Nanocrypt Ransomware: Complete Guide to Decrypt .ncrypt Files

Nanocrypt is a dangerous file-encrypting ransomware that targets Windows users. Once activated, it encrypts personal files using a strong RSA/AES encryption algorithm and appends the “.ncrypt” extension to each file name. The malware then demands a $50 Bitcoin ransom for decryption, threatening permanent data loss if not paid within three days. Nanocrypt creates a ransom note in a README.txt file, instructing victims to contact the attackers through Discord. This guide provides detailed information about the threat and offers steps to remove the malware and potentially recover your files.

What is Nanocrypt Ransomware?

Nanocrypt is a file-encrypting malware discovered by security researchers in 2025. It specifically targets Windows users and locks their personal files using strong RSA/AES encryption algorithms. After the encryption process, files become inaccessible, with their original extensions modified to include “.ncrypt” (for example, “photo.jpg” becomes “photo.jpg.ncrypt”).

Like most ransomware, Nanocrypt aims to extort money from victims by holding their data hostage. The attackers demand a payment of $50 in Bitcoin in exchange for a decryption tool. They also attempt to pressure victims by imposing a three-day deadline, claiming that failure to pay will result in permanent system damage and data loss.

Threat Type:	Ransomware, Crypto Virus, File Locker
Detection Names:	Avast (Win32:MalwareX-gen [Trj]), ESET-NOD32 (A Variant Of Generik.MZRPJQN), Kaspersky (HEUR:Trojan-Ransom.MSIL.Crypren.gen), Microsoft (Program:Win32/Wacapew.C!ml)
Encrypted File Extension:	.ncrypt
Ransom Note:	README.txt
Ransom Amount:	$50 in Bitcoin
Contact Method:	Discord (l_bozo2691)
Distribution Methods:	Infected email attachments (macros), torrent websites, malicious advertisements, fake software updates
Potential Damage:	File encryption, data loss, privacy violations, installation of additional malware

How Nanocrypt Ransomware Works

Understanding the infection and encryption process can help you better protect your system. Here’s how Nanocrypt typically operates:

File Encryption Process

Nanocrypt targets numerous file types that typically contain valuable user data:

• Documents: .doc, .docx, .xls, .xlsx, .ppt, .pptx, .pdf, .rtf, .txt
• Images: .jpg, .jpeg, .png, .bmp, .gif, .tiff, .svg
• Audio/Video: .mp3, .mp4, .wav, .avi, .mov, .mkv
• Archives: .zip, .rar, .7z, .tar, .gz
• Database files: .sql, .accdb, .mdb, .dbf
• Other personal files: .psd, .ai, .indd, .dwg, .csv

Once a file is encrypted, it cannot be opened with its associated application. For example, a JPG image will display as corrupted, and documents will show as unreadable or damaged.

Ransom Note Contents

The README.txt ransom note created by Nanocrypt typically contains the following information:

Technical Indicators of Compromise (IoCs)

IoC Type	Value	Notes
File Hash (SHA-256)	2a874da9e23bb9a91e0ef1838240517d3113171ef6238216a6f839ff27e7b3ef	Main ransomware executable
Encrypted File Extension	.ncrypt	Appended to original file extensions
Ransom Note	README.txt	Created in each affected directory
Contact Method	Discord: l_bozo2691	Communication channel with attackers
Detection Names	Win32:MalwareX-gen [Trj], ESET-NOD32 (A Variant Of Generik.MZRPJQN), Kaspersky (HEUR:Trojan-Ransom.MSIL.Crypren.gen), Microsoft (Program:Win32/Wacapew.C!ml)	How different antivirus products identify this threat

Steps to Remove Nanocrypt Ransomware

If your computer has been infected with Nanocrypt ransomware, follow these steps to remove the malware from your system:

1. Disconnect from Networks

First, disconnect your computer from all networks (Wi-Fi, Ethernet) to prevent potential spread to other devices and to stop any ongoing communication with attacker servers:

1. Physically unplug any Ethernet cables
2. Disable Wi-Fi by turning off your wireless adapter (you can use the airplane mode in Windows)
3. If on a business network, notify your IT security team immediately

2. Remove Nanocrypt Using Antivirus Software

To safely remove the Nanocrypt ransomware from your system without causing further damage, we recommend using a professional antimalware tool like Trojan Killer:

