Remove .booknish Jigsaw virus (Recover Encrypted Files)

21 May

.booknish Jigsaw virus is the new variant of Jigsw ransomware and this is probably the most dangerous than all the previous rasnsomware of this family. It uses highly advanced encryption algorithm that encrypts that data as well as delete the “Volume Shadow Copies” so that user cannot recover the locked files. Our researches show that it starts controlling the PC by altering its important settings and it can spy on user’s activities in real-time as well. It does a basic scan of PC hard-disk in search of the files and appends .booknish extension on it. This way, the files becomes totally inaccessible and shows error messages when you try to access them.

.booknish Jigsaw virus uses the same delivery tactics as used by its previous versions. It aggressively uses spam email message and social engineering tactics to secretly download its payloads. The payloads are either directly attached to the message or it is hyperlinked in the body contents. On the other hand, it also gets distributed through software installers. These installers could be a System utility, production software, Online media streaming player, games and so on. Further, the payloads may also come as an embedded file with rich text files, spreadsheets, presentation documents and so on.

How Does Files are encrypted by .booknish Jigsaw virus

It uses a powerful .AES cipher to encrypt the targeted files. It can encrypt various kinds of files such as Documents, Archives, Database, Images, Videos, Music and so on. It even tries to encrypt backup files that are stored in the PC hard-disk. After encrypting the files, it starts delivering message that informs about the file encryption. It tries to treat the victims by claiming that the file are deleted in every hour and the entire files will get deleted permanently if the demanded money is not paid without 24 hours.

If your PC gets infected with .booknish Jigsaw virus, it is never recommended to pay the demanded money. This will be totally wastage because the cyber-criminals will not provide the original decryption key even after the money is paid. It is recommended to recover the encrypted files through backup or “Volume Shadow Copies” or using a data recovery tool. However, before using the recovery process, make sure that your PC is free from all kind of malware infection payloads and files.

Remove .booknish Jigsaw virus using powerful Windows Scanner
Download Automatic Removal Tool to eliminate infectious threat

Now, if you don’t want to face all these functions later inside the PC with .booknish Jigsaw virus then you were highly suggested to delete .booknish Jigsaw virus by installing expert’s anti-malware tool inside the PC.

So, what is anti-malware tool?

Anti-malware tool (SpyHunter 4) is a powerful real time protection programs for the Windows Operating System which has been created by Enigma Software Group. It is fully capable to protect the Computer against threat like .booknish Jigsaw virus. However, you can also remove this threat by manual process but it is little bit complexly. Besides that, the manual process requires Computer skill. That means, you need to put some extra effort on your PC in order to remove .booknish Jigsaw virus. As well as, you should have ability to revert back any wrong steps which you have taken in manual process. Otherwise the PC might be goes even worst conditions. On the other hand with the anti-malware tool you don’t requires any extra Computer skill or effort. The Spy Hunter has been designed between experts and novice Users level. Thus, you can easily operate without any worries of harm your Computer. Therefore, in my opinion I would like to prefer anti-malware tool in order to uninstall .booknish Jigsaw virus from Computer.

Complete tutorial to delete .booknish Jigsaw virus using automatic removal method


  1. As you will run anti-malware tool, you will see two options located in middle of screen. Please click on **Scan Computer Now** option in order to proceed to full System scan.step-1
  2. You can also see the error result while scanning of PC.step-2
  3. If you want to scan any particular volume drive or removal pen drives then you can use this Custom Scan option.step-3
  4. Spyware Helpdesk will help you in solving the PC’s errors online (just like Customer services).step-4
  5. System Guard, this functions will helps you to keep your Computer safe from offline threat.step-5
  6. By using Network Sentry Option your browser will safe from online threat and your online activities will be protected by this anti-malware tool.step-6
  7. Al last, by enabling the Scan Scheduler function, your Computer will automatically keep scanned timely by this tool and notifies you if this tool caught any error.step-7

How to get rid of .booknish Jigsaw virus manually?

Eliminate .booknish Jigsaw virus by going through Control Panel:

  1. Click on the Start menu icon located on below left of screen (Right click for Windows 8 and 8.1 Users).control-panel-1
  1. Select Control Panel option > Programs.control-panel-2
  1. The Programs which were installed on PC were located in this list.control-panel-3
  1. Please find out .booknish Jigsaw virus as well as their associated files and click on it to uninstall it.control-panel-4

Remove .booknish Jigsaw virus entries from Windows Registry box:

  1. In order to go to the Windows registry box, please click on Win logo button+ R key together.manual1
  1. Type **regedit** in run dialog box. (If it asks your permission to open this window then click on Yes button)manual2
  1. Registry Box will suddenly open up please go through every location given below in this window in order to find out and delete .booknish Jigsaw virus.manual3
  • HKLM\SOFTWARE\Classes\AppID\.booknish Jigsaw virus.exe
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Toolbar
  • HKEY_LOCAL_MACHINE\SOFTWARE\Google\Chrome\Extensions
  • HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Firefox\Extensions
  • HKEY_CURRENT_USER\Software\Opera Software
    Explorer\Main\Start Page Redirect=
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\virus name
  • HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Winlogon Shell = %AppData%\.booknish Jigsaw virus.exe
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run Random
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Random.

Method to prevent .booknish Jigsaw virus and other similar threats in future

After all, the single biggest factor in preventing a threat like .booknish Jigsaw virus infection is lies upon you. Even you already install anti-malware and you scan your Computer timely, if you don’t be carefully towards your PC while using it. It is obviously to get infected by .booknish Jigsaw virus again. Therefore, you just need vigilance to avoid being affected by threat in future and n some tips and suggestion mention here will hopefully prevent your Computer from infection in coming time.

  • Keep your anti-malware updated.
  • Use strong passwords for valuable information to prevent from hacking.
  • Disable auto-run functions for downloaded files and injected drives.
  • Block auto update from network inside System.
  • Leave it out unknown recipient email attachments.
  • Avoid connecting to open source network like Wi-Fi.
  • Use hardware based firewall in order to protect your System against infections.
  • Deploy DNS protection from automatically get modified.
  • Use ad blocker extension and software in order to surf without getting any additional commercial ads and junk notifications.
  • Do not use any untrusted or unofficial domain for surfing and downloading files inside browser.

Click here to Download Automatic Removal Tool to Uninstall .booknish Jigsaw virus

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