Trojan.Ransom.Avaddon

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

What is Trojan.Ransom.Avaddon infection?

In this post you will locate regarding the interpretation of Trojan.Ransom.Avaddon and also its negative effect on your computer system. Such ransomware are a form of malware that is clarified by on-line fraudulences to require paying the ransom money by a sufferer.

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In the majority of the cases, Trojan.Ransom.Avaddon virus will certainly instruct its sufferers to start funds transfer for the objective of reducing the effects of the modifications that the Trojan infection has actually introduced to the sufferer’s tool.

Trojan.Ransom.Avaddon Summary

These modifications can be as complies with:

  • Attempts to connect to a dead IP:Port (3 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.;
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • A process created a hidden window;
  • 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.
  • Performs some HTTP requests;
  • 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!
  • 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 create or modify system certificates;
  • Attempts to modify UAC prompt behavior;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files located on the target’s hard disk — so the target can no longer make use of the information;
  • Preventing routine 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.

Trojan.Ransom.Avaddon

One of the most regular networks where Trojan.Ransom.Avaddon are injected are:

  • By ways of phishing emails;
  • As an effect of user winding up on a resource that hosts a destructive software program;

As soon as the Trojan is successfully infused, it will either cipher the data on the target’s PC or prevent the gadget from operating in an appropriate fashion – while also positioning a ransom note that states the requirement for the sufferers to effect the repayment for the function of decrypting the records or restoring the file system back to the preliminary condition. In most circumstances, the ransom note will certainly turn up when the client restarts the COMPUTER after the system has actually currently been damaged.

Trojan.Ransom.Avaddon circulation networks.

In different edges of the globe, Trojan.Ransom.Avaddon expands by jumps as well as bounds. However, the ransom money notes and tricks of obtaining the ransom money amount may differ depending on specific neighborhood (regional) setups. The ransom notes and also tricks of extorting the ransom amount might vary depending on certain neighborhood (local) setups.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software application.

    In certain locations, the Trojans commonly wrongfully report having found some unlicensed applications made it possible for on the sufferer’s gadget. The alert after that demands the user to pay the ransom.

    Faulty statements concerning unlawful content.

    In nations where software piracy is much less preferred, this method is not as efficient for the cyber frauds. Conversely, the Trojan.Ransom.Avaddon popup alert may incorrectly declare to be deriving from a police organization and also will report having situated youngster pornography or various other unlawful information on the tool.

    Trojan.Ransom.Avaddon popup alert might incorrectly claim to be obtaining from a regulation enforcement establishment and will report having located child porn or other unlawful information on the tool. The alert will similarly contain a need for the individual to pay the ransom.

Technical details

File Info:

crc32: 1587A418
md5: 69c7bd8e85701b304632de56cdbade48
name: 69C7BD8E85701B304632DE56CDBADE48.mlw
sha1: ec46455c52c70864af2c3b125aa2584be7c871ff
sha256: 7872b311111cd0ce33d622c20b96bf326dc54d0412ae9e21d4cc7c050ba61eda
sha512: 1e0e8ade0987668cf0aed2b748258c0efc5c838424689f516fb76d58025a082f0488066cfb111b6aeb791b97f06359860716cd85d21973f90e837ec85d8cdae9
ssdeep: 24576:TCsF9+OXLpMePfI8TgmBTCDqEbOpPtpFhYxfq:5eOXLpMePfzVTCD7gPtLhIfq
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.Avaddon also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 00577dec1 )
Elasticmalicious (high confidence)
DrWebTrojan.MulDrop16.12853
CynetMalicious (score: 100)
ALYacTrojan.Ransom.Avaddon
CylanceUnsafe
ZillyaTrojan.Filecoder.Win32.18512
SangforTrojan.Win32.Save.a
K7GWTrojan ( 00577dec1 )
Cybereasonmalicious.e85701
CyrenW32/Ransom.OS.gen!Eldorado
SymantecRansom.Avaddon!g1
ESET-NOD32a variant of Win32/Filecoder.Avaddon.C
APEXMalicious
AvastWin32:Trojan-gen
ClamAVWin.Ransomware.Avaddon-9852658-0
KasperskyHEUR:Trojan-Ransom.Win32.Generic
BitDefenderGen:Variant.Ransom.Avaddon.3
MicroWorld-eScanGen:Variant.Ransom.Avaddon.3
TencentMalware.Win32.Gencirc.10ce4b59
Ad-AwareGen:Variant.Ransom.Avaddon.3
SophosTroj/Avaddon-A
BitDefenderThetaGen:NN.ZexaF.34692.Wu0@a8mRu3ni
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom.Win32.AVADDON.SMTHA
McAfee-GW-EditionTrojan-FTMI!69C7BD8E8570
FireEyeGeneric.mg.69c7bd8e85701b30
EmsisoftGen:Variant.Ransom.Avaddon.3 (B)
SentinelOneStatic AI – Suspicious PE
JiangminTrojan.DelShad.bhg
AviraHEUR/AGEN.1136765
eGambitUnsafe.AI_Score_100%
Antiy-AVLTrojan/Generic.ASMalwS.3198A1A
MicrosoftRansom:Win32/Avaddon.MK!MTB
ZoneAlarmHEUR:Trojan-Ransom.Win32.Generic
GDataGen:Variant.Ransom.Avaddon.3
TACHYONRansom/W32.Avaddon.794112
AhnLab-V3Malware/Win.Ransom.R421765
McAfeeTrojan-FTMI!69C7BD8E8570
MAXmalware (ai score=80)
MalwarebytesRansom.Avaddon
PandaTrj/GdSda.A
TrendMicro-HouseCallRansom.Win32.AVADDON.SMTHA
RisingRansom.Avaddon!1.C7A8 (C64:YzY0OpNpkeoYdiDi)
YandexTrojan.DelShad!9+W8qxhoK3A
IkarusTrojan-Ransom.Avaddon
MaxSecureTrojan.Malware.74279478.susgen
FortinetW32/Avaddon.C!tr.ransom
AVGWin32:Trojan-gen

How to remove Trojan.Ransom.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.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.Avaddon 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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