Dołączył: 28 Sie 2018
|Wysłany: 10 Wrz 2019 10:37 Temat postu: How to Decrypt A File Without Password / Key?
|Generally, files were encrypted by virus attack will cause the file path or drive inaccessibly. Then how to decrypt a file without password, key or certificate?
Why ransomeware loves to encrypt files?
We've known many cases form Internet and our customers, the SD card or the computer hard drive gets kidnaped by ransomware, it usually encrypts the important files of yours and force you to pay Bitcoin to their account to unlock the files.
EFS encrypt Tool on Windows 7/8/10
Normally if we would like to keep secrets on the privacy files, most of the users will consider EFS encrypt tool, EFS is short name for Encrypting File System, which Microsoft Windows encrypt tool that provides filesystem-level encryption, the technology enables files to be transparently encrypted to protect confidential data with physical access to the computer.
However, EFS will need a file encryption key, we called FEK to access the files, generally, it allows user to export the pfx certificate and you'd better save carefully to safe path to make sure the files can be accessed.
How to decrypt a file after lost EFS certificate?
You'll then have to know first how the virus kidnap the files.
Make copies of the files or folders >> Encrypt the copies >> Delete Original files or folders
By knowing how the ransonware works, we can then try primary to use Bitwar Data Recovery software, which is a free trial data recovery software has powerful functions that allows users to recover original files or folders which deleted by virus or Trojan.