DynA-Crypt Ransomware - How To Remove?

 

DynA-Crypt crypto-virus is a complicated and a quire unpredictable sample from the ransomware family. Recently, the latter variant took its first steps to starts its career as an awe-inspiring infection. DynA-Crypt cannot be described as any other ransomware infection would: it has some odd characteristics that are necessary to discuss. Let’s start with the features that are pretty common in all comparable threats: DynA-Crypt virus manipulates files with AES encryption and appends a common extension .crypt. It seems to be created by a service, similar to RaaS. In addition to keeping your files hostage, it will also initiate other rather disturbing procedures. It is no news that certain details about ransomware victims are sent to hackers via C&C server. However, DynA-Crypt virus goes to the next level by invading users’ privacy even further. It monitors the victim carefully by extracting information from certain programs and coming into possession of data in other ways.

The first principles of DynA-Crypt ransomware

DynA-Crypt virus will place a combination of separate files, PowerShell scripts that will create a necessary environment for encryption and data-stealing. While this infection remains present in your system, it will viciously invade your privacy. For instance, it can take screenshots of your screen and become aware of what you are doing in an exact moment. DynA-Crypt virus can also be aware of your browsing activity since it will gain insight from your browsing application. It can also monitor who you contact via Skype or snoop on your recordings of system audio. This information won’t necessarily reach hackers straightaway: DynA-Crypt virus will place this collected data into a loot folder, later bringing all of the files together in a file called loot.zip.

DynA-Crypt virus is still a ransomware, meaning that it has to implement encryption and demand a ransom. As we have already indicated, AES encryption will corrupt your files and you won’t be able to run any of it. This variant from ransomware category does not seem to target hundreds of file types, but sticks to the most popular ones. Files that are selected for encryption are to be witnessed with a mark of .crypt after their original extension. But there is a chance to decrypt this corrupted data. The bigger concern is expressed about the tendency DynA-Crypt virus has to delete files without a clear explanation why. In addition to that, files that get deleted by this infection won’t be placed in backups, which means there won’t be a possible ways to retrieve them after deletion.

Decryption of files that DynA-Crypt ransomware ruins has potential to be restored

Similarly to various ransomware viruses, DynA-Crypt infection deletes Shadow Volume Copies so people would not have the luxury of retrieving their files. In exchange for getting back their data in their former state, victims are required to send 50 US dollars in form of Bitcoins (approximately 0.0507 BTC). The Bitcoin wallet that belongs to the hackers, responsible for DynA-Crypt virus, is 1JzypNfNnJRWRDJFxNo5qAt13vYmxqeEz5. Whatever you do, do not pay the required sum. Disregard the fact that the required fee is relatively small. Now, let’s move on to a more positive aspect: files can be decrypted with a free tool. All you have to do is contact researchers from BleepingComputer and they will benevolently provide you with the necessary tool for file-restoration.

Sources for DynA-Crypt ransomware to emerge from

DynA-Crypt ransomware can be reaching devices from various sources: for example, it can reach you via a malicious email letter, featuring a payload of DynA-Crypt virus. If you happen to find questionable messages in your inbox, you are not to be naive enough to open them. Bear in mind that your attitude is supposed to be controlled by a caution. Opening letters from unfamiliar senders should be an action that you despise. In addition to that, hold yourself back from visiting domains that are labeled as potentially dangerous. Websites that feature a lot of unwanted content should not be trusted. Fix other reckless actions that you implement online and stay safe from malware. Ransomware viruses and other various objectionable content can be obtained simply because your activity online is rather sloppy.

DynA-Crypt virus should be detected by Reimage, Spyhunter or Hitman and eliminated without any majors obstacles. Removing ransomware infections is extremely important, especially in the case of this variant, since it can delete more and more files. Manual removal of ransomware is a tricky business and we only recommend you to do it if you have any comparable experience.

How to recover DynA-Crypt ransomware encrypted files and remove the virus

Step 1. Restore system into last known good state using system restore

1. Reboot your computer to Safe Mode with Command Prompt:


for Windows 7 / Vista/ XP
  • Start Shutdown RestartOK.
  • Press F8 key repeatedly until Advanced Boot Options window appears.
  • Choose Safe Mode with Command Prompt. Windows 7 enter safe mode

for Windows 8 / 10
  • Press Power at Windows login screen. Then press and hold Shift key and click Restart. Windows 8-10 restart to safe mode
  • Choose TroubleshootAdvanced OptionsStartup Settings and click Restart.
  • When it loads, select Enable Safe Mode with Command Prompt from the list of Startup Settings. Windows 8-10 enter safe mode

2.Restore System files and settings.

  • When Command Prompt mode loads, enter cd restore and press Enter.
  • Then enter rstrui.exe and press Enter again. CMD commands
  • Click “Next” in the windows that appeared. Restore point img1
  • Select one of the Restore Points that are available before DynA-Crypt virus has infiltrated to your system and then click “Next”. Restore point img2
  • To start System restore click “Yes”. Restore point img3

Step 2. Complete removal of DynA-Crypt ransomware

After restoring your system, it is recommended to scan your computer with an anti-malware program, like Reimage and remove all malicious files related to DynA-Crypt virus. You can check other tools here.


Step 3. Restore DynA-Crypt ransomware affected files using Shadow Volume Copies

If you do not use System Restore option on your operating system, there is a chance to use shadow copy snapshots. They store copies of your files that point of time when the system restore snapshot was created. Usually DynA-Crypt virus tries to delete all possible Shadow Volume Copies, so this methods may not work on all computers. However, it may fail to do so.

Shadow Volume Copies are only available with Windows XP Service Pack 2, Windows Vista, Windows 7, and Windows 8. There are two ways to retrieve your files via Shadow Volume Copy. You can do it using native Windows Previous Versions or via Shadow Explorer.

a) Native Windows Previous Versions

Right-click on an encrypted file and select PropertiesPrevious versions tab. Now you will see all available copies of that particular file and the time when it was stored in a Shadow Volume Copy. Choose the version of the file you want to retrieve and click Copy if you want to save it to some directory of your own, or Restore if you want to replace existing, encrypted file. If you want to see the content of file first, just click Open.


Previous version
b) Shadow Explorer

It is a program that can be found online for free. You can download either a full or a portable version of Shadow Explorer. Open the program. On the left top corner select the drive where the file you are looking for is a stored. You will see all folders on that drive. To retrieve a whole folder, right-click on it and select “Export”. Then choose where you want it to be stored.
Shadow explorer

Step 4. Use Data Recovery programs to recover DynA-Crypt ransomware encrypted files

There are several data recovery programs that might recover encrypted files as well. This does not work in all cases but you can try this:

  • We suggest using another PC and connect the infected hard drive as slave. It is still possible to do this on infected PC though.
  • Download Data Recovery Pro (commercial)
  • Install and scan for recently deleted files. Data Recovery Pro

Note: In many cases it is impossible to restore data files affected by modern ransomware. Thus I recommend using decent cloud backup software as precaution. We recommend checking out Carbonite, BackBlaze, CrashPlan or Mozy Home.

     
 

About the author

 - Main Editor
I have started 2-viruses.com in 2007 after wanting to be more or less independent from single security program maker. Since then, we kept working on this site to make internet better and safer place to use.
 
February 10, 2017 02:26, March 10, 2017 02:06
 
   
 

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