Categories: Malware

Troj/VB-FZU removal guide

The Troj/VB-FZU 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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Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
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What Troj/VB-FZU 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)
  • Attempts to disable Windows Auto Updates
  • 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 Troj/VB-FZU?


File Info:

name: 4B91BE0D889909699D85.mlwpath: /opt/CAPEv2/storage/binaries/73a90148c54d96710cf0bfa64edef0ee5e01647e399deadd199ef87420abf368crc32: 7CD3AEBEmd5: 4b91be0d889909699d85e3db50931fb6sha1: 26c1d970736b7a5c7806970ac80ca26d28d30ee0sha256: 73a90148c54d96710cf0bfa64edef0ee5e01647e399deadd199ef87420abf368sha512: dbeb964ffb55ff24ab3c24c8fd2258af4e0646fe69dc16ac201d5bded9e78ee4166b5a537e0594105ce41b5b13b4a9a6bbf01b1d197e1e00b664825b26652de7ssdeep: 6144:H4RnI56piIqQUuDnr3G5q/MEuolGjS7ZGll197SDfib12GaNK1mk9xqSj+iQVlDG:H6I56piIqQUuDnr3G0/iolGjS7ZGll13type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1D17442143740F639E01685F53F0487B88539A93505E0AC07FB81BBA266B5EBFD6B6723sha3_384: e6790e91aec7d2ffb87f31176820e7314d5933fa43911e1e4da5d14b173ef437955c64d4e1a1b8affaa20b3472602b76ep_bytes: 68204e4000e8f0ffffff000000000000timestamp: 2012-07-15 07:04:13

Version Info:

Translation: 0x0409 0x04b0Comments: speravi verdettoCompanyName: speravi verdettoFileDescription: speravi verdettoLegalCopyright: speravi verdettoLegalTrademarks: speravi verdettoProductName: speravi verdettoFileVersion: 5.87ProductVersion: 5.87InternalName: sparrowbillOriginalFilename: sparrowbill.exe

Troj/VB-FZU also known as:

Bkav W32.AIDetectMalware
MicroWorld-eScan Gen:Variant.VBKrypt.23
ClamAV Win.Trojan.Changeup-6169544-0
FireEye Generic.mg.4b91be0d88990969
McAfee GenDownloader.pr
Malwarebytes Generic.Malware.AI.DDS
Sangfor Trojan.Win32.Save.a
K7AntiVirus EmailWorm ( 0054d10f1 )
K7GW EmailWorm ( 0054d10f1 )
CrowdStrike win/malicious_confidence_100% (D)
Baidu Win32.Worm.Pronny.d
VirIT Trojan.Win32.Generic.AJQX
Cyren W32/VBInject.BG.gen!Eldorado
Symantec W32.Changeup
Elastic malicious (high confidence)
ESET-NOD32 Win32/Pronny.BL
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Worm.Win32.Vobfus.erev
BitDefender Gen:Variant.VBKrypt.23
NANO-Antivirus Trojan.Win32.WBNA.covlqh
SUPERAntiSpyware Trojan.Agent/Gen-Vobfus
Avast Win32:VB-ADSU [Trj]
Tencent Trojan.Win32.FakeFolder.abh
TACHYON Trojan/W32.VB-Diple.348160.B
Emsisoft Gen:Variant.VBKrypt.23 (B)
F-Secure Trojan.TR/Dropper.Gen
DrWeb Trojan.VbCrypt.60
VIPRE Gen:Variant.VBKrypt.23
TrendMicro WORM_VOBFUS.SM01
McAfee-GW-Edition BehavesLike.Win32.VBObfus.fm
Trapmine malicious.moderate.ml.score
Sophos Troj/VB-FZU
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Generic.hnlax
Webroot W32.Trojan.Gen
Avira TR/Dropper.Gen
Antiy-AVL Worm/Win32.WBNA.gen
Microsoft Trojan:Win32/Meredrop
Xcitium Worm.Win32.Pronny.BL@4pn6lp
Arcabit Trojan.VBKrypt.23
ZoneAlarm Worm.Win32.Vobfus.erev
GData Gen:Variant.VBKrypt.23
Google Detected
AhnLab-V3 Worm/Win32.VBNA.R30730
BitDefenderTheta AI:Packer.C9C6BD9920
ALYac Gen:Variant.VBKrypt.23
MAX malware (ai score=88)
VBA32 BScope.Trojan.VBKrypt
Cylance unsafe
Panda Trj/Genetic.gen
TrendMicro-HouseCall WORM_VOBFUS.SM01
Rising Worm.VobfusEx!1.99E2 (CLASSIC)
Yandex Trojan.GenAsa!DSiKajy8TVg
Ikarus Worm.Win32.Vobfus
MaxSecure Trojan.Malware.10159979.susgen
Fortinet W32/Diple.FKNL!tr
AVG Win32:VB-ADSU [Trj]
Cybereason malicious.d88990
DeepInstinct MALICIOUS

How to remove Troj/VB-FZU?

  • 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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