How to remove Efji virus and restore encrypted files

That page is dedicated to Efji virus which infects user's computers in different countries of the world, and cyphers the files. In this page you can find important info on Efji's essence, and how to delete Efji from the PC. Except that, we'll explain how to get back the encrypted data, if possible.

Efji ransomware virus

Efji ransomware had infected hundreds of computers in different parts of the world with help of most effective way: false messages with viral attachments. Occasionally scammers use zero-day vulnerabilities to take control over the PC, but big software vendors promptly fix them. After penetration, the virus scans the computer memory to find the folders for encryption and their rough price. Nowadays, any modern virus can cypher image, text, video and audio info in all popular formats. Extra attention is attracted to business documents, because representatives of business are the main objective for criminals. All programs on PC will be safe because criminals are interested only in information. Encryption is made through well-known encryption algorithms, and its complexity is so high that decryption of information with no key is impossible. Such complexity gives base for unbelievable effectuality of ransomware in last years: common user, even having a very high knowledge of the computer, will never be able to restore the data, and will have no choice except paying the ransom. The sole method to decrypt the information is to find the scammer's webpage and get the encryption keys. Some experienced hackers can get these keys through defects in viruse's program code.

The knowledge of computers is very substantial in progressive world, as it helps customer to guard the PC from computer viruses. For ransomware it's most important, as, unlike normal viruses, after deleting ransomware from the computer, the effects of its actions won't vanish anywhere. You easily can minimize the chances to get encrypting virus if you'll follow these regulations:

    • Attentively examine your emails, specifically those messages that have attached files. The most efficient template of fraud letters is the notification about prize winning or package earning. The other efficient sort of scam letters is a "business messages". It is natural to be interested and read the letter even if it's sent to the incorrect address, but remember that a single click on the attached file may cost you lots of time, money and efforts.
    • Don't admit any changes to the system, coming from suspicious software. The simplest manner of data recovery is the recovery through Shadow Copies, and fraudsters have added the removal of those copies into the basic functionality of malware. However deleting of copies needs administrator rights and user's verification. Thus, not accepting alterations from a strange software at the right moment, you will save the opportunity to restore all corrupted information for free.
    • Don't neglect the red flags that your hardware or software shows. Information encrypting is a complex operation that requires a significant amount of system resources. When the malware is starting to work, the CPU speed decreases, and the encryption process can be found in Process Manager. You may catch this moment and unplug the machine before files will be fully encrypted. Naturally, the certain amount of files will be lost, but you will save the other part.

Efji elimination is not solution of the whole issue - it's just a one turn from many before the total data recovery. To recover the data you will have to read the advices in the following part of this entry. To remove the ransomware, user has to launch the machine in safe mode and run the scanning via antivirus. We do not recommend anyone to remove the virus by hand, since it has many security features that can interfere you. Many viruses are able to fully erase corrupted information, or some of it, if somebody attempts to eliminate the program. To avoid this, abide to the instructions below.

Removal instruction

Step 1. Boot into Safe mode

Safe mode

Start -> Msconfig.exe

Safe mode. Step 1

On the tab Boot select Safe boot

Safe mode. Step 2

Step 2. Check Startup folder

Start -> Msconfig.exe ->Disable unknown programs in the Startup tab


Step 3. Check hosts file

Modify hosts file, that located in C:\Windows\System32\drivers\etc\ .

Hosts file.Step 1

Open the file with Notepad and delete suspicious strings.

Hosts file.Step 2

It has to look like this:

Hosts file.Step 3

Step 4. Scan the system with antiviral scanner

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Step 5. Disable Safe mode

Start -> Msconfig.exe ->Disable Safe boot in the Boot tab

Deactivate Safe mode

After uninstalling Efji from the workstation, user has to restore the corrupted data. In fact, this is not about decipherment, because the encrypting algorithms owned by scammers are very complicated. There are the lucky exceptions, but generally data recovery takes lots of time and money. If you choose the by-hand information restore - take a look at this item, which describes all the easiest ways.

To restore information, follow the article about files decryption.

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