What is Efji Ransomware

Efji Ransomware is computer virus-extortioner, with a global impact, that belongs to the largest family of STOP/Djvu Ransomware. It was developed by cyber-racketeers to blackmail users worldwide. Malware blocks access to user’s documents, photos, databases, music, mail, archives by encrypting them with AES encryption algorithm and demands ransom: from $490 to $980 in BitCoins. The modification of the virus, that we are investigating now adds .efji extensions to affected files and has many other characteristic signs. For example, all latest versions of STOP Ransomware use _readme.txt ransom note file with typical message. The particular version under research today, uses following e-mail addresses: helpmanager@mail.ch and restoremanager@airmail.cc. Here are the contents of the file it creates on the desktop and in the folders with encrypted files:

Efji Ransomware (.efji extensions)
ATTENTION!
Don't worry, you can return all your files!
All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can get and look video overview decrypt tool:
hxxps://we.tl/t-X1SjYYHgBL
Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that's price for you is $490.
Please note that you'll never restore your data without payment.
Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.
To get this software you need write on our e-mail:
helpmanager@mail.ch
Reserve e-mail address to contact us:
restoremanager@airmail.cc
Your personal ID:
{random-44-character-alphanumeric-id}

Developers of Efji Ransomware promise to send a decryption tool in exchange for $980 (or for $490, if the ransom is paid within 72 hours). There is no reason to trust the hackers and succumb to intimidation. There is a chance to return your data and decrypt .efji files without paying the ransom. You need to remove malware from your computer using one of the certified tools provided in the article. Then you can attempt to decrypt files using STOP Djvu Decryptor or by manual instructions, described below. Often users successfully recover some information using file recovery software, and we found one of the best tools available on the market and prepared an easy tutorial below. In case all methods failed for you we recommend keeping and storing all affected files with help of CryptoSearch utility until there will be way to restore them. Read this guide carefully to remove Efji Ransomware and decrypt .efji files in Windows 10, Windows 8, and Windows 7.

  1. Download Efji Ransomware Removal Tool
  2. Get decryption tool for .efji files
  3. Recover encrypted files with Stellar Data Recovery Professional
  4. Restore encrypted files with Windows Previous Versions
  5. Restore files with Shadow Explorer
  6. How to protect from threats like Efji Ransomware

How Efji Ransomware infected your PC

Virus modifies “hosts” file to block Windows updates, downloading antivirus programs, and visiting sites related to security news or offering security solutions. Efji Ransomware comes along with AZORult trojan, which was initially created to steal logins and passwords. The process of infection also looks like installing Windows updates, the malware shows a fake window, that mimics the update process.

fake windows update from Efji Ransomware

It uses rdpclip.exe to replace a legal Windows file and to launch an attack on a computer network. After encrypting the files, the encrypter is deleted using the delself.bat command file. Efji Ransomware virus is propagated via spam attack with malicious e-mail attachments and using manual PC hacking. Can be distributed by hacking through an unprotected RDP configuration, fraudulent downloads, exploits, web injections, fake updates, repackaged, and infected installers. Virus assigns a certain ID with the victims, that is used to name those files and supposedly to send decryption key. Great tools to protect against Efji Ransomware are: Emsisoft Anti-Malware and Malwarebytes Anti-Malware.

Download Efji Ransomware Removal Tool

Download Removal Tool

To remove Efji Ransomware completely, we recommend you to use WiperSoft AntiSpyware from WiperSoft. It detects and removes all files, folders and registry keys of Efji Ransomware and prevents future infections by similar viruses.

Alternative Removal Tool

Download SpyHunter 5

To remove Efji Ransomware completely, we recommend you to use SpyHunter 5 from EnigmaSoft Limited. It detects and removes all files, folders, and registry keys of Efji Ransomware. The trial version of SpyHunter 5 offers virus scan and 1-time removal for FREE.

