55.None
K7GW NetWorm ( 700000151 )
Cybereason malicious.c3811a
BitDefenderTheta AI:Packer.04CBDD2B20
Symantec ML.Attribute.HighConfidence
tehtris Generic.Malware
ESET-NOD32 Win32/AutoRun.OJ
APEX Malicious
ClamAV Win.Dropper.Vobfus-9801948-0
Kaspersky Worm.Win32.Vobfus.exlb
BitDefender Gen:Trojan.Chinky.2
NANO-Antivirus Trojan.Win32.VB.cnwrbm
SUPERAntiSpyware Trojan.Agent/Gen-VB[Fack77N]
Avast Win32:VB-OLS [Trj]
Tencent Worm.Win32.VBna.j
TACHYON Worm/W32.Agent.77824
Sophos Mal/SillyFDC-D
Google Detected
F-Secure Trojan.TR/Chinky.B
Baidu Win32.Worm.Agent.ab
VIPRE Gen:Trojan.Chinky.2
TrendMicro WORM_VBNA.SM
Emsisoft Gen:Trojan.Chinky.2 (B)
Ikarus Virus.Win32.VB
GData Gen:Trojan.Chinky.2
Varist W32/Vobfus.D.gen!Eldorado
Avira TR/Chinky.B
Antiy-AVL Worm/Win32.Vobfus
Kingsoft malware.kb.a.1000
Xcitium Worm.Win32.AutoRunVB.OJ0@1ouygl
Arcabit Trojan.Chinky.2
ZoneAlarm Worm.Win32.Vobfus.exlb
Microsoft Worm:Win32/Vobfus.AC
Cynet Malicious (score: 100)
AhnLab-V3 Win32/Vbna4.worm.Gen
ALYac Gen:Trojan.Chinky.2
MAX malware (ai score=80)
VBA32 Trojan.VB.01076
Malwarebytes Generic.Malware.AI.DDS
Panda W32/Vobfus.CP.worm
TrendMicro-HouseCall WORM_VBNA.SM
Rising Trojan.Autorun!1.DA78 (CLASSIC)
Yandex Trojan.GenAsa!xSobOHS8J40
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/VBObfus.BDBD!tr
AVG Win32:VB-OLS [Trj]
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_100% (W)

How to remove Win32:VB-OLS [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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