Dcrtr ransomware removal instructions
What is Dcrtr?
First discovered by Michael Gillespie, Dcrtr is a ransomware-type virus that stealthily infiltrates systems and encrypts stored data. During the process, Dcrtr adds the ".[email@example.com].dcrtr" extension to the name of each compromised file. For instance, "sample.jpg" is renamed to "sample.jpg.[firstname.lastname@example.org].dcrtr". From this point, using files becomes impossible. After successfully encrypting files, Dcrtr creates a text file ("ReadMe_Decryptor.txt"), placing a copy in every existing folder.
The new text file contains a message informing victims of the encryption and instructing them what to do next. The instructions are simple: to decrypt files, victims must contact cyber criminals via an email address provided. Criminals then provide further instructions, however, to receive them, victims must pay a ransom. It is currently unknown whether Dcrtr uses symmetric or asymmetric cryptography, however, no matter which cryptography is used, decryption requires a key generated uniquely for each victim. Criminals store these keys on a remote server, allowing them to make ransom demands for their release. The cost is currently unknown and supposedly depends on how quickly victims make contact. Cyber criminals typically demand $500-1500 in Bitcoins (or other cryptocurrency). Users are also allowed to attach five selected files (up to 10MB in total). Criminals then supposedly decrypt and return the files, supposedly as a 'guarantee' that decryption is possible. In fact, these cyber criminals can never be trusted. Research shows that these people often ignore victims, once payments are submitted. Therefore, paying typically gives no positive result and users are scammed. As well as losing their money, victims will support cyber criminals' malicious businesses. Therefore, we strongly advise you to ignore all requests to contact these people or pay any ransoms. There are currently no tools capable of restoring files encrypted by Dcrtr and you can only restore everything from a backup.
Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:
There are dozens of ransomware-type viruses sharing similarities with Dcrtr. For example, Twist, BlackRuby, Payerranso, MindLost, and many others. Although these viruses are developed by different cyber criminals, they have identical behavior - they encrypt data and make ransom demands. In most cases, viruses such as Dcrtr have just two major differences: 1) type of used cryptography, and; 2) cost of decryption. Research shows that, unfortunately, most of these viruses employ algorithms that generate unique decryption keys. Therefore, restoring files manually without involvement of developers (contacting these people is not recommended) is impossible, unless the malware is not fully developed or has certain bugs/flaws (e.g., the key is stored locally, hard-coded, or similar). Ransomware presents a strong case for maintaining regular data backups, however, backup files must stored on a remote server or unplugged external storage to prevent the ransomware encrypting them as well.
How did ransomware infect my computer?
How to protect yourself from ransomware infections?
The main reasons for computer infections are poor knowledge and careless behavior, and the key to safety is caution. Never open files received from suspicious email addresses. These emails should be deleted without reading. We also strongly recommend that you download your applications from official sources only using direct download links. Third party downloaders/installers are likely to include rogue software. Therefore, keep installed applications updated and use a legitimate anti-virus/anti-spyware suite. Criminals proliferate malware via fake updaters, and therefore you should update applications using implemented functionality or at least tools provided by the official developer.
Text presented in Dcrtr ransomware text file ("ReadMe_Decryptor.txt"):
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
In case of no answer in 24 hours write us to theese e-mails: firstname.lastname@example.org
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 5 files for free decryption. The total size of files must be less than 10Mb (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:
Screenshot of files encrypted by Dcrtr (".[email@example.com].dcrtr" extension):
Dcrtr ransomware removal:
- What is Dcrtr?
- STEP 1. Dcrtr virus removal using safe mode with networking.
- STEP 2. Dcrtr 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 Dcrtr 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.
Download remover for Dcrtr virus
1) Download and install 2) Run system scan 3) Enjoy your clean computer!
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 Dcrtr 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 Dcrtr 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 Dcrtr 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 Dcrtr 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 as well as 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 Dcrtr ransomware: