DNR Extension Ransomware – What is it?
DNR Extension Ransomware is released to compromise Windows computers and extort a huge amount from victims. In fact, the ransomware adds '.DNR' extension to certain type of files stored on the computer including Microsoft office files, images, videos, audios, emails and databases. Apparently, this virus is an easy money making tool for the threat actors who believe in cyber crime. Legitimate source says that the ransomware mostly sneaks into your computer via spam emails created using social engineering technique. Upon clicking, suspicious attachments install component of the ransomware in the background. Next what you find is a bunch of enciphered files featuring .DNS suffix.
You can not use or modify them at first place unless you recover them using proper decryption key. We have found that DNR Extension Ransomware drops a ransom note file having scary text along with instruction on how to recover files. Basically, you will be scared after reading the message and convinced to make ransom payment for data recovery. Hold on! Why to pay off ransom while you can recover your files for free. There are few proven alternative methods that can be used to restore your system for data recovery. Since, the ransomware uses sophisticated military grade cipher encoding your file, it will create a little problem while data recovery but you can recover your files.
Recovering Files Without Paying ransom to DNR Extension Ransomware Developers
- Free Decryptor: usually AV vendors like Emsisoft and TrendMicro release free decryptor against newly released sophisticated ransomware. Though, you can check out their official sites to find out free Decryptor.
- System Restore: if you have created System restore point before the DNR Extension Ransomware infection then you can restore your PC to the date when it wasn't under attack of the virus. It means you will be able to access all of your files.
- Data Recovery Software: a professional data recovery program can also help you to recover your enciphered files.
How to Safeguard Computer?
We recommend you to only use multi-layered security provider software to safeguard your computer against ransomware attacks. If you are using a demo or trial version of security software then your computer will be vulnerable. Our advise is to avoid using such versions. Finally, DNR Extension Ransomware removal is a must, make use of the given guide wisely:
Steps To Remove DNR Extension Ransomware From Operating System
Procedure 1: Reboot Your Operating System In Safe Mode
How To Start Computer In Safe Mode with Networking (Win XP/Vista/7)
- Please restart your system. Just before the Windows start, continuously press F8 on your keyboard. Now, you will be presented with Advanced Options Menu.
- Select Safe Mode with Networking from the selection options. Please use the keyboard’s arrow up or down to navigate between selections and then hit Enter to proceed.
Method To Start Win 8 In Safe Mode With Networking
- Restart your Operating System and as soon as it begins to start, kindly please press Shift+F8 keys.
- Instead of seeing the Advance Boot Options, Win 8 will display the Recovery Mode. So, continue with the given instructions until you reach the Safe Mode function.
- Tap on ‘See advanced repair options’.
- Then after, click on Troubleshoot.
- Next, select Advanced options.
- On the next window, choose Windows Startup Settings.
- At last, click on the Restart button. Now, Windows 8 will restart and boot into the Advanced Boot Option wherein you can run the computer in Safe Mode with Networking.
Procedure 2: ShadowExplorer can be really helpful in restoring your file encrypted by DNR Extension Ransomware
When DNR Extension Ransomware attacks it generally tries to Remove all shadows copies which is stored in your computer. But there are chances that DNR Extension Ransomware is not able to Remove the shadow copies everytime. So you need to restore the original files using shadow copies.
Follow these simple steps to restore original files through shadowexplorer
- Download shadowexplorer link from http://www.shadowexplorer.com/downloads.html.
- Install it on your system.
- Now you need to open shadowexplorer and select c: drive on left panel.
- Now choose at least one month ago date from date field.
- Now you need to go to the folder which have encrypted filed.
- Now right click the encrypted files.
- You need to export the original files and choose a destination to store them.
Procedure 3: System restore can be another method to restore your encrypted files
- Open start >> All Programs >> Accessories >> System tools >> System Restore.
- Click next to go to restore window.
- See what restore points are available for you , choose a restore point at least 20 to 30 days back.
- Once selecting click next.
- Choose disk c: (it must be selected by default).
- Now click next and system restore will start working and will be able to finish in few minutes.
Procedure 4: Another method for recovering your decrypted files are by using file recovery software
If above methods are not successful you can go for file recovery software. It can be helpful in recovering your encrypted files as DNR Extension Ransomware first makes a copy of original files and then encrypt it. After encryption it Removes the original files. So there is high probability that these file recovery software can help you in recovering your original files. You can find links to some best file recovery software below.
- Recuva : you can download from http://www.piriform.com/recuva/download
- Testdisk: you can download from http://www.cgsecurity.org/wiki/TestDisk_Download
- Undelete 360: you can get it from http://www.undelete360.com/
- Pandora Recovery: you can download from http://www.pandorarecovery.com/
- Minitool partition recovery: you can get it from http://www.minitool.ca/