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

What is Trojan.Ransom.Ouroboros infection?

In this article you will certainly discover concerning the interpretation of Trojan.Ransom.Ouroboros and its negative effect on your computer system. Such ransomware are a form of malware that is elaborated by on-line frauds to require paying the ransom money by a victim.

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Most of the cases, Trojan.Ransom.Ouroboros ransomware will certainly advise its sufferers to launch funds move for the purpose of counteracting the amendments that the Trojan infection has actually presented to the victim’s gadget.

Trojan.Ransom.Ouroboros Summary

These adjustments can be as complies with:

  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • 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.
  • Creates a copy of itself;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers located on the sufferer’s hard disk drive — so the target can no longer utilize the information;
  • Preventing normal access to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


One of the most regular channels whereby Trojan.Ransom.Ouroboros Ransomware Trojans are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a consequence of customer ending up on a source that holds a destructive software;

As quickly as the Trojan is effectively injected, it will either cipher the data on the victim’s PC or prevent the device from working in an appropriate manner – while also placing a ransom money note that discusses the demand for the victims to impact the payment for the function of decrypting the documents or restoring the file system back to the initial condition. In the majority of instances, the ransom note will come up when the client restarts the COMPUTER after the system has already been damaged.

Trojan.Ransom.Ouroboros circulation networks.

In different edges of the globe, Trojan.Ransom.Ouroboros grows by leaps as well as bounds. However, the ransom money notes and tricks of extorting the ransom money quantity may vary depending upon specific regional (local) settings. The ransom notes and also tricks of obtaining the ransom quantity might differ depending on certain local (regional) settings.

Ransomware injection

For example:

    Faulty signals about unlicensed software program.

    In particular areas, the Trojans commonly wrongfully report having found some unlicensed applications made it possible for on the target’s device. The sharp then demands the individual to pay the ransom.

    Faulty statements concerning prohibited material.

    In countries where software application piracy is less prominent, this method is not as effective for the cyber frauds. Conversely, the Trojan.Ransom.Ouroboros popup alert might falsely declare to be deriving from a law enforcement institution and also will report having situated kid porn or other prohibited information on the tool.

    Trojan.Ransom.Ouroboros popup alert may falsely assert to be obtaining from a regulation enforcement organization and also will certainly report having located child porn or various other illegal data on the gadget. The alert will similarly consist of a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: B1D196E3
md5: 97f129ed757c6b095b87b5a58f695698
name: 97F129ED757C6B095B87B5A58F695698.mlw
sha1: a1d20b051415abb1ca618416e8ace9c74531da40
sha256: 350ddf06306b557d376a93a721f065b66610642da1bbff4809fefcb40ba839dc
sha512: 48d0214d93eacd68aa8aaa438ee19facd6214595c579af75ecf3076697bd8a2f019c9ab76ac2b8fdeff331206b49046cef71580a96c2a7728a8a0e4611e7ce04
ssdeep: 24576:uAHnh+eWsN3skA4RV1Hom2KXMmHaQ5jfzhuX5:Zh+ZkldoPK8YaQ5pY
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0809 0x04b0

Trojan.Ransom.Ouroboros also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 004f65341 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.24576
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Autoit.CryptoWire.A
ALYac Trojan.Ransom.Ouroboros
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Ouroboros.ali1020019
K7GW Trojan ( 004f65341 )
Cybereason malicious.d757c6
Cyren W32/AutoIt.NU.gen!Eldorado
Symantec Ransom.Cryptolocker
ESET-NOD32 Win32/Filecoder.NHN
APEX Malicious
Avast AutoIt:Ransom-K [Trj]
Kaspersky Trojan-Ransom.Script.Agent.f
BitDefender Trojan.GenericKD.42832256
NANO-Antivirus Trojan.Win32.Ransom.herhdw
MicroWorld-eScan Trojan.GenericKD.42832256
Tencent Script.Trojan.Agent.Hwwf
Ad-Aware Trojan.GenericKD.42832256
Comodo Malware@#25mk0l5vtn5xj
BitDefenderTheta AI:Packer.C658345116
VIPRE Trojan.Win32.Generic!BT
TrendMicro Mal_Cryptoit-1
FireEye Trojan.GenericKD.42832256
Emsisoft Trojan.GenericKD.42832256 (B)
Webroot W32.Trojan.Agent.Gen
Avira HEUR/AGEN.1100014
eGambit Unsafe.AI_Score_94%
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/CryptoWire!MSR
AegisLab Hacktool.Win32.Gamehack.3!e
GData Trojan.GenericKD.42832256
McAfee Artemis!97F129ED757C
MAX malware (ai score=100)
VBA32 TrojanRansom.Script
Malwarebytes Ransom.FileCryptor
Panda Trj/CI.A
TrendMicro-HouseCall Mal_Cryptoit-1
Rising Ransom.CryptoWire/Autoit!1.C3A2 (CLASSIC)
Ikarus Trojan-Ransom.Ouroboros
MaxSecure Trojan.Malware.73662528.susgen
Fortinet AutoIt/Ouroboros.A!tr.ransom
AVG AutoIt:Ransom-K [Trj]

How to remove Trojan.Ransom.Ouroboros 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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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 Trojan.Ransom.Ouroboros 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Trojan.Ransom.Ouroboros you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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