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

What is Trojan-Ransom.Win32.Crusis.byn infection?

In this post you will find about the meaning of Trojan-Ransom.Win32.Crusis.byn as well as its unfavorable impact on your computer. Such ransomware are a type of malware that is elaborated by online frauds to demand paying the ransom money by a sufferer.

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In the majority of the situations, Trojan-Ransom.Win32.Crusis.byn infection will instruct its sufferers to start funds transfer for the function of neutralizing the modifications that the Trojan infection has introduced to the victim’s gadget.

Trojan-Ransom.Win32.Crusis.byn 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.
  • 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.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • 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.

  • Attempts to delete volume shadow copies;
  • 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 files found on the target’s hard disk — so the sufferer can no more utilize the data;
  • Preventing routine access to the sufferer’s workstation;


One of the most regular channels through which Trojan-Ransom.Win32.Crusis.byn Trojans are infused are:

  • By ways of phishing emails;
  • As a consequence of user winding up on a resource that holds a destructive software application;

As soon as the Trojan is successfully injected, it will either cipher the information on the sufferer’s computer or protect against the gadget from working in a proper way – while also putting a ransom money note that states the requirement for the victims to effect the payment for the objective of decrypting the documents or recovering the file system back to the first problem. In many circumstances, the ransom money note will certainly turn up when the client restarts the PC after the system has already been harmed.

Trojan-Ransom.Win32.Crusis.byn circulation channels.

In numerous edges of the globe, Trojan-Ransom.Win32.Crusis.byn grows by jumps and also bounds. However, the ransom notes and methods of obtaining the ransom quantity might differ depending upon certain local (local) setups. The ransom money notes as well as tricks of extorting the ransom amount may differ depending on specific local (local) setups.

Ransomware injection

For instance:

    Faulty notifies about unlicensed software program.

    In certain locations, the Trojans typically wrongfully report having actually identified some unlicensed applications enabled on the target’s gadget. The alert then demands the individual to pay the ransom money.

    Faulty declarations concerning illegal content.

    In nations where software piracy is less popular, this method is not as reliable for the cyber scams. Additionally, the Trojan-Ransom.Win32.Crusis.byn popup alert may falsely claim to be stemming from a law enforcement institution and will certainly report having located kid pornography or other unlawful information on the tool.

    Trojan-Ransom.Win32.Crusis.byn popup alert may wrongly claim to be deriving from a legislation enforcement institution and also will certainly report having located youngster porn or other illegal data on the device. The alert will similarly contain a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: B47071B3
md5: 5a26db05aa4542f1a568a8d564adfe85
name: 5A26DB05AA4542F1A568A8D564ADFE85.mlw
sha1: 4d4b2b5b1798fbb041c1080452d3262b31565453
sha256: aa42b7b5bd7800de2aac475f469d3a3d59ddc412ddcb3e6ed893028b331c89af
sha512: be2589f2152b37c50403152aba729a775bc336ddd84d9c60198c92d79991090b16d4401999e6c08f62c8faa6c6be2342478d344e121a063ca5ba911a05d03e82
ssdeep: 3072:YpHp3LCFuYEzK+3KEgyY1qUFrL0NWR0HjE1S54Hfur82prE++:GJGFBaPV01qKL0Nqyuf682d
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 2010 by Acro Software Inc., All Rights Reserved
InternalName: PDF Writer
FileVersion: 2, 7, 7, 1
CompanyName: Acro Software Inc.
LegalTrademarks: PDF Writer
ProductName: PDF Writer Application
ProductVersion: 2, 7, 0, 1
FileDescription: PDF Writer Application
OriginalFilename: PDFWriter.EXE
Translation: 0x0409 0x04b0

Trojan-Ransom.Win32.Crusis.byn also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Backdoor ( 005328fd1 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.3953
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.MauvaiseRI.S5252142
ALYac Trojan.Ransom.Troldesh.GenericKD.30325693
Cylance Unsafe
Zillya Trojan.Crusis.Win32.813
Sangfor Ransom.Win32.Crusis.byn
CrowdStrike win/malicious_confidence_100% (W)
K7GW Backdoor ( 005328fd1 )
Cybereason malicious.5aa454
Symantec Packed.Generic.459
ESET-NOD32 Win32/Filecoder.Crysis.P
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Malware.Emotet-7169098-0
Kaspersky Trojan-Ransom.Win32.Crusis.byn
BitDefender Trojan.Ransom.Troldesh.GenericKD.30325693
NANO-Antivirus Trojan.Win32.Crusis.exyfcd
SUPERAntiSpyware Trojan.Agent/Gen-Crypt
MicroWorld-eScan Trojan.Ransom.Troldesh.GenericKD.30325693
Ad-Aware Trojan.Ransom.Troldesh.GenericKD.30325693
Sophos ML/PE-A + Mal/Cerber-AL
Comodo Malware@#x1zp69mr3b0p
F-Secure Heuristic.HEUR/AGEN.1125229
BitDefenderTheta Gen:NN.ZexaF.34738.jq0@aqizYKii
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CRYSIS.TICOAAP
Emsisoft Trojan.Ransom.Troldesh.GenericKD.30325693 (B)
SentinelOne Static AI – Malicious PE
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1125229
Antiy-AVL Trojan/Generic.ASMalwS.246D5CF
Microsoft Ransom:Win32/Wadhrama.A!rfn
Arcabit Trojan.Ransom.Troldesh.Generic.D1CEBBBD
AegisLab Trojan.Win32.Crusis.j!c
GData Trojan.Ransom.Troldesh.GenericKD.30325693
AhnLab-V3 Win-Trojan/Lukitus2.Exp
Acronis suspicious
McAfee Generic.czw
MAX malware (ai score=97)
VBA32 BScope.TrojanDownloader.Dridex
TrendMicro-HouseCall Ransom_CRYSIS.TICOAAP
Rising Trojan.Kryptik!1.B04B (CLASSIC)
Yandex Trojan.Crusis!cpTVCapZOWI
Ikarus Trojan-Proxy.Agent
Fortinet W32/Injector.EETM!tr
AVG Win32:Malware-gen

How to remove Trojan-Ransom.Win32.Crusis.byn virus?

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

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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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