Written by Robert Bailey

What is Trojan:Win32/Vundo.AX infection?

In this short article you will certainly discover concerning the interpretation of Trojan:Win32/Vundo.AX and its unfavorable influence on your computer system. Such ransomware are a kind of malware that is specified by on-line scams to demand paying the ransom money by a target.

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In the majority of the instances, Trojan:Win32/Vundo.AX virus will certainly instruct its sufferers to initiate funds transfer for the purpose of reducing the effects of the modifications that the Trojan infection has presented to the victim’s gadget.

Trojan:Win32/Vundo.AX 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.
  • 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.
  • 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.

  • 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;
  • Deletes its original binary from disk;
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files situated on the sufferer’s disk drive — so the target can no longer make use of the information;
  • Preventing routine access to the sufferer’s workstation;


The most normal channels whereby Trojan:Win32/Vundo.AX Ransomware Trojans are infused are:

  • By means of phishing emails;
  • As a consequence of user winding up on a resource that hosts a harmful software application;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the information on the victim’s computer or protect against the tool from functioning in a correct way – while likewise positioning a ransom note that mentions the requirement for the targets to impact the repayment for the purpose of decrypting the papers or recovering the documents system back to the preliminary problem. In many circumstances, the ransom note will turn up when the customer restarts the PC after the system has already been damaged.

Trojan:Win32/Vundo.AX circulation channels.

In various edges of the world, Trojan:Win32/Vundo.AX expands by leaps and bounds. Nonetheless, the ransom money notes and methods of obtaining the ransom amount may differ depending upon certain local (regional) setups. The ransom money notes as well as methods of obtaining the ransom money amount may vary depending on certain neighborhood (regional) settings.

Ransomware injection

For instance:

    Faulty signals regarding unlicensed software.

    In specific locations, the Trojans usually wrongfully report having actually discovered some unlicensed applications enabled on the sufferer’s gadget. The alert after that requires the customer to pay the ransom money.

    Faulty declarations about unlawful web content.

    In nations where software piracy is much less prominent, this approach is not as reliable for the cyber frauds. Alternatively, the Trojan:Win32/Vundo.AX popup alert may incorrectly declare to be stemming from a police organization and will report having situated youngster porn or various other prohibited data on the device.

    Trojan:Win32/Vundo.AX popup alert may falsely assert to be acquiring from a regulation enforcement organization as well as will report having located child porn or other prohibited information on the gadget. The alert will similarly include a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 7DE01C69
md5: b7385495bd46ef53a564fa40d460d78f
name: B7385495BD46EF53A564FA40D460D78F.mlw
sha1: 5ecc25f7314c1c10394f89a1b772b5798572702c
sha256: f8ef1abf9806917958f037db65b58a6c16b85e60749bbb78a6a57fc36387aa32
sha512: 9936bffe4d9d6c6b1ff0863d88b72eead19071a5f225451fd68a818b88af9f6b4e64da2933512e2d06a4abb85dbf965b84260710b1539701d8f039be829901f5
ssdeep: 1536:6u0j4Hh7NR84O1z0wf8TxP5Kq960zH9ELuGKULSv4KERYNdQa+T2:6kHhf84sNC1rImGqGTmvtlQa+q
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Vundo.AX also known as:

Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Razy.173713
McAfee Vundo.gen.m
Cylance Unsafe
VIPRE Trojan.Win32.Monder.gen
Sangfor Malware
K7AntiVirus Riskware ( 0040eff71 )
BitDefender Gen:Variant.Razy.173713
K7GW Riskware ( 0040eff71 )
Cybereason malicious.5bd46e
Cyren W32/Virtumonde.W.gen!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Akan [Inf]
ClamAV Win.Downloader.37566-1
Kaspersky Trojan.Win32.Monder.gen
NANO-Antivirus Trojan.Win32.Agent.fwng
ViRobot Trojan.Win32.Downloader.93184.G
Rising Trojan.Win32.VUNDO.fof (CLOUD)
Ad-Aware Gen:Variant.Razy.173713
Emsisoft Gen:Variant.Razy.173713 (B)
Comodo TrojWare.Win32.Monder.gen@1gs5jk
F-Secure Trojan.TR/Vundo.Gen
DrWeb Trojan.Virtumod.based.11
Zillya Downloader.Agent.Win32.1290
TrendMicro Mal_Vundo-31
Sophos ML/PE-A + Troj/Virtum-Gen
Ikarus PUA.Virtumonde
Jiangmin TrojanDownloader.Agent.aavo
Avira TR/Vundo.Gen
MAX malware (ai score=81)
Antiy-AVL Trojan/Win32.Monder
Microsoft Trojan:Win32/Vundo.AX
Arcabit Trojan.Razy.D2A691
SUPERAntiSpyware Trojan.Agent/Gen-Vundo
ZoneAlarm Trojan.Win32.Monder.gen
GData Gen:Variant.Razy.173713
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Monder.R51151
Acronis suspicious
VBA32 BScope.Trojan.Monder
ALYac Gen:Variant.Razy.173713
Malwarebytes MachineLearning/Anomalous.100%
Panda Malicious Packer
TrendMicro-HouseCall Mal_Vundo-31
Tencent Malware.Win32.Gencirc.116a7398
Yandex Trojan.GenAsa!tf0Z4y1S0pQ
SentinelOne Static AI – Malicious PE
Fortinet W32/Vundo.fam!tr
BitDefenderTheta AI:Packer.C54E7B171E
AVG Win32:Akan [Inf]
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Win32/Trojan.e8a

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

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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The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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.

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Press “Install” button.

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Once installed, Anti-Malware will automatically run.

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Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Trojan:Win32/Vundo.AX 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.AX 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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