Data get encrypted? No worry, here is detail data retrieval processes
Q: Sir, I could not access many of my personal documents and media files inside PC. When I click on them, a Window pop-up appears on the screen showing ransom demand message. What would I do get the files in its previously available state? How to recover ransomware infected files? Is there a way?
Scenario is that, your system gets infected with some ransomware type virus. By the infection of a ransomware virus, you will get locked out of your system. A short message on the desktop or on some other places on the system starts to appear on the screen.
The short message informs that the PC has been infected with some ransomware virus which encrypts important files stored. It instructs that there is a need to run the decrypt software to get the files in their original accessible condition.
This type of viruses designed by Cybercriminals is used to generate quick revenue. The cyber crooks blackmail their victims through way to pay ransom fee as a ransom to get their files. However, there is no any guarantee that the victims get their files even after they fulfill all their ransom demand.
The ransowmare is designed just to generate illicit money. The ransom payment may encourage the scammers to create several more ransomware. By this year, it is expected that these crooks have managed to compromise $5 billion users’ PC.
Encryption process- short details
Encryption process is better explained by it.usf.edu. According to it, “encryption is the process of encoding information so that only parties with access to it can read it”. The ransomware infects a PC and thereafter runs a set of process. These processes lead to creating a copy of the original file. These copies are encrypted by using some encryption algorithms (RSA, AES or other Cryptographic or military grades algorithms). Thereafter, the original files are deleted. After completing the encryption process, the ransomware generates a decryption key.
Various types of ransomware
- Encrypting ransomware – It blocks the system stored files and demands ransom payment to provide the affected user with the unique key to decrypt the locked files. Some viruses of this type are Crypto Locker, Wannacry, Locky, cryptoWall etc.
- Locker ransomware – This type of ransomware lock the person access to the Window OS and so the data access on it. Here, the files are actually not encrypted. The ransom fee is asked to access to the infected device. Some examples of this type of ransomware are Police-themed ransomware or Win locker.
- MBR ransomware – It is a type of locker ransomware. MBR or Master Boot Record is a section of hard drive enables OS to boot up. The ransomware attack on the boot process due to which the boot process fails to complete. Examples of this type of virus are Satana, petya etc.
How to recover ransomware infected files back to their original accessible condition
As it has already discussed what has happened to your files. The question might arise is there a way to get the files in their working condition ever again? How to recover ransomware infected files?
In this article, we have done our 100% to provide you every possible guideline that will help you in retrieving your encrypted files gets once again in the working condition. The solutions here provided might not give 100% solution. However, our practice through this is to let you know about various methods so that you can try. So, without much delaying, let’s start:
- Use data recovery software:
This is the safest method for the getting the encrypted files back to their original accessible condition. This method is focus of original files that are deleted by the ransomware and for this method to be successful, there is some condition. You should avoid formatting the hard drive as what exactly the victims do in opposite. Many victims simply copy their encrypted files to external drives and reboot their Window. This activity will decrease the chance of the get back the encrypted files.
There is several data recovery software available you should use to get your files back. The decryption tool is created by Cyber Security researchers after decoding the encryption code of a particular ransomware. Many an old ransomware are decoded and their decryption tool is available.
- Use Window backup to restore the files
Many a ransomware does not delete backup files and the backup has been set up and is active and working. If the same is the case in yours as well, you can retrieve the files back again. Window Backup is instructed to use to recover the files encrypted by those ransomware which are not complicated or well-made.
- Use Volume Shadow Copies
When you are looking for the Window backup and you find that the back is not active and working, you might lose your hope. In this situation, Volume Shadow copies will help you get your files back if the backups are not deleted. Many a ransomware is not capable of disables the Shadows Copies of the OS and so this method will help you in such a case.
- Try with plugging the hard drive to another PC
Some ransomware viruses do not encrypt the files stored on the system rather damage the Master Boot record and prevent the access to the starting Window and so called lockscreen ransomware. If yours is the case that the ransomware locks the access from starting Window, this approach will help you to retrieve the files back to your system.
- Use network sniffer to retrieve the files
This is theoretical process and would require much comprehensive knowledge to use it. The approach is simple-it works at a time when the ransomware makes a call to the Cyber criminals to send the actual decryption key. You should have much knowledge to understand how to analyze the incoming and ongoing communications from any sniffer programs.
- Use decryptor of other ransomware viruses
If the PC gets an infection, the first thing you should do before thinking how to recover ransomware infected files is the type of ransomware that encrypts your files. When the ransomware which attacks you PC is a part of a ransomware family whose decryption tool is already available, you can get your files by using this tool.
How to safe from ransomware attack?
Handle emails and their attachments from any unknown sender very carefully. Spam email attachment is the main source of the ransomware intrusion. It will be better to curb from opening any email, since it is very difficult to detect whether a particular email is suspicious or not. Use reliable security solutions and keep the system Watcher “ON” on your system. In case of the PC get attacked, you should report it to the Local Law enforcement agency first. For the safety, it is necessary to maintain a regular backup of all your data, especially the critical one, so that ransomware encrypted files will have an option to be retrieved.
Several Do’s after ransomware attack
There are several tricky methods Cybercriminals use to proliferate in their ransomware threat. Once you get trapped, all your files get locked. Take the following action in such a case very immediately:
- Switch off the system, but do not use the shutdown mode
- Disconnect the LAN network
- Restart the PC and install the official tool form Microsoft which closes the used vulnerabilities in the attack
- Scan the PC with some latest antivirus tool
- Take a backup of the data