Trojan:Win32/Vundo.QB

What is Trojan:Win32/Vundo.QB infection?

In this post you will certainly locate regarding the meaning of Trojan:Win32/Vundo.QB as well as its unfavorable influence on your computer system. Such ransomware are a form of malware that is specified by on-line frauds to demand paying the ransom by a target.

Most of the situations, Trojan:Win32/Vundo.QB ransomware will certainly instruct its victims to initiate funds move for the objective of neutralizing the modifications that the Trojan infection has presented to the target’s gadget.

Trojan:Win32/Vundo.QB Summary

These adjustments 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.
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • Mimics the system’s user agent string for its own requests;
  • Expresses interest in specific running processes;
  • 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.

  • 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;
  • Detects Sandboxie through the presence of a library;
  • Detects SunBelt Sandbox through the presence of a library;
  • Enumerates services, possibly for anti-virtualization;
  • Detects the presence of Wine emulator via function name;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • 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
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Checks the version of Bios, possibly for anti-virtualization;
  • Creates a copy of itself;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the target’s hard disk drive — so the victim can no more utilize the data;
  • Preventing normal access to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Trojan:Win32/Vundo.QB

One of the most typical channels whereby Trojan:Win32/Vundo.QB Ransomware Trojans are infused are:

  • By means of phishing e-mails;
  • As a repercussion of individual ending up on a source that hosts a harmful software program;

As quickly as the Trojan is successfully infused, it will certainly either cipher the data on the victim’s computer or avoid the gadget from operating in a proper fashion – while likewise positioning a ransom note that mentions the demand for the victims to impact the repayment for the objective of decrypting the files or bring back the data system back to the first condition. In the majority of circumstances, the ransom money note will come up when the customer reboots the PC after the system has actually currently been harmed.

Trojan:Win32/Vundo.QB distribution networks.

In numerous edges of the world, Trojan:Win32/Vundo.QB expands by jumps and also bounds. Nevertheless, the ransom money notes as well as methods of obtaining the ransom money amount might vary depending upon specific neighborhood (local) settings. The ransom notes as well as techniques of extorting the ransom money quantity may vary depending on particular regional (regional) settings.

Ransomware injection

For example:

    Faulty alerts about unlicensed software application.

    In certain locations, the Trojans usually wrongfully report having actually detected some unlicensed applications enabled on the victim’s device. The sharp after that requires the user to pay the ransom money.

    Faulty declarations concerning prohibited web content.

    In nations where software application piracy is less preferred, this method is not as effective for the cyber scams. Alternatively, the Trojan:Win32/Vundo.QB popup alert may incorrectly assert to be originating from a law enforcement organization and also will certainly report having located child porn or other unlawful information on the gadget.

    Trojan:Win32/Vundo.QB popup alert may wrongly claim to be obtaining from a regulation enforcement establishment and also will report having located child porn or other unlawful data on the device. The alert will similarly include a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 718C4737md5: c59f6c6e6f90d10c5e99b2cf936f5a86name: C59F6C6E6F90D10C5E99B2CF936F5A86.mlwsha1: ca050ab510db68a37965a4410dc358c8f17769casha256: 89ec25575de9917467fd6dd340b15a0f9d7466682db855da6f432b20f2069f9dsha512: af13fb49c873acca5c582f56376bca1b1c857365cf9e9e1ca4b52e1d601444573cf6b1261b05e86506b833f3662d6bb020acbe3d83b6584bcd039f4069564e5dssdeep: 6144:73u/v5E0QPGQkPGLzauyDr2lj+74RTURUXLDQpwswN3lVUpWmjehRKHxkle+hCoc:73u/v5Z8GQkPezap574RTkUXAKsiVAjttype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Vundo.QB also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 00422d011 )
DrWeb Trojan.WinSpy.1014
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.Cerber.1
Cylance Unsafe
Zillya Trojan.Pirminay.Win32.2695
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_80% (D)
Alibaba Trojan:Win32/Starter.ali2000005
K7GW Trojan ( 00422d011 )
Cybereason malicious.e6f90d
Cyren W32/Virtumonde.DR.gen!Eldorado
ESET-NOD32 a variant of Win32/Ponmocup.GA
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Trojan.Agent-596125
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.Ransom.Cerber.1
NANO-Antivirus Trojan.Win32.Pirminay.coonhd
SUPERAntiSpyware Trojan.Agent/Gen-Ponmocup
MicroWorld-eScan Trojan.Ransom.Cerber.1
Tencent Malware.Win32.Gencirc.10bb32f4
Ad-Aware Trojan.Ransom.Cerber.1
Sophos ML/PE-A + Mal/Vundo-T
Comodo Malware@#25ztre2ums1og
BitDefenderTheta AI:Packer.C2E76FCE1E
VIPRE Trojan-Dropper.Win32.Vundo.r (v)
TrendMicro TROJ_VUNDO.SMX1
FireEye Generic.mg.c59f6c6e6f90d10c
Emsisoft Trojan.Ransom.Cerber.1 (B)
SentinelOne Static AI – Malicious PE
Webroot W32.Rogue.Gen
Avira TR/Dropper.Gen
eGambit Unsafe.AI_Score_98%
Antiy-AVL Trojan/Win32.Pirminay
Arcabit Trojan.Ransom.Cerber.1
AegisLab Trojan.Win32.Generic.lIKC
ZoneAlarm HEUR:Trojan.Win32.Generic
Microsoft Trojan:Win32/Vundo.QB
AhnLab-V3 Trojan/Win32.Pirminay.R53984
Acronis suspicious
McAfee GenericRXDX-IY!C59F6C6E6F90
MAX malware (ai score=100)
VBA32 BScope.Trojan.Swizzor
Malwarebytes Generic.Malware/Suspicious
Panda Trj/Genetic.gen
TrendMicro-HouseCall TROJ_VUNDO.SMX1
Rising Dropper.Generic!8.35E (CLOUD)
Ikarus Trojan-Dropper.Win32.Vundo
Fortinet W32/Ponmocup.GG!tr
AVG Win32:Trojan-gen
Paloalto generic.ml
Qihoo-360 Generic/Trojan.Ransom.c9a

How to remove Trojan:Win32/Vundo.QB 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 Trojan:Win32/Vundo.QB 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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