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

What is Trojan:Win32/KillDisk!rfn infection?

In this short article you will certainly find about the interpretation of Trojan:Win32/KillDisk!rfn and its unfavorable impact on your computer system. Such ransomware are a type of malware that is clarified by on-line fraudulences to require paying the ransom by a target.

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Most of the instances, Trojan:Win32/KillDisk!rfn virus will certainly advise its victims to launch funds transfer for the objective of neutralizing the amendments that the Trojan infection has actually introduced to the target’s device.

Trojan:Win32/KillDisk!rfn Summary

These modifications can be as adheres to:

  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • Uses Windows utilities for basic functionality;
  • 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!
  • Steals private information from local Internet browsers;
  • 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
  • Exhibits possible ransomware file modification behavior;
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Clears Windows events or logs;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents situated on the sufferer’s hard disk drive — so the victim can no more use the information;
  • Preventing regular 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.


One of the most typical networks through which Trojan:Win32/KillDisk!rfn Ransomware Trojans are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of user winding up on a resource that holds a harmful software application;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the information on the target’s PC or prevent the device from working in an appropriate way – while likewise positioning a ransom money note that points out the requirement for the sufferers to effect the settlement for the purpose of decrypting the files or recovering the data system back to the first condition. In the majority of instances, the ransom note will certainly show up when the customer reboots the PC after the system has actually currently been damaged.

Trojan:Win32/KillDisk!rfn circulation channels.

In numerous corners of the world, Trojan:Win32/KillDisk!rfn expands by jumps as well as bounds. Nonetheless, the ransom notes as well as tricks of extorting the ransom money quantity may differ depending upon particular neighborhood (regional) settings. The ransom notes and tricks of obtaining the ransom money quantity may differ depending on certain regional (regional) settings.

Ransomware injection

For example:

    Faulty informs about unlicensed software program.

    In particular areas, the Trojans frequently wrongfully report having spotted some unlicensed applications made it possible for on the target’s gadget. The alert then requires the user to pay the ransom.

    Faulty statements regarding unlawful content.

    In countries where software application piracy is much less preferred, this approach is not as effective for the cyber fraudulences. Alternatively, the Trojan:Win32/KillDisk!rfn popup alert might wrongly claim to be deriving from a police organization and also will certainly report having situated youngster pornography or other prohibited data on the device.

    Trojan:Win32/KillDisk!rfn popup alert might incorrectly claim to be acquiring from a legislation enforcement establishment and also will report having situated child porn or other illegal data on the tool. The alert will likewise contain a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 3258D2C2
md5: 0e5a42920c94f4caa36cc0764bdbfc3d
name: 0E5A42920C94F4CAA36CC0764BDBFC3D.mlw
sha1: b2e566c3ce8da3c6d9b4dc2811d5d08729dc2900
sha256: 368d5c536832b843c6de2513baf7b11bcafea1647c65df7b6f2648840fa50f75
sha512: c87e1755b35e3292421f30f2e3a2ff1b98506d9b3b443423d2c9b167ab152936d8718fbfa0f507a386319300f6829d0e3b5335c94b8606d416f9d330c4a6b315
ssdeep: 3072:E0CxNxH0snE6G82K1LZhYxoEERoXeiqU1iHWhOgJIZ5IkWto:E0CxNxH0sg8241hYxS9i0WhLIZ5Ikv
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) Microsoft Corp. 1981-2001
InternalName: Update center
FileVersion: 7,1
CompanyName: Microsoft Corporation
Comments: Modified by an unpaid evaluation copy of Resource Tuner 2 (
ProductName: Microsoft(R) Windows (R) 2000 Operating System
ProductVersion: 5, 2
FileDescription: System update center
Translation: 0x0409 0x04b0

Trojan:Win32/KillDisk!rfn also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 00500fc81 )
DrWeb Trojan.Siggen7.8407
ALYac Trojan.Ransom.KillDisk
Cylance Unsafe
Zillya Trojan.KillDisk.Win32.187
Sangfor Ransom.Win32.KillDisk.B
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:Win32/KillDisk.a73e6a69
K7GW Trojan ( 00500fc81 )
Cybereason malicious.20c94f
Cyren W32/KillDisk.A!Eldorado
Symantec Trojan.Disakil
ESET-NOD32 a variant of Win32/KillDisk.NBK
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Trojan.KillDisk-3
Kaspersky Trojan.Win32.KillDisk.fx
BitDefender Trojan.Ransom.KillDisk.B
NANO-Antivirus Trojan.Win32.KillDisk.ekawze
ViRobot Trojan.Win32.KillDisk.204800.A
MicroWorld-eScan Trojan.Ransom.KillDisk.B
Ad-Aware Trojan.Ransom.KillDisk.B
Sophos Mal/Generic-S
Comodo Malware@#23krtj93ljhx2
F-Secure Trojan.TR/KillDisk.pqfjh
BitDefenderTheta Gen:NN.ZexaF.34738.mq0@a4lFt1ci
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_KILLDISK.B
McAfee-GW-Edition Generic.awd
FireEye Trojan.Ransom.KillDisk.B
Emsisoft Trojan.Ransom.KillDisk.B (B)
Jiangmin Trojan.KillDisk.g
Webroot W32.Trojan.Killdisk
Avira TR/KillDisk.pqfjh
Kingsoft Win32.Troj.KillDisk.fx.(kcloud)
Microsoft Trojan:Win32/KillDisk!rfn
Arcabit Trojan.Ransom.KillDisk.B
AegisLab Trojan.Win32.KillDisk.4!c
ZoneAlarm Trojan.Win32.KillDisk.fx
GData Trojan.Ransom.KillDisk.B
AhnLab-V3 Trojan/Win32.KillDisk.C1737725
McAfee Generic.awd
MAX malware (ai score=100)
VBA32 BScope.Trojan.KillDisk
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_KILLDISK.B
Rising [email protected] (RDML:oI4FwubHDVHjWWERRquCZw)
Yandex Trojan.GenAsa!4kYWNNGQx7E
Ikarus Trojan-Ransom.KillDisk
Fortinet W32/Generic.AP.49AFC!tr
AVG Win32:Malware-gen

How to remove Trojan:Win32/KillDisk!rfn 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:Win32/KillDisk!rfn 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:Win32/KillDisk!rfn 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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