Backdoor:WinNT/Knockex!rfn
Ava White
Updated on May 02, 2026
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.
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.
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: EC199962md5: 0b126bb21dbba31150e8a3fc8ee1b2f1name: 0B126BB21DBBA31150E8A3FC8EE1B2F1.mlwsha1: fc42fc5455f02abbce4068593e95d7bf8b2d9d11sha256: b888dbe9d08c5518ab55f3ec9ab418d115c7b4b3d0291ba441d9ba3d88b0d50dsha512: e11019a1334081503aae78da9d9f98412935f89953b21f8de35882ba4c668a458d351a21fa771c258e91e4c1bf1a5ed182416ff16427200097531f0739c8932cssdeep: 12288:a34JydFP+w6VUEnJKcIU4RaAjhaWVAIOvaPWashLfW:aQyddRYhJK6vaPrADtype: PE32 executable (GUI) Intel 80386, for MS WindowsVersion 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 | Trojan.Generic@ML.81 (RDML:dmSgqcQUbqiJ2pCV4sDmgg) |
| F-Secure | |
| 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?
There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft">2.
Download GridinSoft Anti-Malware.
You can download GridinSoft Anti-Malware by clicking the button below:
Download GridinSoft Anti-MalwareRun 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.
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.
Press “Install” button.
Once installed, Anti-Malware will automatically run.
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.
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.
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 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.
References
- GridinSoft Anti-Malware Review from HowToFix site:
- More information about GridinSoft products:
