VirTool:Win32/Obfuscator.AOW

What is VirTool:Win32/Obfuscator.AOW infection?

In this article you will certainly find regarding the definition of VirTool:Win32/Obfuscator.AOW and its unfavorable impact on your computer. Such ransomware are a form of malware that is elaborated by online frauds to demand paying the ransom money by a target.

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In the majority of the cases, VirTool:Win32/Obfuscator.AOW virus will certainly instruct its targets to start funds transfer for the function of counteracting the changes that the Trojan infection has actually introduced to the victim’s device.

VirTool:Win32/Obfuscator.AOW 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.
  • Compression (or decompression);
  • 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.

  • Unconventionial language used in binary resources: Chinese (Macau);
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • Ciphering the files situated on the sufferer’s hard disk — so the victim can no longer use 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.

VirTool:Win32/Obfuscator.AOW

The most common networks whereby VirTool:Win32/Obfuscator.AOW Trojans are infused are:

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

As soon as the Trojan is efficiently injected, it will certainly either cipher the data on the victim’s computer or avoid the tool from functioning in a proper fashion – while likewise positioning a ransom money note that points out the demand for the sufferers to impact the payment for the objective of decrypting the papers or recovering the file system back to the preliminary problem. In most instances, the ransom note will certainly turn up when the client restarts the COMPUTER after the system has already been damaged.

VirTool:Win32/Obfuscator.AOW circulation networks.

In various edges of the globe, VirTool:Win32/Obfuscator.AOW grows by leaps and also bounds. Nevertheless, the ransom money notes and also techniques of obtaining the ransom money amount may vary relying on particular regional (regional) setups. The ransom money notes and methods of obtaining the ransom quantity might differ depending on specific regional (local) settings.

Ransomware injection

For instance:

    Faulty alerts concerning unlicensed software program.

    In particular locations, the Trojans typically wrongfully report having actually found some unlicensed applications enabled on the victim’s gadget. The alert then demands the customer to pay the ransom.

    Faulty statements regarding prohibited material.

    In countries where software application piracy is less preferred, this approach is not as effective for the cyber fraudulences. Alternatively, the VirTool:Win32/Obfuscator.AOW popup alert may falsely declare to be originating from a law enforcement institution and will report having located child porn or other unlawful data on the tool.

    VirTool:Win32/Obfuscator.AOW popup alert might incorrectly claim to be acquiring from a legislation enforcement establishment as well as will certainly report having situated child pornography or various other illegal information on the device. The alert will similarly contain a need for the user to pay the ransom money.

Technical details

File Info:

crc32: A6A02DB1
md5: 4e02af097d89a9da4626712ace116951
name: 4E02AF097D89A9DA4626712ACE116951.mlw
sha1: 9852c68c4ca1c042369657fd33b1cf9f8a90f325
sha256: 9de386b80e7445654a7f5b7a49648ed1efc319a3fbce1e8e91dcd94499998eb6
sha512: 9114ae9ed41d401a2e8b08f20a0785e7eea1b9421ac68bec79c90a5336d4bd70f8f9fcfd7c0fb7cd984ab16a4e362c462fb26b828c8e85775faf9ab03a6fd020
ssdeep: 6144:6sATeHUCwiQOW8bFX/+BTKkWiXdi87jIKXBOIWJoWurp:yeHvwiQgbFX/mT/XIkBBgyrp
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Fetid xa9 1916
InternalName: Indecision
FileVersion: 120, 106, 141, 185
CompanyName: GotAllMedia
ProductName: Enveloping Expansionary
FileDescription: Dramatic
OriginalFilename: Euro.exe

VirTool:Win32/Obfuscator.AOW also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.TeslaCrypt.WR4
Cylance Unsafe
Zillya Trojan.Yakes.Win32.39019
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Trojan:Win32/Waldek.0da644d0
K7GW Trojan ( 004d41c61 )
K7AntiVirus Trojan ( 004d41c61 )
Cyren W32/Trojan.WTCA-1633
ESET-NOD32 Win32/Filecoder.TeslaCrypt.D
APEX Malicious
Avast Win32:TeslaCrypt-BH [Trj]
Kaspersky Trojan.Win32.Waldek.rxr
BitDefender Trojan.Cripack.Gen.1
NANO-Antivirus Trojan.Win32.Yakes.dvrmpl
MicroWorld-eScan Trojan.Cripack.Gen.1
Tencent Malware.Win32.Gencirc.114c7af3
Ad-Aware Trojan.Cripack.Gen.1
Sophos ML/PE-A + Mal/Tinba-AB
Comodo Malware@#dbj25czxmlse
BitDefenderTheta Gen:NN.ZexaF.34628.tq3@aiugMYkH
VIPRE Trojan.Win32.Generic!BT
TrendMicro Cryp_HpMyApp
McAfee-GW-Edition TeslaCrypt!4E02AF097D89
FireEye Generic.mg.4e02af097d89a9da
Emsisoft Trojan.Cripack.Gen.1 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Yakes.xws
Webroot Trojan.Dropper.Gen
Avira HEUR/AGEN.1132448
eGambit Generic.Malware
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft VirTool:Win32/Obfuscator.AOW
Arcabit Trojan.Cripack.Gen.1
AegisLab Trojan.Win32.Waldek.4!c
GData Trojan.Cripack.Gen.1
AhnLab-V3 Win-Trojan/Lockycrypt.Gen
Acronis suspicious
McAfee TeslaCrypt!4E02AF097D89
MAX malware (ai score=100)
VBA32 Trojan.Yakes
Malwarebytes Trojan.CryptoLocker
Panda Trj/Genetic.gen
TrendMicro-HouseCall Cryp_HpMyApp
Rising Ransom.Tescrypt!8.3AF (CLOUD)
Yandex Trojan.Yakes!kXVqM1EWM7U
Ikarus Trojan.Win32.Yakes
Fortinet W32/Deshacop.XO!tr
AVG Win32:TeslaCrypt-BH [Trj]
Qihoo-360 HEUR/QVM07.1.024D.Malware.Gen

How to remove VirTool:Win32/Obfuscator.AOW 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

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 VirTool:Win32/Obfuscator.AOW 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 VirTool:Win32/Obfuscator.AOW 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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