The method for decrypting a file depends entirely on which application created it, as this extension is most commonly used by two very different types of software: (for secure data storage) and HTTP Custom (for VPN configurations). 1. VeraCrypt Container Files (Most Common) file is the standard extension for a
encrypted container. These files act as virtual disks that remain locked until "mounted" with the correct password. Standard Decryption (Mounting): application. Select an available drive letter (e.g., M:) from the list. Select File and navigate to your and enter your password when prompted.
Once mounted, the contents appear as a regular drive in your file explorer. Files are "decrypted on the fly" as you use them. Permanent Decryption:
To permanently decrypt the data, mount the volume as described above, copy all files to a regular (unencrypted) folder, and then dismount and delete the original Common Issues:
If the file doesn't show the VeraCrypt icon, you may need to manually associate the extension by right-clicking the file, selecting "Open with," and choosing 2. HTTP Custom VPN Configurations On Android, files are often configuration files for the HTTP Custom
VPN app. These are usually "locked" by the creator to hide server details or payloads. Legitimate Use: These files are meant to be imported directly into the HTTP Custom app to connect to a VPN service. "Decrypting" to View Settings:
If you are trying to view the internal text/settings of a locked config, you typically need a specialized script. Developers have created Python-based tools like hcdecryptor that attempt to reveal the configuration. Requirements: These tools usually require pycryptodome library. You run them via command line: python3 decrypt.py yourfile.hc The app frequently updates its encryption keys (e.g., hc_reborn_4 ), so older decryptors may not work with newer files. 3. Decrypting Without a Password If you do not have the password for a
file, decryption is technically near-impossible due to the high-level encryption used (like AES-256).
Decryption methods for .hc files depend entirely on which application created them. The most common use cases are VeraCrypt (disk encryption) and HTTP Custom (VPN configurations). 1. VeraCrypt Container Files (.hc) how to decrypt hc file
VeraCrypt often uses the .hc extension for its encrypted file containers. These act like virtual disks that remain locked until you "mount" them with the correct credentials.
The Key Requirement: You must have the original password and/or the specific keyfile used during creation. Decryption Process: Open the VeraCrypt application. Select an available drive letter (e.g., Z:). Click Select File and navigate to your .hc file. Click Mount.
Enter the password. If a keyfile was used, click Keyfiles... to locate it.
Once mounted, the file appears as a standard hard drive in File Explorer, allowing you to view and move the contents. 2. HTTP Custom Config Files (.hc)
In the context of Android VPN apps like HTTP Custom, .hc files are encrypted configuration files containing server and payload details.
Standard Method: These files are meant to be imported into the HTTP Custom app, not manually decrypted.
Advanced Decryption (for Developers/Researchers): If you need to view the raw configuration text, specialized tools are required:
hcdecryptor: A Python-based tool available on GitHub can sometimes decrypt these files if they aren't locked with a specific hardware ID. The method for decrypting a file depends entirely
Usage: You typically place your encrypted.hc file in the tool's directory and run a command like python3 decrypt.py encrypted.hc to output a readable .json or text file. 3. Other Possibilities If the file is not related to the above, it may be:
Ransomware: If your files were suddenly renamed to .hc without your input, you may be a victim of ransomware. In this case, do not pay. Check the No More Ransom Project or Avast's Decryption Tools for a free unlocker specific to that strain.
Backup Software: Some specialized backup utilities (like those used for Bitwarden backups) use .hc extensions to signify "hashicorp" or "hardened container" formats.
Do you have the password for this file, or are you trying to recover data from a locked configuration you didn't create? How Do I Decrypt Files Encrypted by Ransomware?
Huawei provides an official decryption tool for HC files, which can be downloaded from their website. This tool requires a valid decryption key, which can be obtained from Huawei's support team.
Step-by-Step Instructions:
Imagine you have a capture file hash.hc with this content:
Administrator::VICTIM:1122334455667788:89d3f6b4c8a2e1f5a6b7c8d9e0f1a2b3:0101000000000000c5c5e5a5b5c5d5e5f5a5b5c5d5e5f5a5
This is a NetNTLMv2 hash (mode 5600). Steps to crack: Huawei provides an official decryption tool for HC
hashcat -m 5600 -a 0 hash.hc rockyou.txt
hashcat -m 5600 -a 3 hash.hc ?u?l?l?l?l?l?d?d
hashcat -m 5600 hash.hc --show
Output: Administrator::VICTIM:...:P@ssw0rd!
Precomputed hash chains are mostly obsolete due to salting. Most modern hashes (bcrypt, SHA512crypt) use salts, making rainbow tables useless.
If you accidentally receive an HC file containing real user hashes, delete it immediately or securely report it to the relevant organization.
john --format=bcrypt --wordlist=rockyou.txt myfile.hc
To show cracked passwords:
john --show myfile.hc
Once you know the encryption type, you can look for a decryption tool. Here are some scenarios:
Run Hashcat with the --identify flag (or use hashid CLI tool):
hashcat --identify myfile.hc
Or manually inspect first few characters:
| Prefix | Hash Type | Hashcat Mode |
|--------|-----------|---------------|
| $2a$, $2b$, $2y$ | bcrypt | 3200 |
| $6$ | SHA512crypt | 1800 |
| $5$ | SHA256crypt | 7400 |
| $1$ | MD5crypt | 500 |
| 32 hex chars (no colon) | MD5 | 0 |
| 32 hex:32 hex | NTLM | 1000 |
| $P$ or $H$ | phpass | 400 |