Click the "Select File" button above, and choose your GDCB file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert GDCB to another file type
To convert GDCB Encrypted files to another format, you need Bitdefender Decryptor or other Encoded software.
Convert a file to GDCB
To convert other file formats to the "Ransomware Encrypted Data" file type, you need software like Bitdefender Decryptor or a similar tool.
About GDCB files
A .GDCB file is not a standard document or media file. It is a file that has been maliciously encrypted by the GandCrab ransomware family. When a computer is infected, the malware targets user files, encrypts their contents, and appends the .GDCB extension to the original filename.
There is no legitimate software designed to create or open these files. Victims usually need a specific decryption tool, such as those provided by Bitdefender or the No More Ransom project, depending on the exact GandCrab version.
The main disadvantage of this format is catastrophic data loss. The file is a locked container encrypted with complex cryptographic algorithms. You cannot simply rename the file extension or use a standard converter to regain access to your data. Users desperately need to convert these files back to their original target formats (like DOCX, JPG, or PDF), but this is impossible without the unique decryption key.
This file format is intentionally difficult to open or convert. It is a closed, proprietary, and maliciously obfuscated format. Explain clearly why standard online converters fail to process it: the underlying data structure is destroyed until mathematically decrypted.
Convert.Guru analyzes your GDCB file, detects the exact format, and lets you read the text inside.
FAQ
If you want to convert GDCB file to BASE64, HEX, BIN, ENC, CRYPT, AES, DES, RSA, PGP, GPG, ASC or KEY, you can use Bitdefender Decryptor or similar software from the "Ransomware Encrypted File Storage" category. In the File menu, look for Save As… or Export….
To convert CER, BIN, PEM, DER, KEY, P7S, PFX, ENC, P12, BASE64, P7B or HEX files to GDCB, try Bitdefender Decryptor or another comparable tool in the "Ransomware Encrypted File Storage" category.
The GDCB Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our GDCB converter.