What is Win32/KillDisk.NBK infection?

In this post you will certainly locate regarding the definition of Win32/KillDisk.NBK and also its adverse impact on your computer. Such ransomware are a type of malware that is specified by online frauds to demand paying the ransom by a sufferer.

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Most of the cases, Win32/KillDisk.NBK virus will certainly instruct its sufferers to initiate funds transfer for the purpose of reducing the effects of the changes that the Trojan infection has actually introduced to the target’s tool.

Win32/KillDisk.NBK 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;
  • 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;
  • Clears Windows events or logs;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers located on the target’s hard disk drive — so the sufferer can no more utilize the data;
  • Preventing regular 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 networks where Win32/KillDisk.NBK Ransomware Trojans are infused are:

  • By means of phishing emails;
  • As an effect of individual ending up on a resource that hosts a destructive software application;

As quickly as the Trojan is successfully injected, it will certainly either cipher the information on the target’s PC or stop the gadget from working in an appropriate fashion – while also positioning a ransom money note that points out the need for the victims to effect the payment for the function of decrypting the files or restoring the file system back to the initial condition. In most instances, the ransom money note will certainly show up when the customer reboots the COMPUTER after the system has actually currently been damaged.

Win32/KillDisk.NBK circulation channels.

In numerous corners of the globe, Win32/KillDisk.NBK grows by leaps and bounds. Nonetheless, the ransom money notes and techniques of extorting the ransom quantity might vary relying on specific local (regional) setups. The ransom money notes as well as techniques of extorting the ransom money quantity might differ depending on certain regional (local) settings.

Ransomware injection

For example:

    Faulty informs about unlicensed software application.

    In specific locations, the Trojans typically wrongfully report having found some unlicensed applications made it possible for on the target’s tool. The alert then requires the user to pay the ransom.

    Faulty declarations about unlawful material.

    In nations where software piracy is much less preferred, this method is not as efficient for the cyber frauds. Conversely, the Win32/KillDisk.NBK popup alert may falsely claim to be deriving from a police establishment and will certainly report having located youngster porn or various other illegal data on the gadget.

    Win32/KillDisk.NBK popup alert may falsely assert to be deriving from a regulation enforcement establishment as well as will report having situated child pornography or various other unlawful information on the tool. The alert will likewise have a need for the individual to pay the ransom.

Technical details

File Info:

crc32: B4D4D2BD
md5: cb21430f31efffdfb80903feb2b7f58c
name: CB21430F31EFFFDFB80903FEB2B7F58C.mlw
sha1: ce8d085ad32ba1f1d5c4a57218713ac7f8493a4b
sha256: e2472b72cb05ffe0138b90dfd7668d52e9e404ce773614a0a36883fe0aa50e25
sha512: 2d3ea70c5ae6e958be1045431552d4632f5499c408e8224dc639b2120e23b0c44ef0833eee3d9a14d75dae2cc592e83b19bf91b3280a00fa33db904db729e62a
ssdeep: 3072:m0T8L5duTd8vhFKq4VoiwYBIMhYnti6lV9CVSZ3tocGP9+hHJLbTT:m0T8L5duTgFKqm9wYBd2iUiSZ+vchpDT
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
ProductName: Microsoft(R) Windows (R) 2000 Operating System
ProductVersion: 5, 2
FileDescription: System update center
Translation: 0x0409 0x04b0

Win32/KillDisk.NBK also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.Siggen7.8431
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.KillDisk.B
Cylance Unsafe
Zillya Trojan.KillDisk.Win32.188
Sangfor Win.Worm.Autorunvb-7053731-0
CrowdStrike win/malicious_confidence_100% (D)
Cybereason malicious.f31eff
Cyren W32/KillDisk.A!Eldorado
ESET-NOD32 Win32/KillDisk.NBK
APEX Malicious
Avast Win32:Crypt-KOW [Trj]
ClamAV Win.Trojan.KillDisk-3
Kaspersky Trojan.Win32.KillDisk.fx
BitDefender Trojan.Ransom.KillDisk.B
NANO-Antivirus Virus.Win32.Virut-Gen.bwpxnc
ViRobot Trojan.Win32.KillDisk.204800
MicroWorld-eScan Trojan.Ransom.KillDisk.B
Ad-Aware Trojan.Ransom.KillDisk.B
Sophos ML/PE-A
BitDefenderTheta Gen:NN.ZexaF.34628.oq0@aOXBLsii
Emsisoft Trojan.Ransom.KillDisk.B (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.KillDisk.g
Avira TR/Patched.Gen
Microsoft Program:Win32/Wacapew.C!ml
Arcabit Trojan.Ransom.KillDisk.B
GData Trojan.Ransom.KillDisk.B
AhnLab-V3 Trojan/Win32.KillDisk.C1737725
Acronis suspicious
MAX malware (ai score=87)
VBA32 Trojan.KillDisk
Malwarebytes Nimnul.Virus.FileInfector.DDS
Panda Trj/GdSda.A
Rising Malware.Heuristic!ET#91% (RDMK:cmRtazqdWwdvA2haI2P0ff2Cl8Pn)
Yandex Trojan.GenAsa!4kYWNNGQx7E
Ikarus Virus.Win32.Virut
Fortinet W32/Generic.AP.49AFC!tr
AVG Win32:Crypt-KOW [Trj]
Qihoo-360 HEUR/QVM09.0.F6C0.Malware.Gen

How to remove Win32/KillDisk.NBK 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.

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Press “Install” button.

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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 Win32/KillDisk.NBK 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 Win32/KillDisk.NBK you can always ask me in the comments for getting help.

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About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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