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An empty password hash corresponds to a blank password.
If you suddenly see many of your personal files (photos, documents, videos) with an extra .HC extension at the end, and you also find a ransom note named _README_HELLCAT_.txt on your desktop or in folders, your system has likely been infected with HellCat ransomware.
Sometimes Hashcat fails due to format issues. Use this Python script to clean the HC file:
If you secured the file with external keyfiles, check the Use keyfiles box, click the Keyfiles... button, and add the required files. Step 6: Complete Decryption and Access Files
If you want to remove the encryption permanently so that the files are no longer trapped inside the HC container, follow this method:
A .hccapx file is a binary file that contains a WPA/WPA2 4-way handshake, which is captured when a client device connects to a Wi-Fi access point. This file is the key to cracking the password. Hashcat modes -m 2500 (for .hccapx files) and -m 16800 (for PMKID attacks) are now deprecated and replaced by the unified mode -m 22000 , which uses the .22000 hash format. So, you're likely to work with .hccapx files, but you may want to convert them to the newer .22000 format for best results.
Clone the repository from GitHub.
Solution: If the file header is damaged, you cannot mount it normally. Go to VeraCrypt, select the file, click , and choose Restore Volume Header . You can attempt to restore it using the embedded backup header inside the file, provided you still know the correct password. Can You Decrypt an HC File Without the Password?
VeraCrypt containers do not actually require a specific file extension. However, many users add .hc (short for VeraCrypt) to easily identify them.
You can now drag, drop, copy, or edit files exactly like a normal hard drive. How to Permanently Decrypt an HC File
hashcat -m 1000 -a 1 myfile.hc wordlist1.txt wordlist2.txt
Use the file explorer to navigate to the location of your HC file.
Without the correct password or keyfile, the file looks like random data, making brute-force decryption practically impossible with modern computing power. Prerequisites for Decryption To successfully decrypt and open an HC file, you will need:
Place your .hc file in the same directory as decrypt.py and run:
When you are done working with your files, go back to the VeraCrypt window, select the mounted volume (e.g., E: ), and click the "Dismount" button. This will re-lock the container, and the drive will disappear from your system until you mount it again with the password.
Check the box that says . Enter your password and click OK . Allocate Adequate Processing Time
An empty password hash corresponds to a blank password.
If you suddenly see many of your personal files (photos, documents, videos) with an extra .HC extension at the end, and you also find a ransom note named _README_HELLCAT_.txt on your desktop or in folders, your system has likely been infected with HellCat ransomware.
Sometimes Hashcat fails due to format issues. Use this Python script to clean the HC file:
If you secured the file with external keyfiles, check the Use keyfiles box, click the Keyfiles... button, and add the required files. Step 6: Complete Decryption and Access Files
If you want to remove the encryption permanently so that the files are no longer trapped inside the HC container, follow this method:
A .hccapx file is a binary file that contains a WPA/WPA2 4-way handshake, which is captured when a client device connects to a Wi-Fi access point. This file is the key to cracking the password. Hashcat modes -m 2500 (for .hccapx files) and -m 16800 (for PMKID attacks) are now deprecated and replaced by the unified mode -m 22000 , which uses the .22000 hash format. So, you're likely to work with .hccapx files, but you may want to convert them to the newer .22000 format for best results.
Clone the repository from GitHub.
Solution: If the file header is damaged, you cannot mount it normally. Go to VeraCrypt, select the file, click , and choose Restore Volume Header . You can attempt to restore it using the embedded backup header inside the file, provided you still know the correct password. Can You Decrypt an HC File Without the Password?
VeraCrypt containers do not actually require a specific file extension. However, many users add .hc (short for VeraCrypt) to easily identify them.
You can now drag, drop, copy, or edit files exactly like a normal hard drive. How to Permanently Decrypt an HC File
hashcat -m 1000 -a 1 myfile.hc wordlist1.txt wordlist2.txt
Use the file explorer to navigate to the location of your HC file.
Without the correct password or keyfile, the file looks like random data, making brute-force decryption practically impossible with modern computing power. Prerequisites for Decryption To successfully decrypt and open an HC file, you will need:
Place your .hc file in the same directory as decrypt.py and run:
When you are done working with your files, go back to the VeraCrypt window, select the mounted volume (e.g., E: ), and click the "Dismount" button. This will re-lock the container, and the drive will disappear from your system until you mount it again with the password.
Check the box that says . Enter your password and click OK . Allocate Adequate Processing Time
