What is Win32/VB.OTF infection?

In this post you will certainly discover about the definition of Win32/VB.OTF and also its adverse influence on your computer system. Such ransomware are a form of malware that is specified by online frauds to require paying the ransom money by a target.

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Most of the instances, Win32/VB.OTF virus will instruct its sufferers to initiate funds move for the objective of reducing the effects of the changes that the Trojan infection has actually presented to the target’s tool.

Win32/VB.OTF Summary

These adjustments can be as complies with:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Uses Windows utilities for basic functionality;
  • Attempts to modify desktop wallpaper;
  • Attempts to delete volume shadow copies;
  • Modifies boot configuration settings;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the records found on the sufferer’s hard disk — so the target can no longer make use of the data;
  • Preventing routine accessibility to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


One of the most normal channels through which Win32/VB.OTF Trojans are infused are:

  • By means of phishing emails;
  • As an effect of customer ending up on a resource that holds a malicious software;

As soon as the Trojan is effectively infused, it will certainly either cipher the data on the sufferer’s computer or stop the gadget from functioning in a correct fashion – while additionally placing a ransom note that states the need for the sufferers to effect the settlement for the purpose of decrypting the documents or recovering the data system back to the preliminary problem. In a lot of instances, the ransom note will certainly come up when the client restarts the PC after the system has already been harmed.

Win32/VB.OTF circulation networks.

In different edges of the world, Win32/VB.OTF expands by jumps as well as bounds. Nonetheless, the ransom money notes and methods of extorting the ransom quantity may differ depending on certain local (regional) settings. The ransom money notes and tricks of obtaining the ransom money quantity might vary depending on particular local (local) settings.

Ransomware injection

For instance:

    Faulty informs about unlicensed software application.

    In certain locations, the Trojans often wrongfully report having actually found some unlicensed applications enabled on the victim’s gadget. The sharp after that demands the individual to pay the ransom.

    Faulty declarations about prohibited content.

    In countries where software piracy is less prominent, this method is not as efficient for the cyber frauds. Additionally, the Win32/VB.OTF popup alert may incorrectly declare to be originating from a law enforcement organization as well as will certainly report having located child porn or other unlawful data on the tool.

    Win32/VB.OTF popup alert may incorrectly claim to be obtaining from a regulation enforcement organization and also will certainly report having situated child porn or other illegal data on the tool. The alert will in a similar way include a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: CB5EF0DF
md5: 18cea513a294b90bcc4faac31046313e
name: 18CEA513A294B90BCC4FAAC31046313E.mlw
sha1: a0e15d0fd73f91599987d3d07924b030e2014c0c
sha256: 89c14437758c0c45bed188e3d7c2a8efd62414eb2d5eb261212ac66b9e208ee7
sha512: f625139445dcd2fb1e71dc27f2fc7c31e785fac0e8e435f6ca6b00bcf3935eb50ae49ac455166f7fb5c66a443a9a0202f02eef8fc4311388090614f0395a2d1f
ssdeep: 1536:KjC23CQp2GaVQylJjlNq4gVnseSfKNgtboy0lA:KF3Cs2G2QyJhN5gVnHSfKNgtboyb
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0409 0x04b0
InternalName: Install10
FileVersion: 1.00
ProductVersion: 1.00
OriginalFilename: Install10.exe

Win32/VB.OTF also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus P2PWorm ( 0052362d1 )
ALYac Gen:Variant.Graftor.463941
Cylance Unsafe
Zillya Trojan.Wanna.Win32.849
Alibaba Ransom:Win32/Wanna.f2b3d8d1
K7GW P2PWorm ( 0052362d1 )
Cybereason malicious.3a294b
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/VB.OTF
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Wanna.amfs
BitDefender Gen:Variant.Graftor.463941
NANO-Antivirus Trojan.Win32.Wanna.exvdpf
MicroWorld-eScan Gen:Variant.Graftor.463941
Tencent Win32.Trojan.Ransomware.Auto
Ad-Aware Gen:Variant.Graftor.463941
Sophos Mal/Generic-R + Mal/VB-GI
BitDefenderTheta AI:Packer.6F015CCE1F
VIPRE Trojan.Win32.Generic!BT
Emsisoft Gen:Variant.Graftor.463941 (B)
Avira HEUR/AGEN.1135395
Microsoft Ransom:Win32/Wadhrama.B
AegisLab Trojan.Win32.Wanna.u!c
ZoneAlarm Trojan-Ransom.Win32.Wanna.amfs
GData Gen:Variant.Graftor.463941
McAfee Artemis!18CEA513A294
MAX malware (ai score=85)
VBA32 BScope.Trojan.Dynamer
Malwarebytes Ransom.FileCryptor
Panda Trj/GdSda.A
Rising Ransom.Wanna!8.E7B2 (CLOUD)
Ikarus Worm.Win32.VB
Fortinet W32/VB.GI!worm
AVG Win32:Malware-gen
Qihoo-360 Win32/Ransom.Wadhrama.HgIASRoA

How to remove Win32/VB.OTF virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Win32/VB.OTF files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

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If the guide doesn’t help you to remove Win32/VB.OTF you can always ask me in the comments for getting help.

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About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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