How to remove Efji Ransomware manually

It is not recommended to remove Efji Ransomware manually, for safer solution use Removal Tools instead.

Efji Ransomware files:

_readme.txt
rdpclip.exe
delself.bat
{randomname}.exe

Efji Ransomware registry keys:

no information

How to decrypt and restore .efji files

Use automated decryptors

Download STOP Djvu Decryptor from EmsiSoft (.efji variations)

IMPORTANT: Read this detailed guide on using STOP Djvu Decryptor to avoid file corruption and time wasting.

STOP djvu ransomware decryptor from emsisoft

STOP Djvu Decryptor is able to decrypt .efji files, encrypted by Efji Ransomware. This tool was developed by EmsiSoft. It works in automatic mode, but in most cases works only for files encrypted with offline keys. Download it here:

Download STOP Djvu Decryptor

Dr.Web Rescue Pack

Famous antivirus vendor Dr. Web provides free decryption service for the owners of its products: Dr.Web Security Space or Dr.Web Enterprise Security Suite. Other users can ask for help in the decryption of .efji files by uploading samples to Dr. Web Ransomware Decryption Service. Analyzing of files will be performed free of charge and if files are decryptable, all you need to do is purchase a 2-year license of Dr.Web Security Space worth $120 or less. Otherwise, you don’t have to pay.

If you are infected with Efji Ransomware and removed it from your computer, you can try decrypting your files. Antivirus vendors and individuals create free decryptors for some crypto-lockers. To attempt to decrypt them manually you can do the following:

Use Stellar Data Recovery Professional to restore .efji files

stellar data recovery professional

  1. Download Stellar Data Recovery Professional.
  2. Click Recover Data button.
  3. Select type of files you want to restore and click Next button.
  4. Choose location where you would like to restore files from and click Scan button.
  5. Preview found files, choose ones you will restore and click Recover.
Download Stellar Data Recovery Professional

Using Windows Previous Versions option:

  1. Right-click on infected file and choose Properties.
  2. Select Previous Versions tab.
  3. Choose particular version of the file and click Copy.
  4. To restore the selected file and replace the existing one, click on the Restore button.
  5. In case there is no items in the list choose alternative method.

Using Shadow Explorer:

  1. Download Shadow Explorer program.
  2. Run it and you will see screen listing of all the drives and the dates that shadow copy was created.
  3. Select the drive and date that you want to restore from.
  4. Right-click on a folder name and select Export.
  5. In case there are no other dates in the list, choose alternative method.

If you are using Dropbox:

  1. Login to the DropBox website and go to the folder that contains encrypted files.
  2. Right-click on the encrypted file and select Previous Versions.
  3. Select the version of the file you wish to restore and click on the Restore button.

How to protect computer from viruses, like Efji Ransomware, in future

1. Get special anti-ransomware software

Use BitDefender Anti-Ransomware

bitdefender anti-ransomware

Famous antivirus vendor BitDefender released a free tool, that will help you with active anti-ransomware protection, as an additional shield to your current protection. It will not conflict with bigger security applications. If you are searching complete internet security solution consider upgrading to full version of BitDefender Internet Security 2018.

Download BitDefender Anti-Ransomware

2. Back up your files

idrive backup

As an additional way to save your files, we recommend online backup. Local storages, such as hard drives, SSDs, flash drives, or remote network storages can be instantly infected by the virus once plugged in or connected to. Efji Ransomware uses some techniques to exploit this. One of the best services and programs for easy automatic online backup is iDrive. It has the most profitable terms and a simple interface. You can read more about iDrive cloud backup and storage here.

3. Do not open spam e-mails and protect your mailbox

mailwasher pro

Malicious attachments to spam or phishing e-mails are the most popular method of ransomware distribution. Using spam filters and creating anti-spam rules is good practice. One of the world leaders in anti-spam protection is MailWasher Pro. It works with various desktop applications and provides a very high level of anti-spam protection.

Download MailWasher Pro

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