Backdoor:WinNT/Knockex!rfn

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

What is Backdoor:WinNT/Knockex!rfn infection?

In this article you will certainly locate about the definition of Backdoor:WinNT/Knockex!rfn as well as its negative impact on your computer. Such ransomware are a type of malware that is clarified by online scams to demand paying the ransom by a target.

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Most of the instances, Backdoor:WinNT/Knockex!rfn infection will instruct its targets to start funds move for the function of counteracting the changes that the Trojan infection has presented to the victim’s gadget.

Backdoor:WinNT/Knockex!rfn Summary

These adjustments can be as complies with:

  • Ciphering the records found on the target’s hard drive — so the target can no longer make use of the information;
  • Preventing normal accessibility 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.

Backdoor:WinNT/Knockex!rfn

The most typical networks whereby Backdoor:WinNT/Knockex!rfn Trojans are infused are:

  • By ways of phishing e-mails;
  • As a repercussion of user winding up on a resource that hosts a malicious software;

As soon as the Trojan is successfully injected, it will either cipher the information on the victim’s PC or protect against the tool from operating in an appropriate manner – while likewise placing a ransom note that mentions the requirement for the sufferers to effect the settlement for the objective of decrypting the files or bring back the data system back to the first condition. In most circumstances, the ransom money note will come up when the client restarts the PC after the system has actually already been damaged.

Backdoor:WinNT/Knockex!rfn circulation channels.

In different edges of the world, Backdoor:WinNT/Knockex!rfn expands by jumps and also bounds. Nevertheless, the ransom money notes and also tricks of obtaining the ransom money quantity might vary depending on specific local (regional) setups. The ransom money notes as well as tricks of obtaining the ransom amount might differ depending on certain neighborhood (local) settings.

Ransomware injection

As an example:

    Faulty notifies regarding unlicensed software application.

    In specific locations, the Trojans often wrongfully report having spotted some unlicensed applications made it possible for on the sufferer’s gadget. The alert after that requires the customer to pay the ransom money.

    Faulty declarations about illegal web content.

    In countries where software piracy is less prominent, this technique is not as effective for the cyber scams. Additionally, the Backdoor:WinNT/Knockex!rfn popup alert might wrongly assert to be originating from a law enforcement institution as well as will report having situated kid porn or various other illegal information on the tool.

    Backdoor:WinNT/Knockex!rfn popup alert might wrongly assert to be acquiring from a legislation enforcement organization and also will report having situated child pornography or other unlawful information on the gadget. The alert will similarly include a need for the individual to pay the ransom.

Technical details

File Info:

crc32: EC199962
md5: 0b126bb21dbba31150e8a3fc8ee1b2f1
name: 0B126BB21DBBA31150E8A3FC8EE1B2F1.mlw
sha1: fc42fc5455f02abbce4068593e95d7bf8b2d9d11
sha256: b888dbe9d08c5518ab55f3ec9ab418d115c7b4b3d0291ba441d9ba3d88b0d50d
sha512: e11019a1334081503aae78da9d9f98412935f89953b21f8de35882ba4c668a458d351a21fa771c258e91e4c1bf1a5ed182416ff16427200097531f0739c8932c
ssdeep: 12288:a34JydFP+w6VUEnJKcIU4RaAjhaWVAIOvaPWashLfW:aQyddRYhJK6vaPrAD
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Backdoor:WinNT/Knockex!rfn also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
FireEye Generic.mg.0b126bb21dbba311
CAT-QuickHeal Trojan.Wacatac
VIPRE Trojan.Win32.Generic!BT
Sangfor Trojan.Win32.Save.a
Cybereason malicious.455f02
Cyren W32/Virlock.N.gen!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:VirLock-B [Trj]
ClamAV Win.Virus.Virlock-6804475-0
Alibaba Trojan:Win32/VirLock.0eb9ef86
Rising [email protected] (RDML:dmSgqcQUbqiJ2pCV4sDmgg)
F-Secure Trojan.TR/Crypt.XPACK.Gen
TrendMicro TROJ_GEN.R067C0PLL20
McAfee-GW-Edition BehavesLike.Win32.Ransom.gc
Sophos Troj/Agent-BGDM
Ikarus Trojan.Crypt
Avira TR/Crypt.XPACK.Gen
Antiy-AVL GrayWare/Win32.Virlock.a
Microsoft Backdoor:WinNT/Knockex!rfn
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Virlock.C3017793
Acronis suspicious
McAfee RDN/Generic.com
Malwarebytes Generic.Trojan.Dropper.DDS
TrendMicro-HouseCall TROJ_GEN.R067C0PLL20
Yandex Virus.Virlock.Gen.AAK
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.121218.susgen
Fortinet W32/Virlock.B
AVG Win32:VirLock-B [Trj]
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Ransom.PolyRansom.HgIASOYA

How to remove Backdoor:WinNT/Knockex!rfn 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 Backdoor:WinNT/Knockex!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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Backdoor:WinNT/Knockex!rfn you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. 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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