.Nano Files Virus - How to Remove It and Restore Data
THREAT REMOVAL

.Nano Files Virus – How to Remove It and Restore Data

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.Nano files virus remove ransomware restore data

This is an article that provides specific details on .Nano files virus as well as a step-by-step guide that may be of help for the removal process of malicious files. The guide also suggests how you could potentially restore corrupted files without paying the ransom.

The crypto virus dubbed .Nano files virus has been recently spotted in the wild by security researchers. It is designed to modify predefined system settings and manipulate various functionalities in order to run a built-in encryption module and corrupt valuable files. Currently, its attack campaigns may target computer users worldwide. In case of infection with this ransomware hackers will attempt to trick you into paying them a ransom for their decryptor.

Threat Summary

Name.Nano files virus
TypeRansomware, Cryptovirus
Short DescriptionA data locker ransomware that corrupts valuable files with the help of sophisticated cihper algorithm. It is associated with the extension .Nano and a ransom message that extorts a ransom payment.
SymptomsImportant files are locked and renamed with .Nano extension. They remain unusable until a ransom is paid.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by .Nano files virus

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Malware Removal Tool

User ExperienceJoin Our Forum to Discuss .Nano files virus.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

.Nano Files Virus – Update January 2019

Update! A decryption tool is now available for .Nano files virus ransomware! The tool was created by the malware researcher Michael Gillespie and can be downloaded from the following link, wrapped inside a .zip archive: AuroraDecrypter.zip. The tool is designed to decrypt the following variants of the cryptovirus: .ONI, .desu, .Aurora, .aurora, .Nano and .Animus.

.Nano Files Virus – Distribution

The infection process with this .Nano files virus is triggered by a payload that may land on the system with the help of various shady techniques. They all aim to trick you into downloading the payload and starting it on your PC.

One of the most preferred ways for ransomware distribution is malwspam. It enables bad actors to send email messages that resemble legitimate ones. These emails may pose as representatives of services you know and use like your internet provider, any logistic company, your bank or even any governmental institution. The text messages usually contain strong call-to-action that urges you to review the content of an attached file or a presented link as soon as possible. And in case that you fall victim to their scam, you could unnoticeably granted the ransomware infection access to your system.

For the sake of your security, whenever you run across a dubious file you could use a free online file extractor and malware scanner to check the security level of the file before you open it on your PC. As the scan results will help you to see whether the uploaded file contains malicious elements or not they could help you to refrain from opening malicious files on your PC.

.Nano Files Virus – Overview

Initially, .Nano files virus should establish all needed malicious files on the system. For the purpose, its payload may be either designed to create some files directly on the system or be set to contact a command and control server to download them. And there are several folders that are likely to store these files:

  • %AppData%
  • %Local%
  • %LocalLow%
  • %Roaming%
  • %Temp%
  • %Windows%

Beware, that cyber criminals may have designed their crypto virus to auto-delete all associated files from the system once it infects all target files. However, all modifications that were implemented during the attack are still impacting the regular system performance. And there is no doubt that you should remove all malicious traits before you can safely use your system again.

The Registry Editor is one of the system components that could be also plagued by the ransomware. Changes of registry keys could enable .Nano files virus to evade detection and ensure its persistent presence on the system. Fortunately, the damage is not permanent and with the help of specialized tools, registries could be fixed fast and easy.

For the ransom extortion, hackers use a specially crafted ransom note. This note is contained in a file called #RECOVERY_FILES#.txt. The main purpose of this message is to present you instructions made by hackers. It is likely to appear on the screen at the end of the attack and here is the text you could read:

Hello!
All your files have been ENCRYPTED
Do you really want to restore your files?
Write to our email – Nano18@airmail.cc
and tell us your unique ID

ID:
[redacted 0x200 bytes in base64]

.Nano Files Virus – Encryption Process

As a data locker ransomware .Nano files virus primarily aims to find predefined types of files stored on the systems it compromises and then encrypts them with the help of a strong cipher algorithm. After modifications of the original code of target files occur the files become inaccessible. In addition, they are all marked with the extension .Nano.

At this point a list of all target file extensions is unavailable but the guesses are that .Nano crypto virus will corrupt all files that belong to one of the following types:

  • Audio files
  • Video files
  • Document files
  • Image files
  • Backup files
  • Banking credentials, etc

Even though that all your important files are encoded by the threat you should avoid paying hackers the demanded ransom before you attempt to restore them with existing alternative data recovery approaches. Furthermore, even a successfully transferred ransom payment does not guarantee that you will be able to recover .Nano files.

Remove .Nano Files Virus and Restore Data

Below you could find how a step-by-step removal guide that may be helpful in attempting to remove this crypto virus. The manual removal approach demands a bit of technical experience and the ability to recognize traits of malware files. Beware that ransomware is a threat with highly complex code that plagues not only your files but your whole system which in turn limits its regular and secure usage.

Make sure also to check the “Restore Files” step listed in the guide below. But before you take any further actions, don’t forget to back up all encrypted files to an external drive in order to prevent their irreversible loss.

Gergana Ivanova

Gergana Ivanova

Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections.

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