Djvu VirusRansomwareRemoval Guide

Nacro Virus Removal Guide (+Decrypt .nacro files)

Nacro – Ransomware

Nacro is a destructive software working as typical ransomware. Michael Gillespie, the widely known malware researcher, very first discovered this new name in the DJVU ransomware family.

Nacro was created for the sole purpose to encrypt all popular file types. Rationally, as quickly as the encryption is successfully achieved, the users are unable to get access to them. Nacro virus includes its own “.nacro” to all the encrypted files. For example, the file “price_list.xls”, when crypted by Nacro, will be entitled as “price_list.xls.nacro”. Once the encryption is achieved, Nacro puts its own distinct text document (_readme.txt) into all the folders that store the encrypted files.

The alert stated by text file requesting the random os really similar to the alerts provided by other ransomware hazards coming from the DJVU family. The caution basically indicates that the files have been secured and the only service to get access to it is to use a distinct standalone key. Regretfully, this declaration is definitely real.

The technique to secure the files utilized by Nacro is not completely investigated. However, there is no doubt that each computer owner may be issued an unique decryption key, which is definitely unique. It is incredibly hard to recuperate the data without the appropriate key in location.

“Don’t worry, you can return all your files!”, from text file message:

Don't worry, you can return all your files! virus

One more peculiarity of the Nacro virus is that the users are not able to get access to the key. The decrypting key is hosted on a special server under the total control by the crooks who have released the Nacro virus into the world wide web. In order to get the key and restore the crucial information, the users are informed to connect with the scams by means of e-mail or by telegram and to pay the ransom in the quantity of $980.

The message also states that individuals should call the Nacro authors within 72 hours upon the moment of the data file encryption. The alert indicates that by doing so individuals will obtain a 50% discount rate, therefore, the ransom quantity drops down to $490.

No matter what the amount of the ransom is, we highly advise that you do not pay the ransom. There is no warranty that these online scoundrels will keep their guarantees, so they may not care at all what the victims feel about the file encryption, even when the amount of the ransom is gotten into their accounts. Hence, paying ransom typically does not result in an effective recovery. So, the users might just lose their money for absolutely nothing.

Likewise, we advise you not to get in touch with the scams as they advise. Do not transfer loan into their wallets. There are no applications that could break the Nacro ransomware or bring back the data for free. For that reason, the only proper decision is to bring back the information from possible backups (if available).

Virus Summary

NameNacro Ransomware
File Extensionnacro
Short DescriptionThe ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files.
SymptomsFile encryption by the ransomware is performed by means of the AES-556 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .nacro extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsNasoh, Coharos, Mtogas
Removal Tool   GridinSoft Anti-Malware

Do not forget that the Web is now full of infections comparable to the Nacro ransomware. For example, this particular risk is generally identical to Brusaf and other ransomware-type infections. These damaging utilities have actually been developed in order to encrypt the essential data and express the need for the users to pay the ransom. All these infections use the identical algorithm to generate the particular key for effective files decryption.

Unless the Nacro ransomware is still under the development process or has actually got some hidden bugs, it is not possible to restore the information manually. Therefore, the only working solution to avoid the loss of your important data is to regularly keep updated backups of all your crucial documents.

Another crucial piece of guidance is to store the backups on special storage not connected to your primary PC. For instance, you may keep it on the USB Flash Drive, or some external hard disk, or by using the cloud data storage services. Keeping the backups on your regular drive is really risky, given that the backup may also be encrypted by the Nacro .

Leaks for the Nacro ransomware attack.

Nacro utilizes lots of paths to infiltrate the vulnerable computer systems. It is not specific what specific approach was utilized in your case, nevertheless, the invasion may occur through the following channels:

  • bundling with third-party programs, generally free apps;
  • spam e-mails from the unknown senders;
  • sites offering free hosting;
  • P2P (peer-to-peer) torrent downloads.

There are times when the Nacro may camouflage itself as some authentic application, for instance, through the deceptive signals requiring setup of some software update. This is the most common trick used by the scams to inject the Nacro infection files into the system. By doing this users partially take part in its installation, without plainly understanding the danger.

In addition, the frauds might send unsolicited spam email with difficult signals motivating individuals to open dubious attachments or click some download links, for example, those motivating the people to open specific photos, text files, tax documents and other info.

No doubt, opening these files or clicking the harmful links may basically harm the system. Fake Media Player update notices may result in the Nacro ransomware seepage. Likewise, downloading the broken software might furthermore include the ransomware installer. The last however not the least, installation of Nacro might occur through some Trojan horses that might be installed stealthily into the system and without the user’s direct approval or perhaps authorization.

Avoiding the Nacro ransomware injection.

Obviously, there is no outright warranty that your computer system will be always free of any malware attacks, nevertheless, we wish to share some useful ideas with you to make it much safer. Ensure to pay really attention while browsing the web and especially while getting cost-free programs. Do not open any suspicious email accessories, especially if the sender is not known to you.

Do not forget that particular freeware installer may also contain some other extra apps in the package. These extra applications might be really damaging. It is of utmost significance to keep your anti-virus software and your operating system in general to be constantly effectively upgraded.

It is quite rational that downloading pirated apps is unlawful, nevertheless, additionally, such unapproved apps usage might also bring severe damage to your computer. For this reason, do not download any split programs. Plus, the truth that your existing anti-virus did not safeguard the system from the Nacro ransomware is an excellent reason for you to reconsider your options and change to another program that can render the protecting functions on a much better level.

Below please find the quotation from the Nacro text file:

 Don't worry, you can return all your files!
 All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key.
 The only method of recovering files is to purchase decrypt tool and unique key for you.
 This software will decrypt all your encrypted files.
 What guarantees you have?
 You can send one of your encrypted file from your PC and we decrypt it for free.
 But we can decrypt only 1 file for free. File must not contain valuable information.
 You can get and look video overview decrypt tool:
 Price of private key and decrypt software is $980.
 Discount 50% available if you contact us first 72 hours, that's price for you is $490.
 Please note that you'll never restore your data without payment.
 Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.
 To get this software you need write on our e-mail:
 Reserve e-mail address to contact us:
 Our Telegram account:

Screenshot of files with “.nacro” extension added by the virus:”

Nacro Ransomware - encrypt files with .nacro extension

Use GridinSoft Anti-Malware to remove Nacro ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

2. Double-click on the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
GridinSoft Anti-Malware
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

4. Wait for the GridinSoft Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
GridinSoft Anti-Malware Scan

5. Click on “Clean Now”.

When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
GridinSoft Anti-Malware Scan Result

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Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbr├╝cken, Germany and currently lives in New York.

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