Removal Guide for One Ransomware (.One File Virus)

In a case of One ransomware infection, the computer is plagued by malicious files that are designed to modify system settings and create other virus files. Primarily One ransomware’s purpose is to encrypt certain files with strong encipher algorithm and extort victims for a ransom payment. The malicious suffix .one is a trait that a file is encrypted and currently unusable while the file Recupere seus arquivos aqui.txt is hacker’s message. Portuguese speaking users are currently likely to be the primary target of One ransomware. Know how to tackle the problem by yourself.

Damages Caused By One Ransomware

One ransomware is activated once a malicious executable (EXE) file is running on the computer. The code of this file is likely to be designed to initiate changes of some system settings and create or download new malicious files that support the infection process. Then One ransomware may counterfeit legit computer processes like svchost.exe and Chrome.exe and run unnoticeably on the system. This allows it to perform its further malicious activities so next, it launches a drive scan process searching for certain file types.

The threat has a predefined list of file extensions in its code that includes all files that are to be encrypted during the infection. Victims may witness MS Office documents, text files, music, images, videos, different kinds of project files, archives, databases and other sensitive data encryption. The built-in encryption module in One ransomware performs a data transformation rendering it unusable until the unique decryption key is applied. All corrupted files receive the malicious extension .one as a part of their names.

Further system damages that may be witnessed during One ransomware infection concern Windows Registry modifications. By adding custom registry value strings, the One crypto virus can run malicious EXE files on every system startup. The following registry subkeys may be attacked:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

Another registry modifications can result in automatic displaying of Recupere seus arquivos aqui.txt file. It is a ransom note that serves as cyber criminals’ communication mean. The message is written in Portuguese and the whole note reads:

Seus arquivos foram criptografados.
Essa sua chave: *****
Para recupera-los entre em contato pelo nosso email: [email protected] enviando sua chave.
Responderemos seu email em at 24h.

With the help of online translation services it becomes clear that the English meaning of the text sounds like this:

Your files have been encrypted.
This is your key: *****
To recover them please contact us by email: [email protected] by sending your key.
We will reply your email at 24h.

There is no information about the demanded ransom, however, it is belied to be in Bitcoin currency and may vary around 0.2 and 1.0+ BTC. For the sake of all victims security, we advise them to avoid any negotiations with the hackers and disregard their instructions.

Ways of One Ransomware Distribution

Beware of all emails that you receive in the inbox. Various attack techniques allow easy access to your email address as well as information that you value, used services, the circle of friends, place of working and so on. Even if you think that the email is sent by a legitimate source or a friend, think twice before you interact with any presented links or attachments. Hackers are cunning and know how to trick you into believing that nothing is wrong with that link or that file in the email and not only.

A link itself may land you on a compromised website that they hacked due to misconfigured security policies or on a malicious clone of a legitimate one. Then attack techniques like drive-by download can drop the One ransomware malicious payloads on your computer without asking you for any permissions.

An attachment may contain files that have injected malware code that will be automatically activated once you open the file.

Malvertising is another technique that may be used for the dissemination of malicious links through online advertisement campaigns.

The malicious One ransomware payload may also be distributed via social and file share networks like Facebook, Twitter, and Reddit.

Remove One Ransomware and Restore .One Files

As long as One ransomware is on your system, it will employ its malicious files and limit the regular usage of the computer. So there is no doubt that you should remove it completely from the system before further actions.

After the removal process, you can try alternative data recovery approaches to restore some .one encrypted files. But first, you need to backup all corrupted files. Otherwise, they may be irreversibly damaged if something goes wrong during the recovery process.

Summary of One Ransomware


One Ransomware

File Extension


Easy Solution
You can skip all steps and remove One ransomware ransomware with the help of an anti-malware tool.

Manual Solution
One ransomware ransomware can be removed manually, though it can be very hard for most home users. See the detailed tutorial below.

Spam emails, malicious URLs, malicious attacments, exploit kits, freeware.

One ransomware Ransomware Removal

STEP I: Start the PC in Safe Mode with Network
This will isolate all files and objects created by the ransomware so they will be removed efficiently.

    1) Hit WIN Key + R


    2) A Run window will appear. In it, write “msconfig” and then press Enter
    3) A Configuration box shall appear. In it Choose the tab named “Boot
    4) Mark “Safe Boot” option and then go to “Network” under it to tick it too
    5) Apply -> OK

Or check our video guide – “How to start PC in Safe Mode with Networking

STEP II: Show Hidden Files

    1) Open My Computer/This PC
    2) Windows 7

      – Click on “Organize” button
      – Select “Folder and search options
      – Select the “View” tab
      – Go under “Hidden files and folders” and mark “Show hidden files and folders” option

    3) Windows 8/ 10

      – Open “View” tab
      – Mark “Hidden items” option


    4) Click “Apply” and then “OK” button

STEP III: Enter Windows Task Manager and Stop Malicious Processes

    1) Hit the following key combination: CTRL+SHIFT+ESC
    2) Get over to “Processes
    3) When you find suspicious process right click on it and select “Open File Location
    4) Go back to Task Manager and end the malicious process. Right click on it again and choose “End Process
    5) Next you should go folder where the malicious file is located and delete it

STEP IV: Remove Completely One ransomware Ransomware Using SpyHunter Anti-Malware Tool

Manual removal of One ransomware requires being familiar with system files and registries. Removal of any important data can lead to permanent system damage. Prevent this troublesome effect – delete One ransomware with the help of a malware removal tool.

SpyHunter anti-malware tool will diagnose all current threats on the computer. By purchasing the full version, you will be able to remove all malware threats instantly. Additional information about SpyHunter / Help to uninstall SpyHunter

STEP V: Repair Windows Registry

    1) Again type simultaneously the Windows Button + R key combination
    2) In the box, write “regedit”(without the inverted commas) and hit Enter
    3) Type the CTRL+F and then write the malicious name in the search type field to locate the malicious executable
    4) In case you have discovered registry keys and values related to the name, you should delete them, but be careful not to delete legitimate keys

Further help for Windows Registry repair

STEP VI: Recover Encrypted Files

    1) Use present backups
    2) Use professional data recovery software

      Stellar Phoenix Data Recovery – a specialist tool that can restore partitions, data, documents, photos, and 300 more file types lost during various types of incidents and corruption.
    3) Using System Restore Point

      – Hit WIN Key
      – Select “Open System Restore” and follow the steps


    4) Restore your personal files using File History

      – Hit WIN Key
      – Type “restore your files” in the search box
      – Select “Restore your files with File History
      – Choose a folder or type the name of the file in the search bar


      – Hit the “Restore” button

STEP VII: Preventive Security Measures

    1) Enable and properly configure your Firewall.
    2) Install and maintain reliable anti-malware software.
    3) Secure your web browser.
    4) Check regularly for available software updates and apply them.
    5) Disable macros in Office documents.
    6) Use strong passwords.
    7) Don’t open attachments or click on links unless you’re certain they’re safe.
    8) Backup regularly your data.

SpyHunter anti-malware tool will diagnose all current threats on the computer. By purchasing the full version, you will be able to remove all malware threats instantly. Additional information about SpyHunter / Help to uninstall SpyHunter

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Author : Gergana Ivanova

Gergana Ivanova is a computer security enthusiast who enjoys presenting the latest issues related to cyber security. By doing thorough researches and sharing them on BestSecuritySearch, she hopes that more victims of malware infections will be able to secure their corrupted computer systems properly and eventually recover lost files.

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