NWORANSOM Ransomware 🔐 (.SUB_TO_CRYPTO_NWO File) — Removal Guide

The Nworansom virus belongs under the Chaos ransomware family. A harmful program of this type encrypts all user’s data on the PC (images, text files, excel sheets, music, videos, etc) and adds its own extension to every file, leaving the Windows!System32.txt files in each folder which contains the encrypted files.

What is known about the Nworansom virus?

☝️ Nworansom is a Chaos family ransomware-type malicious agent.

Nworansom appends its specific .sub_to_crypto_nwo extension to every file’s name. For example, an image entitled “photo.jpg” will be changed to “photo.jpg.sub_to_crypto_nwo”. In the same manner, the Excel table with the name “table.xlsx” will become “table.xlsx.sub_to_crypto_nwo”, and so on.

In every folder that contains the encoded files, a Windows!System32.txt text file will appear. It is a ransom money memo. It contains information on the ways of paying the ransom and some other information. The ransom note most probably contains instructions on how to purchase the decryption tool from the racketeers. That is it.

Nworansom Summary:

Name Nworansom Virus
Ransomware family1 Chaos ransomware
Extension .sub_to_crypto_nwo
Ransomware note Windows!System32.txt
Ransom 0.1473766 BTC
Detection Win32/Injector.COFG, Trojan:MSIL/AgentTesla.ABYD!MTB, Win32/GenKryptik.GNIZ
Symptoms Your files (photos, videos, documents) get a .sub_to_crypto_nwo extension and you can’t open them.
Fix Tool See If Your System Has Been Affected by Nworansom virus

The Windows!System32.txt file coming in package with the Nworansom malware provides the following discouraging information:

----> NWOransom is multi language ransomware. Translate your note to any language <----
All of your files have been encrypted
Your computer was infected with a ransomware virus. Your files have been encrypted and you won\'t
be able to decrypt them without our help.What can I do to get my files back?You can buy our special
decryption software, this software will allow you to recover all of your data and remove the
ransomware from your computer.The price for the software is $666,666 (666,666 Bitcoin). Payment can be made in Bitcoin only.
How do I pay, where do I get Bitcoin?
Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search
yourself  to find out how to buy Bitcoin.
Many of our customers have reported these sites to be fast and reliable:
Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com


Payment informationAmount: 0.1473766 BTC
Bitcoin Address:  no, to decrypt sub to crypto nwo

In the image below, you can see what a folder with files encrypted by the Nworansom looks like. Each filename has the ".sub_to_crypto_nwo" extension appended to it.

Nworansom Virus - encrypted .sub_to_crypto_nwo files

That is how encrypted ".sub_to_crypto_nwo" files look.

How did my machine catch Nworansom ransomware?

There are plenty of possible ways of ransomware infiltration.

Nowadays, there are three most popular methods for evil-doers to have ransomware acting in your system. These are email spam, Trojan injection and peer-to-peer file transfer.

  • Another thing the hackers might try is a Trojan horse scheme. A Trojan is an object that infiltrates into your machine disguised as something legal. For example, you download an installer of some program you want or an update for some program. But what is unboxed turns out to be a harmful agent that corrupts your data. As the update wizard can have any title and any icon, you have to make sure that you can trust the source of the things you're downloading. The optimal thing is to use the software developers' official websites.
  • As for the peer networks like BitTorrent or eMule, the danger is that they are even more trust-based than the rest of the Web. You can never know what you download until you get it. So you'd better be using trustworthy websites. Also, it is reasonable to scan the folder containing the downloaded objects with the anti-malware utility as soon as the downloading is done.

How do I get rid of ransomware?

It is important to note that besides encrypting your data, the Nworansom virus will probably install Vidar Stealer on your computer to get access to credentials to different accounts (including cryptocurrency wallets). The mentioned spyware can extract your credentials from your browser's auto-filling cardfile.

How do I avert ransomware infection?

Nworansom ransomware has no endless power, neither does any similar malware.

You can armour your computer from its infiltration in several easy steps:

  • Never open any emails from unknown senders with unknown addresses, or with content that has likely no connection to something you are expecting (can you win in a lottery without participating in it?). If the email subject is more or less something you are expecting, scrutinize all elements of the suspicious email carefully. A hoax email will surely contain a mistake.
  • Do not use cracked or untrusted software. Trojans are often spreaded as a part of cracked products, most likely as a “patch” preventing the license check. But untrusted programs are difficult to distinguish from trustworthy software, because trojans sometimes have the functionality you seek. You can try searching for information about this program on the anti-malware message boards, but the optimal way is not to use such software.

FAQ

🤔 How can I open ".sub_to_crypto_nwo" files?Are the ".sub_to_crypto_nwo" files accessible?

Unfortunately, no. You need to decipher the ".sub_to_crypto_nwo" files first. Then you will be able to open them.

🤔 The encrypted files are very important to me. How can I decrypt them quickly?

If the “.sub_to_crypto_nwo” files contain some really important information, then you probably have them backed up. In case you haven't, there is still a chance that you do have a Restore Point from some time ago to roll back the whole system to the moment when it had no virus yet, but already had your files. All other solutions require time.

🤔 What actions should I take if the Nworansom malware has blocked my computer and I can't get the activation code.

🤔 What could help the situation right now?

Many of the blocked files might still be at your disposal

  • If you sent or received your important files by email, you could still download them from your online mail server.
  • You may have shared photographs or videos with your friends or family members. Simply ask them to send those images back to you.
  • If you have initially got any of your files from the Web, you can try to do it again.
  • Your messengers, social networks pages, and cloud drives might have all those files as well.
  • Maybe you still have the needed files on your old PC, a laptop, phone, memory stick, etc.

USEFUL TIP: You can employ data recovery programs2 to retrieve your lost information since ransomware encrypts the copies of your files, deleting the original ones. In the video below, you can learn how to use PhotoRec for such a restoration, but remember: you won't be able to do it before you remove the ransomware itself with an anti-malware program.

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Brendan Smith

References

  1. My files are encrypted by ransomware, what should I do now?
  2. Here's the list of Best Data Recovery Software Of 2023.

About the author

Brendan Smith

Cybersecurity analyst covering malware families, suspicious files, and detection alerts. Brendan focuses on clear explanations of what a warning means, when it may be a false positive, and which cleanup steps are appropriate.

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