How to Remove Mamona Ransomware and Restore .haes Extension Files?
Introduction
Mamona ransomware has emerged as a distinct and dangerous strain within the ever-evolving ransomware ecosystem. Operating without reliance on a command-and-control server, Mamona presents a challenge that blends stealth, speed, and localized impact. Its approach is deceptively simple—encrypt files, demand payment, and erase evidence. But while its architecture is minimalist, the consequences for victims are anything but.
This article examines Mamona’s technical underpinnings, common indicators of compromise, tactics used to evade detection, and—most importantly—a reliable, field-tested decryptor tool developed specifically for Mamona infections. This decryptor provides businesses and individuals with a genuine path to recovery, avoiding ransom payments and minimizing downtime.
Related article: How to Recover Files Affected by .efxs Ransomware Virus?
Understanding Mamona Ransomware: What Makes It Unique
Offline-First Design
Unlike many ransomware variants that rely on communication with external command-and-control (C2) infrastructures, Mamona operates entirely offline. Once executed, it encrypts files using strong algorithms—typically AES or RSA—without ever contacting the internet or attempting data exfiltration. This design makes it both stealthier and harder to detect using traditional network-monitoring defenses.
Also read: How to Decrypt .satanlock Files and Remove SatanLock V2 Ransomware?
No Exfiltration, Just Extortion
Mamona’s ransom notes aggressively claim that data has been stolen and will be leaked unless the ransom is paid. However, in-depth technical analysis confirms that Mamona does not upload any files externally. These threats are psychological pressure tactics designed to scare victims into compliance.
Encrypted File Extension
Mamona appends .HAes to each encrypted file. For example, invoice.pdf becomes invoice.pdf.HAes. It also drops ransom notes titled README.HAes.txt across multiple directories.
Attack Behavior and Technical Indicators
Observed Tactics, Techniques, and Procedures (TTPs)
- Execution Flow: Launches from a standalone executable.
- Anti-Forensics: Executes cmd.exe /C ping 127.0.0.7 -n 3 > Nul & Del /f /q to create a 3-second delay and then deletes itself to cover its tracks.
- File Handling: Applies custom, high-speed encryption routines; does not use Windows CryptoAPI.
- Impact: Encrypts local files without network interaction; targets desktops, servers, and NAS devices alike.
Indicators of Compromise (IOCs)
- File hashes:
- SHA256: c5f49c0f566a114b529138f8bd222865c9fa9fa95f96ec1ded50700764a1d4e7
- SHA1: 15ca8d66aa1404edaa176ccd815c57effea7ed2f
- SHA256: c5f49c0f566a114b529138f8bd222865c9fa9fa95f96ec1ded50700764a1d4e7
- File artifacts: Multiple README.HAes.txt files.
The ransom note file contains the following message:
~~Mamona, R.I.P!~~
Welcome!
Visit our blog –> –
Chat —> –
Password —>
As you may have noticed by now, all of your files were encrypted & stolen.
—————–
[What happened?]
-> We have stolen a significant amount of your important files from your network and stored them on our servers.
-> Additionally, all files are encrypted, making them inaccessible without our decryption tool.
[What can you do?]
–> You have two options:
–> 1. Pay us for the decryption tool, and:
–> – You can decrypt all your files.
–> – Stolen data will be deleted from our servers.
–> – You will receive a report detailing how we accessed your network and security recommendations.
–> – We will stop targeting your company.
–> 2. Refuse to pay and:
–> – Your stolen data will be published publicly.
–> – Your files will remain locked.
–> – Your reputation will be damaged, and you may face legal and financial consequences.
–> – We may continue targeting your company.
[Warnings]
–> Do not alter your files in any way. If you do, the decryption tool will not work, and you will lose access permanently.
–> Do not contact law enforcement. If you do, your data will be exposed immediately.
–> Do not hire a recovery company. Decrypting these files without our tool is impossible. Each file is encrypted with a unique key, and you need our tool to decrypt them.
Screenshot of the desktop wallpaper of the affected system after Mamona attack
- Command-line artifacts: ping 127.0.0.7 used to evade naive detection scripts.
Visual Summary of Mamona Ransomware:
Targeted Systems and Environments
Windows Servers
Mamona targets critical infrastructure on Windows servers, encrypting databases and essential files. It exploits misconfigured services and unpatched software to gain access.
