Nvram ransomware removal instructions
What is Nvram?
Discovered by GrujaRS, Nvram is a ransomware, belonging to the CrySis/Dharma malware family. It operates by encrypting data and demanding payment (ransom) for its decryption. During the encryption process, all files are retitled with a unique ID number, developers' email address and the ".nvram" extension. Therefore, a file named for example, "1.jpg" would appear as something like - "1.jpg.id-007D851E.[email@example.com].nvram", and so on. Afterwards, a text file ("FILES ENCRYPTED.txt") is created on the desktop and Nvram also displays a pop-up window.
Both the pop-up and the text file contain a ransom note. The latter informs affected users that their data has been locked and if they want to 'return' it, they are to write to the developers of Nvram. The pop-up is more detailed; it states that all of the files have been encrypted - to decrypt them, victims are to establish contact via the email address listed. Written in the subject/title of the victim's letter must be their ID number (generated individually, present in the pop-up and in the filename of every encrypted file). The size of the demanded payment is not stated, it will depend on how quickly users contact the cyber criminals behind Nvram. However, the desired currency is told to be Bitcoin cryptocurrency. There are web-links provided, which lead to instructions on how to procure Bitcoins. Once the transaction is finished, victims are promised decryption tools/software. As proof of their ability to recover the data, the criminals offer to decrypt one file free of charge. This test file must be no larger than 1Mb (non-archived) and contain no valuable information, such as backup, database, large excel sheet and similar. The note warms against renaming the encrypted files and against manual decryption, using third party software - else, users risk permanent data loss. Unfortunately, it is true that encryptions of most ransomware-type programs cannot be "cracked" with free tools. Usually, only the software that initially encrypted the file is capable of decrypting them. Despite this, it is expressly advised against meeting ransom demands and/or communicating with cyber criminals. Often, even though victims pay - they do not receive the necessary tools to decrypt their files, which leaves them beyond repair. To prevent Nvram from encrypting more data - this malware must be removed immediately. However, removal will not restore already compromised files. The only possible solution is restoring them from a backup. Given, if one was made prior to the infection and stored in a different location.
Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:
Ransomware infections are similar on two accounts - they all involve data encryption and ransom demands. For example, Major, Hakbit, NEMTY REVENGE 2.0, Rooster865qq are a few examples of malicious software akin to Nvram. There are some key differences, such as the cryptographic algorithm they use (symmetric or asymmetric) and the size of the ransom. The payments commonly range between three-digit and four-digit sums (in USD). Digital currencies (mostly cryptocurrencies) are preferred by cyber criminals, as transactions of them are difficult/impossible to trace. Unless a ransomware is still in development and/or has certain flaws, decryption without the interference of its developers - is impossible. To ensure data safety, it is recommended to keep backups in unplugged storage devices and or remote servers. It is best to store several backup copies is separate locations.
How did ransomware infect my computer?
|Threat Type||Ransomware, Crypto Virus, Files locker|
|Encrypted Files Extension||.nvram (files are also appended with a unique ID number and cyber criminals' email address)|
|Ransom Demanding Message||FILES ENCRYPTED.txt and text within the pop-up window|
|Cyber Criminal Contactfirstname.lastname@example.org|
|Detection Names||Avast (Win32:Trojan-gen), BitDefender (Generic.Ransom.DCRTR.9A1B9DC1), ESET-NOD32 (A Variant Of Win32/Filecoder.Crysis.R), Kaspersky (HEUR:Trojan.Win32.Generic), Full List Of Detections (VirusTotal)|
|Symptoms||Cannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). A ransom demand message is displayed on your desktop. Cyber criminals demand payment of a ransom (usually in bitcoins) to unlock your files.|
|Distribution methods||Infected email attachments (macros), torrent websites, malicious ads.|
|Damage||All files are encrypted and cannot be opened without paying a ransom. Additional password-stealing trojans and malware infections can be installed together with a ransomware infection.|
To eliminate Nvram virus our malware researchers recommend scanning your computer with Spyhunter.
How to protect yourself from ransomware infections?
Irrelevant and/or suspicious emails, should not be read. Any files attached within suspect mail must never be opened; doing so can infect the system. Users are encouraged to only use official and verified download channels. Software should be activated and updated with tools/functions provided by legitimate developers; illegal activation tools ("cracks") and third party downloaders are considered to be threat to device/user safety and strongly advised against use. It is highly recommended to have a dependable anti-virus/anti-spyware suite installed and kept up-to-date. Said software is to be used to perform regular system scans and for the elimination of detected threats/issues. If your computer is already infected with Nvram, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.
Text presented in Nvram ransomware's pop-up window:
All your files have been encrypted!
All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail email@example.com
Write this ID in the title of your message 007D851E
You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files.
Free decryption as guarantee
Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.)
How to obtain Bitcoins
The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price.
Also you can find other places to buy Bitcoins and beginners guide here:
Do not rename encrypted files.
Do not try to decrypt your data using third party software, it may cause permanent data loss.
Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.
Screenshot of Nvram's text file ("FILES ENCRYPTED.txt"):
Text presented in this file:
all your data has been locked us
You want to return?
write email firstname.lastname@example.org or
Screenshot of files encrypted by Nvram (".nvram" extension):
Nvram ransomware removal:
Instant automatic removal of Nvram virus:
Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of Nvram virus. Download it by clicking the button below:
- What is Nvram?
- STEP 1. Nvram virus removal using safe mode with networking.
- STEP 2. Nvram ransomware removal using System Restore.
Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.
Video showing how to start Windows 7 in "Safe Mode with Networking":
Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.
Video showing how to start Windows 8 in "Safe Mode with Networking":
Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.
Video showing how to start Windows 10 in "Safe Mode with Networking":
Log in to the account infected with the Nvram virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.
If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.
Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":
1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.
2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.
3. Next, type this line: rstrui.exe and press ENTER.
4. In the opened window, click "Next".
5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the Nvram ransomware virus infiltrating your PC).
6. In the opened window, click "Yes".
7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining Nvram ransomware files.
To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of Nvram are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.
To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.
If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.
To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as Nvram ransomware.
Note that Windows 10 Fall Creators Update includes a "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites, and Desktop folders.
Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.
HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:
Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:
- The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.
Other tools known to remove Nvram ransomware: