Solara Ransomware Decryptor

Solara ransomware is a malicious program built on the Chaos ransomware framework. It encrypts files, appends the .solara extension, and leaves a ransom note titled read_it.txt. Our cybersecurity research team has dissected Solara’s encryption methods and engineered a premium Windows-based decryptor. This tool is designed to minimize risks, prevent further damage, and maximize recovery accuracy while operating in a secure environment.

---

Overview of Our Decryption Process

Our recovery system uses a layered approach combining flaw exploitation, victim-specific key identification, and cloud verification.

1. Victim-Specific Key Matching – We identify the encryption instance by cross-referencing data from the ransom note.
   
2. Universal Variant Recovery – For cases where the ransom note is missing, our premium decryptor can handle recognized Solara builds.
   
3. Safe Testing Mode – Operates in read-only mode before starting any changes, ensuring no accidental corruption.
   
4. Cloud-Backed Verification – Uses blockchain-based comparison to ensure decrypted files match their original form.
   

---

Urgent Actions for Users Affected by Solara

If your files have been renamed with the .solara extension, it’s important to take immediate, cautious steps:

• Disconnect the Device from All Networks – This helps stop the ransomware from encrypting more files or spreading to connected systems.
  
• Preserve All Encrypted Data and Notes – Keep the ransom note and all affected files intact for recovery analysis.
  
• Avoid Restarting or Formatting – Reboots may trigger additional scripts; formatting could make recovery impossible.
  
• Consult a Professional Team – Expert assistance improves your chances of successful decryption without paying.
  

---

Solara Ransomware Data Recovery – Available Options

Solara’s Chaos-based encryption makes recovery challenging without the right tools. However, victims can try both free methods and paid recovery services depending on their situation.

---

Free File Restoration Methods

1. Chaos Family Decryptors
Since Solara was built from the Chaos ransomware family, some older Chaos decryptors may work on outdated Solara variants.

• Functionality – These tools reverse early Chaos encryption flaws such as predictable key generation. If the Solara strain matches these weaknesses, recovery is possible.
  
• Drawbacks – Newer Solara versions have improved encryption, making older decryptors ineffective. Using the wrong tool can cause incomplete recovery or damage files.
  

2. Restoring from Backups

• Functionality – Restoring from secure offline or cloud backups is the most reliable recovery method. The infected system is cleaned, the OS reinstalled, and safe data restored.
  
• Drawbacks – If backups were connected during the attack, they may also be encrypted. Always confirm backup integrity before restoration.
  

3. Windows Shadow Copies & Previous Versions

• Functionality – Windows may store earlier versions of files through “shadow copies.” These can be accessed using tools like ShadowExplorer.
  
• Drawbacks – Solara usually deletes these copies. This works only if the deletion process failed.
  

4. Disk Forensics & Data Carving

• Functionality – Forensic recovery tools can retrieve unencrypted fragments directly from disk sectors.
  
• Drawbacks – Works best on simple file formats such as images or text. Complex files may be incomplete or unusable.
  

---

Paid Recovery Solutions

1. Paying the Criminals
Although possible, sending the ransom is strongly discouraged.

• How It Works – Victims send 50 PLN via Paysafecard (Poland) or $5 in Bitcoin as per the ransom note instructions. The attacker promises a decryptor linked to the victim’s ID.
  
• Risks – There’s no guarantee of receiving a working tool, and payments help sustain cybercrime. Some campaigns are incomplete, meaning no working decryptor exists.
  

2. Using Ransomware Negotiators

• How It Works – Professionals attempt to negotiate a lower ransom and verify the attacker’s ability to decrypt before payment.
  
• Risks – Negotiators charge high fees and success is not guaranteed.
  

3. Our Proprietary Solara Decryptor
We have developed a specialized decryptor tailored for Solara’s Chaos-based encryption.
Steps for Using Our Decryptor:

1. Prepare at least one .solara file and the read_it.txt ransom note.
   
2. Disconnect the system from all networks.
   
3. Install the decryptor tool on the infected or a clean system.
   
4. Run the software as administrator.
   
5. Select the folder with encrypted files.
   
6. Enter the victim ID from the ransom note.
   
7. Begin the decryption process and monitor progress.
   
8. Check recovered files for integrity before using them normally.
   

---

Risks of Paying the Ransom

The ransom note requests Paysafecard (50 PLN) or $5 in Bitcoin. However, payment is risky because:

• There’s no assurance the decryptor will work.
  
• Some versions are unfinished, so no valid tool may exist.
  
• Payments may be illegal in some countries.
  

---

How Solara Operates – Technical Breakdown

File Encryption – Files are renamed with the .solara extension (e.g., document.docx → document.docx.solara).
Ransom Note – Contains taunting messages blaming victims for triggering an “anti-crack” system, with instructions for payment.

Attack Lifecycle & Techniques

Initial Infection Methods

• Phishing emails carrying malicious attachments.
  
• Trojanized software downloads and fake installers.
  
• Drive-by downloads from compromised websites.
  
• Infected torrents and P2P file-sharing networks.
  

Execution & Persistence

• Disables antivirus tools.
  
• Copies itself into multiple directories.
  
• Executes only after specific “anti-crack” triggers are met.
  

Encryption Process

• Targets non-system files across all drives.
  
• Uses Chaos ransomware’s AES/RSA hybrid encryption.
  
• Drops ransom notes in multiple locations.
  

Evasion Techniques

• Deletes shadow copies using vssadmin.
  
• Creates registry entries for startup persistence.
  
• Often operates offline without contacting command-and-control servers.
  

Utilities Used

• Built-in Windows commands (taskkill, wmic, vssadmin).
  
• PowerShell scripts for automation.
  
• File packers and crypters for obfuscation.
  

---

Indicators of Compromise (IOCs)

• Encrypted File Extension: .solara
  
• Ransom Note: read_it.txt
  
• Detection Examples:
  
  • Avast: Win32:MalwareX-gen [Ransom]
    
  • Microsoft: Ransom:MSIL/FileCoder.AD!MTB
    
  • ESET: Variant Of MSIL/Filecoder.Chaos.A
    

---

Victim Impact Analysis

Countries Affected by Solara – Geographic distribution of known infections.
Industries Targeted – Sectors experiencing the most attacks.
Attack Timeline – Chart of Solara activity over time.

---

Prevention Tips

• Download software only from official sources.
  
• Avoid opening attachments from unknown senders.
  
• Keep OS and applications updated.
  
• Use antivirus with real-time protection.
  

---

Conclusion

While no universal free decryptor exists for Solara, recovery is possible through backups, free Chaos tools for older variants, or professional decryptors. Victims should isolate infected systems, preserve evidence, and seek trusted recovery help instead of funding cybercriminals.