ESXi Hypervisors
A separate variant of Mamona ransomware is engineered to infect VMware ESXi hosts. This version encrypts entire virtual machines, affecting production environments and backups stored on VM datastores.
Network-Attached Storage (NAS)
Systems like QNAP are frequent targets. Since NAS devices are often accessible over internal networks and hold high-value data, Mamona’s ability to encrypt them extends its impact across organizational storage.
Victim Profile and Data Exposure
Despite the threatening language used in Mamona’s ransom notes, there is no public evidence of victim data being leaked. No confirmed cases of breached organizations have surfaced, and no victim information has appeared on ransomware leak sites or forums. The malware is believed to be targeting smaller businesses or individuals, possibly to avoid drawing the attention of law enforcement or national CERTs.
Detection and Monitoring Strategies
Using Wazuh and Sysmon
Wazuh has released custom rules tailored to detect Mamona’s behavior:
- Rule 100901: Flags the creation of README.HAes.txt
- Rule 100902: Detects the specific ping-and-delete command pattern
By pairing Wazuh with Sysmon, organizations can capture Mamona’s file system behavior and identify suspicious activity even in the absence of external communication.
File Integrity Monitoring (FIM)
Monitoring unauthorized file changes using real-time FIM can help detect Mamona’s encryption patterns, especially when .HAes extensions begin to appear in user directories.
The Mamona Decryptor Tool: A Targeted Solution for Safe Recovery
One of the few confirmed recovery options for Mamona ransomware infections is the Mamona Decryptor Tool, which we offer as a dedicated service. Unlike generic decryptors, this tool is engineered specifically for Mamona’s encryption algorithm, providing victims with a realistic and safe path to data restoration.
Key Features
- No Ransom Required: Recovers files without paying attackers.
- Specifically Engineered: Built to decode the Mamona encryption schema, including files with .HAes extensions.
- Cross-Platform Compatibility: Works on Windows desktops, servers, and NAS systems like QNAP.
- Cloud-Assisted Decryption: Leverages secure online infrastructure to process decryption requests.
- Safe and Secure: Does not damage or overwrite existing files during operation.
How It Works
- Secure Access: Customers contact us via WhatsApp or email to securely receive the tool.
- Admin Launch: Run the decryptor with administrative privileges.
- Victim ID Input: Enter the unique victim ID found in the ransom note.
- Decryption Process: The tool connects to our servers and begins recovering files.
Also read: How to Decrypt Sinobi Ransomware Files (.SINOBI) and Recover Data Safely?
User-Centric Design
- Easy Interface: No technical expertise required to operate.
- Low System Load: Decryption is server-assisted to reduce local CPU/RAM use.
- Money-Back Guarantee: Full refund if the tool is ineffective.
Free Alternatives and Limitations
While the Mamona Decryptor Tool offers a guaranteed solution, other recovery options exist but come with varying degrees of success:
- Shadow Copies: Using vssadmin list shadows to check for recoverable versions.
- System Restore: If enabled, allows rollback to a pre-infection state.
- Data Recovery Software: Tools like Recuva may recover overwritten file fragments.
- Free Decryptors: Occasionally published by security researchers, but often limited by variant and key usage.
These methods should only be attempted if backups or our decryptor tool are unavailable, and they carry a lower success rate.
Recommended Defensive Measures
To prevent future Mamona or similar ransomware attacks:
- Apply security patches across hypervisors, servers, and NAS systems.
- Segment networks to isolate sensitive data zones.
- Implement MFA and restrict RDP access.
- Maintain offsite backups, following the 3-2-1 rule.
- Deploy EDR tools and enable behavioral analytics.
- Train employees to recognize phishing and spoofing attempts.
Conclusion
Mamona ransomware represents a concerning evolution in ransomware deployment—one that prioritizes stealth and speed over brute-force C2 coordination. Its offline operation and psychological ransom tactics make it difficult to detect and easy to underestimate. Yet, with the right tools and preparation, recovery is entirely possible.
Our Mamona Decryptor Tool offers a dependable solution for victims, enabling safe data recovery without negotiation. As ransomware threats continue to grow more sophisticated, cybersecurity professionals must stay ahead by combining proactive defense with responsive recovery strategies.
Frequently Asked Questions
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