VirTool:Win32/Vtub.JS

What is VirTool:Win32/Vtub.JS infection?

In this short article you will discover regarding the interpretation of VirTool:Win32/Vtub.JS and its unfavorable impact on your computer system. Such ransomware are a form of malware that is elaborated by on the internet frauds to require paying the ransom by a victim.

In the majority of the situations, VirTool:Win32/Vtub.JS ransomware will instruct its targets to launch funds transfer for the purpose of neutralizing the modifications that the Trojan infection has actually introduced to the victim’s device.

VirTool:Win32/Vtub.JS Summary

These alterations can be as follows:

  • 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • A process created a hidden window;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • Sniffs keystrokes;
  • Attempts to stop active services;
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Operates on local firewall’s policies and settings;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the sufferer’s hard disk drive — so the sufferer can no more utilize the information;
  • Preventing normal access 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.

VirTool:Win32/Vtub.JS

The most common channels where VirTool:Win32/Vtub.JS Trojans are injected are:

  • By ways of phishing e-mails;
  • As an effect of user winding up on a source that hosts a destructive software;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the data on the sufferer’s computer or stop the gadget from operating in a correct way – while also placing a ransom money note that points out the need for the victims to impact the repayment for the objective of decrypting the papers or bring back the file system back to the initial problem. In many instances, the ransom note will certainly turn up when the client restarts the PC after the system has actually currently been damaged.

VirTool:Win32/Vtub.JS distribution channels.

In different edges of the world, VirTool:Win32/Vtub.JS grows by jumps as well as bounds. Nonetheless, the ransom money notes and tricks of extorting the ransom amount may differ relying on certain local (regional) settings. The ransom money notes as well as techniques of extorting the ransom quantity may vary depending on particular local (regional) settings.

Ransomware injection

For example:

    Faulty notifies about unlicensed software application.

    In specific locations, the Trojans often wrongfully report having actually identified some unlicensed applications allowed on the victim’s device. The alert after that demands the customer to pay the ransom.

    Faulty statements regarding prohibited content.

    In countries where software piracy is less preferred, this method is not as efficient for the cyber scams. Conversely, the VirTool:Win32/Vtub.JS popup alert may wrongly assert to be originating from a law enforcement establishment and also will report having located child porn or other prohibited data on the device.

    VirTool:Win32/Vtub.JS popup alert may falsely assert to be deriving from a regulation enforcement organization as well as will certainly report having situated youngster pornography or various other prohibited information on the device. The alert will in a similar way contain a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: 56C12D08md5: a1fed9ba0a58876196da5c0f75b9e2eename: A1FED9BA0A58876196DA5C0F75B9E2EE.mlwsha1: 3c8c5f41880baefe9950518064aeb518e0078312sha256: 45327b1917a102ffc8f62fb7a2b4f1159d5ff7e821587d6626d75705980fc909sha512: 642b3927b6d304348a5b1135c095948532055e4571f7e05f523be3fc20054ff75271c42225da3e5ac312cffad4dbeecb18b5a6759e1a8b15167f9db75742f9d4ssdeep: 24576:ILcq+SRlpe6U7YES8LSj3BIHuH2MUudw70E3Ibn:dSXp/LES862tnud/E3type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

VirTool:Win32/Vtub.JS also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.PWS.LDPinch.11622
Cynet Malicious (score: 100)
ALYac Gen:Trojan.Heur.aHW@IHGlkTgi
Cylance Unsafe
Zillya Trojan.Blocker.Win32.34268
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/Blocker.e9a41aea
K7GW Trojan ( 0055e3df1 )
K7AntiVirus Trojan ( 0055e3df1 )
Cyren W32/Worm.BACN-0423
Symantec W32.Spybot.Worm
ESET-NOD32 a variant of Win32/TrojanDropper.Surldoe.B
APEX Malicious
Avast Win32:Crypt-FSK [Trj]
Kaspersky Trojan-Ransom.Win32.Blocker.iift
BitDefender Gen:Trojan.Heur.aHW@IHGlkTgi
NANO-Antivirus Trojan.Win32.Diztakun.dsyzsq
MicroWorld-eScan Gen:Trojan.Heur.aHW@IHGlkTgi
Ad-Aware Gen:Trojan.Heur.aHW@IHGlkTgi
Sophos Mal/Generic-S
Comodo NetWorm.Win32.Kolab.~F@f80py
BitDefenderTheta AI:Packer.27C6CDB51C
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.PWSZbot.tc
FireEye Generic.mg.a1fed9ba0a588761
Emsisoft Gen:Trojan.Heur.aHW@IHGlkTgi (B)
SentinelOne Static AI – Suspicious PE
Jiangmin TrojanDropper.Wlord.ax
Avira TR/Crypt.XDR.Gen
eGambit Generic.Malware
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft VirTool:Win32/Vtub.JS
AegisLab Trojan.Win32.Rbot.lBP9
GData Gen:Trojan.Heur.aHW@IHGlkTgi
AhnLab-V3 Trojan/Win32.Agent.C1444717
Acronis suspicious
McAfee GenericRXJH-AX!A1FED9BA0A58
MAX malware (ai score=99)
VBA32 Malware-Cryptor.VB.gen.1
Malwarebytes Malware.AI.721116010
Panda Trj/CI.A
Rising [email protected] (RDML:iLUEbaMGCKLYFQHLSOG5cw)
Yandex Trojan.GenAsa!gs4h0fYpeDA
Ikarus Virus.Win32.DelfInject
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Generic.AC.1F068E!tr
AVG Win32:Crypt-FSK [Trj]
Paloalto generic.ml

How to remove VirTool:Win32/Vtub.JS virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

Run the setup file.

Run Setup.exe
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 Scanning

Click on “Clean Now”.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

Full version of GridinSoft

If the guide doesn’t help you to remove VirTool:Win32/Vtub.JS you can always ask me in the comments for getting help.

References

    About the author

    Robert Bailey

    Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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