Ransom:Win32/Avaddon.AA!MTB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Ransom:Win32/Avaddon.AA!MTB infection?

In this short article you will certainly find concerning the interpretation of Ransom:Win32/Avaddon.AA!MTB as well as its negative effect on your computer system. Such ransomware are a kind of malware that is elaborated by on the internet frauds to demand paying the ransom money by a target.

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In the majority of the cases, Ransom:Win32/Avaddon.AA!MTB ransomware will instruct its sufferers to start funds transfer for the purpose of neutralizing the modifications that the Trojan infection has actually presented to the target’s tool.

Ransom:Win32/Avaddon.AA!MTB Summary

These alterations can be as complies with:

  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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.
  • A process attempted to delay the analysis task.;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • A process created a hidden window;
  • Performs some HTTP requests;
  • Unconventionial language used in binary resources: Russian;
  • Creates an autorun.inf file;
  • Uses Windows utilities for basic functionality;
  • Sniffs keystrokes;
  • Attempts to delete volume shadow copies;
  • 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!
  • Modifies boot configuration settings;
  • 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.
  • Clears Windows events or logs;
  • Creates a copy of itself;
  • Attempts to disable UAC.

    User Account Control or just UAC is a part of the Windows security system which prevents apps from making unwanted changes on PC.

    UAC includes several technologies 1:

    • File and egistry Virtualization;
    • Same-desktop Elevation;
    • Filtered Token;
    • User Interface Privilege Isolation;
    • Protected Mode Internet Explorer;
    • Installer Detection;
  • Attempts to modify UAC prompt behavior;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers situated on the sufferer’s hard drive — so the target can no longer make use of the information;
  • Preventing normal access to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Similar behavior
Related domains
api.myip.com Ransom_Avaddon.R002C0DFL20
ocsp.digicert.com Ransom_Avaddon.R002C0DFL20
crl4.digicert.com Ransom_Avaddon.R002C0DFL20
crl3.digicert.com Ransom_Avaddon.R002C0DFL20

Ransom:Win32/Avaddon.AA!MTB

The most normal channels through which Ransom:Win32/Avaddon.AA!MTB Trojans are infused are:

  • By ways of phishing emails;
  • As an effect of individual ending up on a source that holds a destructive software;

As soon as the Trojan is efficiently infused, it will either cipher the data on the victim’s computer or protect against the device from working in an appropriate manner – while also placing a ransom money note that mentions the requirement for the sufferers to effect the settlement for the function of decrypting the files or restoring the data system back to the preliminary condition. In the majority of circumstances, the ransom money note will certainly show up when the client restarts the PC after the system has currently been damaged.

Ransom:Win32/Avaddon.AA!MTB circulation networks.

In different edges of the world, Ransom:Win32/Avaddon.AA!MTB expands by jumps as well as bounds. However, the ransom money notes and also methods of obtaining the ransom amount may vary depending upon certain local (local) setups. The ransom notes as well as tricks of extorting the ransom quantity may differ depending on certain neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty notifies concerning unlicensed software application.

    In particular areas, the Trojans commonly wrongfully report having identified some unlicensed applications made it possible for on the sufferer’s tool. The alert after that requires the individual to pay the ransom.

    Faulty statements about illegal content.

    In nations where software piracy is less preferred, this technique is not as effective for the cyber scams. Conversely, the Ransom:Win32/Avaddon.AA!MTB popup alert may incorrectly assert to be deriving from a law enforcement organization and will report having located kid porn or various other illegal data on the tool.

    Ransom:Win32/Avaddon.AA!MTB popup alert may wrongly claim to be deriving from a law enforcement establishment and will certainly report having located child pornography or various other prohibited data on the device. The alert will likewise contain a need for the individual to pay the ransom.

Technical details

File Info:

crc32: 11D73EF2
md5: 6c660f960daac148be75427c712d0134
name: wtava.exe
sha1: b3c597060abc20d3b3291f8b5252a3834d49b92f
sha256: fa4626e2c5984d7868a685c5102530bd8260d0b31ef06d2ce2da7636da48d2d6
sha512: 48806df9787497cbf55a85a523c8e703aec1bb262c60a019ab45f420a87d016054a97dc428484bd5c2f7ba1c3f57a37d807fc4e1de487dbef1c76dc38fbf8fe0
ssdeep: 24576:du13Ii3FoHjrdVIxpxJbpvR+h8O+DB8lll7IbbbbpcMs:du3IDHjrdVIxpxhe8O68Ll7IbbbbpcM
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9 Microsoft Corporation. All rights reserved.
InternalName: taskhost.exe
FileVersion: 10.0.17763.831 (WinBuild.160101.0800)
CompanyName: Microsoft Corporation
ProductName: Microsoftxae Windowsxae Operating System
ProductVersion: 10.0.17763.831
FileDescription: Host Process for Windows Tasks
OriginalFilename: taskhost.exe
Translation: 0x0409 0x04b0

Ransom:Win32/Avaddon.AA!MTB also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malwareA
MicroWorld-eScan Trojan.GenericKD.43369001
FireEye Generic.mg.6c660f960daac148
Qihoo-360 Win32/Trojan.fc8
McAfee Artemis!6C660F960DAA
Cylance Unsafe
Sangfor Malware
K7AntiVirus Trojan ( 005690961 )
BitDefender Trojan.GenericKD.43369001
K7GW Trojan ( 005690961 )
TrendMicro Ransom_Avaddon.R002C0DFL20
BitDefenderTheta Gen:NN.ZexaF.34128.fv0@a4eenIpc
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Filecoder.Avaddon.A
APEX Malicious
Paloalto generic.ml
GData Trojan.GenericKD.43369001
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Ransom:Win32/Avaddon.0fdd9907
NANO-Antivirus Trojan.Win32.Filecoder.hligiu
Tencent Win32.Trojan.Raas.Auto
Emsisoft Trojan.GenericKD.43369001 (B)
Comodo Malware@#175blug569wm6
F-Secure Trojan.TR/AD.AvaddonRansom.ujryc
DrWeb Trojan.Siggen9.55346
McAfee-GW-Edition BehavesLike.Win32.Injector.th
Sophos Mal/Generic-S
Ikarus Trojan-Ransom.Avaddon
Cyren W32/Trojan.ZJWW-8107
Avira TR/AD.AvaddonRansom.ujryc
MAX malware (ai score=99)
Microsoft Ransom:Win32/Avaddon.AA!MTB
Arcabit Trojan.Generic.D295C229
AhnLab-V3 Malware/Win32.RL_Generic.R341088
ZoneAlarm HEUR:Trojan.Win32.Generic
Cynet Malicious (score: 85)
ALYac Trojan.Ransom.Avaddon
Ad-Aware Trojan.GenericKD.43369001
Malwarebytes Ransom.Avaddon
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_Avaddon.R002C0DFL20
Rising Ransom.Avaddon!1.C7A8 (CLOUD)
eGambit Unsafe.AI_Score_99%
Fortinet W32/Filecoder_Avaddon.A!tr
AVG Win32:TrojanX-gen [Trj]
Avast Win32:TrojanX-gen [Trj]
CrowdStrike win/malicious_confidence_60% (W)

How to remove Ransom:Win32/Avaddon.AA!MTB 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 GridinSoft2

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.3.

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 Ransom:Win32/Avaddon.AA!MTB 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Ransom:Win32/Avaddon.AA!MTB you can always ask me in the comments for getting help.

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References

  1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server
  2. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  3. More information about GridinSoft products: https://gridinsoft.com/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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