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KillBot virus. How to remove? (Uninstall guide)

removal by Ugnius Kiguolis - - | Type: Ransomware

KillBot virus threatens to encrypt files and asks to reinstall Windows

The image of KillBot virus

KillBot (also know as KillBot_Virus or KillBot.Prime ransomware) is a ransomware-type cyber infection that threatens to encrypt files using AES cryptography. However, the recent research data claims that malware is unable to do that. Though, it doesn’t mean that developers won’t add this feature in the future.

Malware is executed from KILLBOT.PRIME.exe which can be dropped on the system when a user opens a malicious email attachment. Ransomware might make several changes to the system in order to boot with Windows and launch data encryption.

However, KillBot virus does not seem to perform the primary task of ransomware properly. As we have already mentioned, malware does not encrypt files yet. However, it can deliver a lock screen message where it is stated differently.

The strange thing about KillBot_Virus is that it does not ask to pay the ransom in Bitcoins, and tells that there’s no way to restore corrupted files. However, authors of malware give virus removal instructions:

Your files cannot be restored, however there are
some steps to follow if you don’t want it on your
computer.

Step 1: Please get a windows reinstallation CD and reinstall windows on your computer.

Step 2: Get a powerful antivirus software and update it to the last version..

Please do everything as it was written if you want to get your PC back

</Killbot Virus>

However, we can ensure that reinstalling Windows is not needed after KillBot ransomware attack. Though, scanning the system with reputable security software is definitely required. We recommend terminating the virus using Reimage; however, feel free to use any other legitimate software.

The malware should not block installation or access to security software. However, if you find some difficulties with KillBot removal, you should follow the guide given at the end of the article. These instructions will help you to disable the virus and launch automatic elimination.

Please, do not try to remove KillBot manually. Nevertheless, it does not actually encrypt files; it’s still a complex cyber threat that may have injected malicious code into the legit system processes. Thus, detect and eliminate them correctly is very hard for regular home computer users. Hence, do not try to delete the virus yourself because it may lead to the irreparable damage to the system.

Spam emails might delivers ransomware straight to your inbox

Currently, security experts cannot establish the prime distribution method for this virus. However, the probability of it spreading just like all the other ransomware is quite high. In most cases, dangerous ransomware spreads via malicious spam emails.[1]

The attachment is usually in the form of .doc, .txt, .xml, .html and similar file format which does not seem harmful. Thus, users do not suspect anything bad and open it.

Security specialists from uirusu.jp[2] remind other methods used for crypto-malware distribution:

  • malware-laden ads that might be placed on legit or high-risk websites;
  • bogus software updates or downloads;
  • cracked programs;
  • exploit kits.

Thus, users should be aware of these methods because numerous ransomware viruses are lurking on the web and looking for inattentive user’s clicks. However, it’s also important to install reputable antivirus and create important data backups that are crucial in case ransomware hits your device.[3]

KillBot virus removal guide

Immediate Killbot removal is required because ransomware can be updated soon and actually encrypt your files. Additionally, installation of malware might lead to various privacy-related issues because the system becomes vulnerable.

In order to remove Killbot ransomware, you may need to reboot the system to Safe Mode with Networking as shown below. Then you will be able to install and run malware removal tool and clean your PC. For the elimination, we recommend using one of these professional programs: Reimage, Malwarebytes Malwarebytes or Plumbytes Anti-MalwareNorton Internet Security.

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall KillBot virus. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
More information about this program can be found in Reimage review.
Press mentions on Reimage
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Plumbytes Anti-Malware
We have tested Plumbytes Anti-Malware's efficiency in removing KillBot virus (2018-01-18)
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We have tested Malwarebytes's efficiency in removing KillBot virus (2018-01-18)

To remove KillBot virus, follow these steps:

Remove KillBot using Safe Mode with Networking

These instructions will help you to disable the virus and run automatic elimination:

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove KillBot

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete KillBot removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove KillBot using System Restore

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of KillBot. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that KillBot removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove KillBot from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

If KillBot virus managed to encrypt your files, you can recover them using backups as soon as the malware is eliminated from the system. However, if you haven't created backups of your files, please try our suggested alternative recovery methods.

If your files are encrypted by KillBot, you can use several methods to restore them:

Method 1. Data Recovery Pro

This software helps to restore corrupted or accidentally deleted files.

Method 2. Windows Previous Versions feature

If System Restore was enabled before KillBot_Virus attack, you can follow these steps and copy previously saved versions of needed files.

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

Method 3. Use ShadowExplorer

KillBot.Prime ransomware does not seem to delete Shadow Volume Copies, so you can use ShadowExplorer for data recovery.

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

KillBot decryptor is not available.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from KillBot and other ransomwares, use a reputable anti-spyware, such as Reimage, Malwarebytes Malwarebytes or Plumbytes Anti-MalwareNorton Internet Security

About the author

Ugnius Kiguolis
Ugnius Kiguolis - The mastermind

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References