What is a .EFJI file?
The file extension .EFJI indicates that a file has been encrypted and altered by a specific type of malicious software known as EFJI ransomware. This type of file originally could be any common file such as a document, photo, or another data file, but once affected by EFJI ransomware, it becomes inaccessible. The ransomware adds ".efji" to the existing file extension, resulting in a new, compound extension like ".pdf.efji" or ".jpg.efji".
**Description of EFJI Ransomware Encrypted File:** When a file is encrypted by EFJI ransomware, it means that the ransomware has locked the contents of the file, making it unreadable without a special decryption key. The purpose of this action is to coerce the victim into paying a ransom to get the decryption key and regain access to their files. For example, a file originally named "report.pdf" would be renamed to "report.pdf.efji" after encryption.
**Programs to Open .EFJI Files:** Typically, files with the .efji extension cannot be opened by standard software programs because they are encrypted. The primary method to potentially restore these files is through a system restore if backups were made before the infection, or by using specialized decryption tools if available. However, these methods may not guarantee the recovery of all files.
**More Information on EFJI Ransomware:** EFJI ransomware is a variant of the STOP family, which is known for encrypting files and demanding a ransom. It was first reported in October 2020 when users noticed their files were being encrypted and renamed. The ransomware leaves a ransom note named "_readme.txt" in directories that contain encrypted files. This note typically provides instructions on how to contact the attackers and pay the ransom to recover the files.
**How Computers Get Infected by EFJI Ransomware:** Infections from EFJI ransomware often occur when users download and install software that seems legitimate but is actually bundled with malicious applications, including adware and malware. These deceptive software bundles are a common method used by attackers to spread ransomware.
In summary, a .EFJI file is a locked and unusable file created by EFJI ransomware, which encrypts and renames files to force victims into paying a ransom. Opening these files typically requires removing the ransomware and potentially using decryption tools, but success is not guaranteed.
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