Urgent Assistance Required: Files Encrypted with .nobu Extension

I hope this message finds you well. I’m reaching out to share an urgent situation regarding a laptop owned by my teacher, which has recently encountered a significant issue. After attempting to download a few PDFs from the internet, his device has fallen victim to malware, resulting in the alarming transformation of all files to a “.nobu” extension.

The Situation Unfolds

Upon investigating, I discovered numerous suspicious programs listed in the Task Manager. Recognizing the gravity of the situation, I immediately ran Malwarebytes. However, due to the absence of a backup, restoring the system to a previous state is not an option. This leads me to ask: is there any reliable method to remove the “.nobu” extension from his files? Any assistance would be highly valued, and I can provide screenshots if needed for clarity.

Updates on the Situation

Critical Files in Jeopardy: Among his most vital files are Eagle projects used for designing printed circuit boards (PCBs). Regrettably, it appears that the ransomware has also compromised the software itself, rendering it inoperable and unresponsive.
Encryption Status: I’ve learned that the encryption might be reliant on an online key. I attempted using Emsisoft for decryption, but unfortunately, it yielded no results.
Community Support: I want to extend my heartfelt thanks to everyone who has offered help so far. My teacher recently saw this post on my phone and was genuinely touched by the level of support from the community.
Background Context: Just to clarify, my teacher has a background in electronics and works in an IT firm. Teaching is actually a side gig for him. He primarily uses the laptop for PCB design and programming tasks, including Arduino projects.
Visual Evidence: I’ve uploaded some visuals captured on my phone, as I struggled to take proper screenshots. You can view them here:
Desktop Screenshot
Ransomware Note

Final Thoughts

I intend to explore all available decryption software before considering a complete format of the laptop. If anyone has suggestions or insights on how to tackle this issue effectively, please do share. Your expertise could make a significant difference for my teacher, who relies on this device for his

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