Step	Instructions
1. Download and Install	Download Trojan Killer from the official website (link above) Run the installer and follow the on-screen instructions Launch the program after installation completes
2. Perform a Full System Scan	From the main interface, click on “Full Scan” to begin a comprehensive system check The scan will examine your system for Nanocrypt ransomware and other potential threats Wait for the scan to complete – this may take some time depending on your system
3. Review and Remove Threats	After the scan completes, review the list of detected threats Make sure all Nanocrypt-related items are selected for removal Click “Remove Selected” to clean your system
4. Restart Your System	After the cleaning process is complete, restart your computer Some malware components can only be fully removed after a system restart

3. File Recovery Options

Unfortunately, files encrypted by Nanocrypt cannot be decrypted without the unique decryption key held by the attackers. However, there are several approaches you can try to recover your files:

1. Use backup files: If you have backups on an external drive, cloud storage, or other backup system, restore your files from these sources
2. Check for Shadow Copies: Windows may have created Volume Shadow Copies of your files before encryption. You can try to restore previous versions by right-clicking on a file or folder, selecting “Properties,” then the “Previous Versions” tab
3. Data recovery software: In some cases, specialized data recovery software may be able to recover deleted original versions of files from your hard drive
4. Check for free decryptors: Monitor security blogs and forums for potential decryption tools that might be developed for Nanocrypt in the future

How to Protect Your Computer from Ransomware

Preventing ransomware infections is far easier and more effective than trying to recover after an attack. Here are essential preventive measures:

Protection Method	Description
Regular Backups	Create regular backups of important files using the 3-2-1 rule: 3 copies, on 2 different media types, with 1 copy stored offsite (like cloud storage). Keep external backup drives disconnected when not in use.
Keep Software Updated	Regularly update your operating system, antivirus, browsers, and all applications. Many ransomware attacks exploit known vulnerabilities that have already been patched.
Use Strong Security Software	Install reputable antivirus/anti-malware software with real-time protection features. Consider using Trojan Killer for comprehensive protection.
Be Cautious with Email	Never open attachments or click links in emails from unknown senders. Be suspicious of unexpected emails, even if they appear to come from trusted sources.
Avoid Pirated Software	Never download pirated software, “cracks,” or key generators. These are frequently used to distribute malware, including ransomware.
Use Strong Passwords	Create unique, complex passwords for all accounts and consider using a password manager to keep track of them securely.
Enable Multi-Factor Authentication	Wherever possible, enable MFA to add an extra layer of security to your accounts.
Disable Macros	Disable macros in Microsoft Office applications or set them to only run from trusted sources.
User Education	Learn to recognize phishing attempts, suspicious websites, and other social engineering tactics.

Creating Data Backups

One of the most effective ways to protect against ransomware is to maintain regular backups of your important files. Here are several options for backing up your data:

• External Hard Drives: Copy your data to an external drive and keep it disconnected when not in use
• Cloud Storage: Services like Microsoft OneDrive, Google Drive, or Dropbox offer encrypted storage options
• Network Attached Storage (NAS): For home or small business use with proper security configuration
• Specialized Backup Solutions: Dedicated backup software with ransomware protection features

Microsoft OneDrive offers an excellent option for Windows users to protect their files. OneDrive includes built-in ransomware detection and file recovery features:

1. Set up automatic backup for your Documents, Pictures, and Desktop folders
2. Take advantage of version history to restore files to pre-encryption states
3. Use OneDrive’s ransomware detection and recovery features

Similar Ransomware Threats

Nanocrypt is just one of many ransomware threats currently active. Similar threats include:

• Lilith RAT – Sophisticated remote access trojan with file encryption capabilities
• Sarcoma Ransomware – Dangerous file-encrypting malware with similar extortion techniques
• LockBit 4.0 Ransomware – Advanced ransomware family known for targeting business and enterprise systems

Frequently Asked Questions

Conclusion

Nanocrypt ransomware represents a serious threat to personal and business data security. Its ability to render files inaccessible through encryption can lead to permanent data loss and financial damage. The most effective approach to ransomware threats is prevention through comprehensive security practices, regular system updates, and—most importantly—maintaining regular backups of your important data.

If you’ve already been infected, focus on removing the malware and exploring recovery options rather than paying the ransom. For persistent or complex infections, specialized security tools like Trojan Killer can provide effective solutions by not only removing the ransomware but also strengthening your system against future attacks.

Remember that the landscape of ransomware threats is constantly evolving, with new variants appearing regularly. Staying informed about current threats and maintaining strong security practices is your best defense against these sophisticated attacks.