Categories: Worm

About “Worm:Win32/Vobfus.BJ” infection

The Worm:Win32/Vobfus.BJ 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 Worm:Win32/Vobfus.BJ virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • 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)
  • Anomalous binary characteristics
  • Attempts to modify Explorer settings to prevent hidden files from being displayed

How to determine Worm:Win32/Vobfus.BJ?


File Info:

name: 24C9D533635773A34D66.mlwpath: /opt/CAPEv2/storage/binaries/323730c0af7f44dfeb54eb2565ec101e51aaeddd661e284663ad78e88e519bb1crc32: 5A92F222md5: 24c9d533635773a34d660f3ca9f2f64bsha1: 48b11559712d1bdba1ce6877f574ee8c3c77f36asha256: 323730c0af7f44dfeb54eb2565ec101e51aaeddd661e284663ad78e88e519bb1sha512: 8a4afe90a0b515910a891387a02f4c9e1ec39bf2325474ed9c3daac7f408f86d3ff6f462ae0a606a6f0c85ce380c75e20d43fa6be22bcae16bb98a143d462056ssdeep: 3072:WEqNVnha1paHDLo8xxwhlT2sqcDNvYgWsGKc64gJ3o/pDjOTVwI2n43sj:FOVE14LpMlTxDhWUR5GZjOTQKstype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1ED143055BB80ADBBE0B18EF5AB85435340906C3855C5B233B3C1971A2679CE7C2727EBsha3_384: d2480d22da42e2a48a19cd2ba802c9faed082744e60475d8258daab0fbe9d537cc4ef472e26795048cfe7b5fa1b7900cep_bytes: 68743c4000e8eeffffff000000000000timestamp: 2001-06-23 10:32:40

Version Info:

Translation: 0x0409 0x04b0ProductName: bdiYZszaNnmpsCVjRiOFileVersion: 7.74ProductVersion: 7.74InternalName: kNEABXwZDcJhOriginalFilename: kNEABXwZDcJh.exe

Worm:Win32/Vobfus.BJ also known as:

Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Trojan.Heur.ZGY.5
ClamAV Win.Trojan.Changeup-6169544-0
FireEye Generic.mg.24c9d533635773a3
CAT-QuickHeal Worm.VobfusVMF.S20620635
McAfee VBObfus.g
Cylance Unsafe
VIPRE Gen:Trojan.Heur.ZGY.5
Sangfor Suspicious.Win32.Save.vb
K7AntiVirus NetWorm ( 700000151 )
K7GW NetWorm ( 700000151 )
CrowdStrike win/malicious_confidence_100% (W)
Baidu Win32.Worm.VB.tn
VirIT Trojan.Win32.Agent.BPXU
Cyren W32/VBTrojan.Vobfus.2!Generic
Symantec W32.Changeup
ESET-NOD32 Win32/AutoRun.VB.ABN
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Worm.Win32.WBNA.a
BitDefender Gen:Trojan.Heur.ZGY.5
NANO-Antivirus Trojan.Win32.WBNA.covkcn
Avast Win32:VB-RPN [Trj]
Ad-Aware Gen:Trojan.Heur.ZGY.5
Sophos ML/PE-A + Mal/VBCheMan-A
DrWeb Trojan.VbCrypt.60
TrendMicro WORM_VOBFUS.SMHC
McAfee-GW-Edition BehavesLike.Win32.PWSZbot.dm
Emsisoft Gen:Trojan.Heur.ZGY.5 (B)
Ikarus Worm.SuspectCRC
GData Win32.Worm.Vobfus.41ZZY1
Avira WORM/VB.Agent.psc
Antiy-AVL Trojan/Generic.ASBOL.5
ViRobot Worm.Win32.A.WBNA.290816
ZoneAlarm Worm.Win32.WBNA.ipa
Microsoft Worm:Win32/Vobfus.BJ
Google Detected
AhnLab-V3 Trojan/Win32.Aresclass.R77867
Acronis suspicious
VBA32 Trojan.VBRA.019
ALYac Gen:Trojan.Heur.ZGY.5
MAX malware (ai score=89)
Malwarebytes Malware.AI.1123537092
TrendMicro-HouseCall WORM_VOBFUS.SMHC
Rising Worm.Autorun!8.50 (TFE:3:j0l8k3oSbaD)
Yandex Trojan.GenAsa!2/9SHf91NAw
SentinelOne Static AI – Malicious PE
MaxSecure Worm.W32.WBNA.a
Fortinet W32/CoinMiner.F
BitDefenderTheta AI:Packer.254A2CEF15
AVG Win32:VB-RPN [Trj]
Cybereason malicious.363577
Panda Generic Malware

How to remove Worm:Win32/Vobfus.BJ?

  • 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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Paul Valéry

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