Trojan:Win32/Vundo.MF

What is Trojan:Win32/Vundo.MF infection?

In this post you will certainly locate concerning the meaning of Trojan:Win32/Vundo.MF and its adverse influence on your computer. Such ransomware are a kind of malware that is specified by on the internet fraudulences to demand paying the ransom money by a victim.

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In the majority of the situations, Trojan:Win32/Vundo.MF infection will instruct its sufferers to launch funds move for the objective of counteracting the amendments that the Trojan infection has presented to the victim’s gadget.

Trojan:Win32/Vundo.MF Summary

These alterations 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.
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • A process attempted to delay the analysis task.;
  • 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.
  • Unconventionial language used in binary resources: Russian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • 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
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a slightly modified copy of itself;
  • Ciphering the papers located on the victim’s disk drive — so the target can no longer utilize the information;
  • Preventing routine accessibility 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.MF

One of the most regular channels where Trojan:Win32/Vundo.MF are injected are:

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

As quickly as the Trojan is successfully injected, it will either cipher the information on the target’s computer or protect against the device from working in a correct way – while likewise putting a ransom note that points out the requirement for the targets to effect the repayment for the purpose of decrypting the files or recovering the file system back to the first condition. In the majority of instances, the ransom money note will turn up when the client restarts the COMPUTER after the system has already been harmed.

Trojan:Win32/Vundo.MF distribution networks.

In numerous edges of the globe, Trojan:Win32/Vundo.MF grows by leaps and bounds. Nevertheless, the ransom notes and methods of obtaining the ransom money quantity might vary relying on certain regional (regional) settings. The ransom money notes and also tricks of extorting the ransom quantity might vary depending on certain neighborhood (regional) settings.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software.

    In certain locations, the Trojans frequently wrongfully report having found some unlicensed applications allowed on the sufferer’s tool. The alert after that demands the customer to pay the ransom money.

    Faulty declarations about unlawful material.

    In nations where software application piracy is much less prominent, this technique is not as effective for the cyber frauds. Additionally, the Trojan:Win32/Vundo.MF popup alert may falsely claim to be deriving from a law enforcement institution as well as will certainly report having located kid porn or various other unlawful information on the device.

    Trojan:Win32/Vundo.MF popup alert may wrongly claim to be deriving from a legislation enforcement organization and will certainly report having located kid pornography or various other unlawful data on the device. The alert will likewise contain a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: C6B08D88
md5: b9c888ef064463bbdbb6fb5b1ca2add3
name: B9C888EF064463BBDBB6FB5B1CA2ADD3.mlw
sha1: 5973ff5d75f92316c0a8054e3f208015ae92e793
sha256: 900f67018c4c83fa674b4bcae46210cc4338e26f7f50b88897f60b9f68753b97
sha512: 7f470000aeaed67c83db8f05342b32c37d39015108ad88ccc0f9823f5a624586afc8c485d6f866abcb6da7b1eba64efb69f017ed48373c61b555185ffb4f77ea
ssdeep: 1536:nG6m4vDINxnTVzpf9vktX/nSrhpi6Knouy8J:nA4vDmZZ5wXPSrhQ6SoutJ
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Trojan:Win32/Vundo.MF also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
Elastic malicious (high confidence)
DrWeb Trojan.Click1.29386
Cynet Malicious (score: 100)
CAT-QuickHeal TrojanRansom.Blocker
ALYac Gen:Variant.Kazy.7355
Cylance Unsafe
Zillya Dropper.Drooptroop.Win32.4383
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Blocker.00e8cac2
K7GW Trojan ( f1000f011 )
K7AntiVirus Trojan ( f1000f011 )
Symantec Downloader.Lofog!gen4
ESET-NOD32 a variant of Win32/Kryptik.JVZ
APEX Malicious
TotalDefense Win32/PornoAsset.A!generic
Avast FileRepMalware
ClamAV Win.Trojan.Drooptroop-280
Kaspersky Trojan-Ransom.Win32.Blocker.izzm
BitDefender Gen:Variant.Kazy.7355
NANO-Antivirus Trojan.Win32.Blocker.iauxsw
MicroWorld-eScan Gen:Variant.Kazy.7355
Tencent Malware.Win32.Gencirc.10c47a96
Ad-Aware Gen:Variant.Kazy.7355
Sophos ML/PE-A + Mal/Zbot-EZ
Comodo TrojWare.Win32.Trojan.XPACK.Gen@2ho5ur
F-Secure Trojan.TR/Dropper.Gen
BitDefenderTheta Gen:NN.ZexaF.34608.emGfaiM0almc
VIPRE VirTool.Win32.Obfuscator.da!j (v)
TrendMicro TROJ_SPYEYE.SMEP
McAfee-GW-Edition BehavesLike.Win32.Trojan.kc
FireEye Generic.mg.b9c888ef064463bb
Emsisoft Gen:Variant.Kazy.7355 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin TrojanDropper.Drooptroop.dbc
Avira TR/Dropper.Gen
eGambit Generic.Malware
Microsoft Trojan:Win32/Vundo.MF
Arcabit Trojan.Kazy.D1CBB
AegisLab Trojan.Win32.Generic.4!c
ZoneAlarm Trojan-Ransom.Win32.Blocker.izzm
GData Gen:Variant.Kazy.7355
AhnLab-V3 Backdoor/Win32.Shiz.R2773
McAfee Artemis!B9C888EF0644
MAX malware (ai score=85)
VBA32 Trojan.SB.01742
Malwarebytes Malware.Heuristic.1003
Panda Trj/GdSda.A
TrendMicro-HouseCall TROJ_SPYEYE.SMEP
Rising Trojan.Ymacco!8.11BE1 (CLOUD)
Yandex Trojan.DR.Drooptroop!+u5aTCyAWII
Ikarus Backdoor.Win32.Shiz
Fortinet W32/Bamital.FA!tr
AVG FileRepMalware
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Blocker.HgIASOcA

How to remove Trojan:Win32/Vundo.MF ransomware?

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

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 Trojan:Win32/Vundo.MF 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 Trojan:Win32/Vundo.MF you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/products/

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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