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

What is Trojan-Ransom.Win32.Avaddon infection?

In this post you will find concerning the definition of Trojan-Ransom.Win32.Avaddon as well as its adverse impact on your computer system. Such ransomware are a form of malware that is specified by on the internet scams to demand paying the ransom money by a victim.

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In the majority of the instances, Trojan-Ransom.Win32.Avaddon infection will advise its sufferers to launch funds transfer for the objective of counteracting the changes that the Trojan infection has actually presented to the target’s device.

Trojan-Ransom.Win32.Avaddon Summary

These alterations can be as adheres to:

  • 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;
  • Creates an autorun.inf file;
  • Uses Windows utilities for basic functionality;
  • 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!
  • 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 records found on the victim’s hard disk — so the sufferer can no more make use of the data;
  • Preventing normal accessibility to the victim’s workstation;
Similar behavior
Related domains Gen:Variant.Ransom.Avaddon.3 Gen:Variant.Ransom.Avaddon.3


The most normal channels through which Trojan-Ransom.Win32.Avaddon Trojans are injected are:

  • By ways of phishing e-mails;
  • As a consequence of user ending up on a resource that holds a malicious software application;

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s computer or stop the gadget from operating in a proper way – while likewise placing a ransom note that mentions the requirement for the sufferers to effect the payment for the purpose of decrypting the files or recovering the documents system back to the initial condition. In many circumstances, the ransom money note will show up when the customer restarts the PC after the system has actually already been harmed.

Trojan-Ransom.Win32.Avaddon circulation networks.

In various corners of the globe, Trojan-Ransom.Win32.Avaddon expands by leaps as well as bounds. Nevertheless, the ransom money notes and tricks of extorting the ransom amount might differ relying on certain regional (regional) settings. The ransom notes and tricks of extorting the ransom money amount may vary depending on specific regional (regional) settings.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software application.

    In particular locations, the Trojans typically wrongfully report having detected some unlicensed applications made it possible for on the victim’s device. The alert after that requires the customer to pay the ransom money.

    Faulty statements about illegal web content.

    In nations where software piracy is less prominent, this method is not as effective for the cyber frauds. Conversely, the Trojan-Ransom.Win32.Avaddon popup alert might incorrectly declare to be originating from a police organization as well as will report having located youngster pornography or various other unlawful data on the device.

    Trojan-Ransom.Win32.Avaddon popup alert might incorrectly declare to be deriving from a legislation enforcement institution as well as will report having located kid pornography or various other illegal data on the gadget. The alert will likewise include a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: ECFCA51F
md5: 733fa33a01c9ddb8dbce9a28ac931da2
name: 733FA33A01C9DDB8DBCE9A28AC931DA2.mlw
sha1: ddbd393b5c2e01cb07fce6642f360a769a097b7b
sha256: 1d5f21f26caefe394d6b217a654f0effb6a6a986257229daf447e8b8966f693e
sha512: 39956a6f5f5f6f8a7997cc1c5a21fe2102b7614407771c1c155061b20249b84e8439dc844c54d27abd5a2c69f087de32e867754e382af1f3f8d256a25a70f2d7
ssdeep: 24576:TCse9+OXLpMePfI8TgmBTCDqEbOpPtpFhyrbxfq:5VOXLpMePfzVTCD7gPtLhgfq
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

Trojan-Ransom.Win32.Avaddon also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 00577dec1 )
Elastic malicious (high confidence)
DrWeb Trojan.MulDrop16.12853
Cynet Malicious (score: 100)
ALYac Gen:Variant.Ransom.Avaddon.3
Cylance Unsafe
Zillya Trojan.Filecoder.Win32.18512
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_90% (W)
Alibaba Ransom:Win32/Avaddon.ecdd89e5
K7GW Trojan ( 00577dec1 )
Cybereason malicious.a01c9d
Cyren W32/Ransom.OS.gen!Eldorado
Symantec Ransom.Avaddon!g1
ESET-NOD32 a variant of Win32/Filecoder.Avaddon.C
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Ransomware.Avaddon-9852658-0
Kaspersky HEUR:Trojan-Ransom.Win32.Avaddon.gen
BitDefender Gen:Variant.Ransom.Avaddon.3
MicroWorld-eScan Gen:Variant.Ransom.Avaddon.3
Tencent Malware.Win32.Gencirc.10ce4b59
Ad-Aware Gen:Variant.Ransom.Avaddon.3
Sophos Troj/Avaddon-A
BitDefenderTheta Gen:NN.ZexaF.34690.Wu0@a8mRu3ni
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom.Win32.AVADDON.SMTHA
McAfee-GW-Edition Trojan-FTMI!733FA33A01C9
Emsisoft Gen:Variant.Ransom.Avaddon.3 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.DelShad.bhg
Webroot W32.Ransom.Avaddon
Avira HEUR/AGEN.1136765
eGambit Unsafe.AI_Score_100%
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/Avaddon.MK!MTB
Arcabit Trojan.Ransom.Avaddon.3
GData Gen:Variant.Ransom.Avaddon.3
AhnLab-V3 Malware/Win32.Ransom.C4280530
McAfee Trojan-FTMI!733FA33A01C9
MAX malware (ai score=86)
VBA32 Trojan.DelShad
Malwarebytes Ransom.Avaddon
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom.Win32.AVADDON.SMTHA
Rising Ransom.Avaddon!1.C7A8 (CLOUD)
Yandex Trojan.DelShad!9+W8qxhoK3A
Ikarus Trojan-Ransom.Avaddon
MaxSecure Trojan.Malware.74279478.susgen
Fortinet W32/Avaddon.C!tr.ransom
AVG Win32:Trojan-gen

How to remove Trojan-Ransom.Win32.Avaddon 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 GridinSoft2

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft3.

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-Ransom.Win32.Avaddon 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 Trojan-Ransom.Win32.Avaddon you can always ask me in the comments for getting help.

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  1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server
  2. GridinSoft Anti-Malware Review from HowToFix site:
  3. More information about GridinSoft products:

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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