CURSODFIR Ransomware 🔐 (.CURSODFIR File) — Removal Guide

The Cursodfir virus belongs to the ransomware type of infection. Ransomware of such sort encrypts all the data on your PC (images, documents, excel sheets, audio files, videos, etc) and appends its specific extension to every file, leaving the meleaicara.txt files in every directory which contains the encrypted files.

Cursodfir virus: what is known so far?

Cursodfir adds its own .cursoDFIR extension to every file’s name. For example, a file entitled “photo.jpg” will be altered to “photo.jpg.cursoDFIR”. Just like the Excel table named “table.xlsx” will become “table.xlsx.cursoDFIR”, and so on.

In every folder containing the encoded files, a meleaicara.txt text file will be created. It is a ransom money memo. It contains information about the ways of paying the ransom and some other information. The ransom note most probably contains a description of how to buy the decryption tool from the tamperers. That is it.

Cursodfir Summary:

The meleaicara.txt file accompanying the Cursodfir ransomware states the following:

**************** ESTE RANSOMWARE FOI PARA VOCÊ! ***********************

É VOCÊ MESMO QUE TENTOU BAIXAR UM MICROSOFT PIRATA!

PARA DESCRIPTOGRAFAR PRECISA PAGAR

PAGAR 1 MOEDA DIGITAL

Key: EC63E8BE0717BD92C0FFBF7A21749A54

********************** CURSO DE DFIR Mente Binária *************************
Professor: Caique

In the screenshot below, you can see what a directory with files encrypted by the Cursodfir looks like. Each filename has the “.cursoDFIR” extension appended to it.

How did my computer get infected with Cursodfir ransomware?

There are plenty of possible ways of ransomware injection.

There are currently three most exploited methods for criminals to have ransomware planted in your digital environment. These are email spam, Trojan injection and peer-to-peer file transfer.

• If you access your mailbox and see emails that look just like notifications from utility services providers, delivery agencies like FedEx, Internet providers, and whatnot, but whose addresser is strange to you, beware of opening those emails. They are most likely to have a malicious item enclosed in them. Thus it is even more dangerous to open any attachments that come with letters like these.
• Another option for ransom hunters is a Trojan virus scheme. A Trojan is a program that gets into your PC disguised as something different. For instance, you download an installer of some program you want or an update for some service. But what is unpacked turns out to be a harmful program that compromises your data. Since the update package can have any name and any icon, you’d better be sure that you can trust the resource of the stuff you’re downloading. The best way is to trust the software developers’ official websites.
• As for the peer networks like torrents or eMule, the threat is that they are even more trust-based than the rest of the Web. You can never guess what you download until you get it. So you’d better be using trustworthy websites. Also, it is reasonable to scan the directory containing the downloaded items with the antivirus as soon as the downloading is finished.

How to remove ransomware?

It is important to inform you that besides encrypting your files, the Cursodfir virus will most likely deploy Vidar Stealer on your computer to get access to credentials to various accounts (including cryptocurrency wallets). The mentioned program can extract your logins and passwords from your browser’s auto-filling data.

How сan I avert ransomware injection?

Cursodfir ransomware doesn’t have a superpower, neither does any similar malware.

You can defend yourself from its infiltration within three easy steps:

• Ignore any emails from unknown mailers with unknown addresses, or with content that has likely no connection to something you are expecting (can you win in a lottery without even taking part in it?). If the email subject is likely something you are waiting for, check all elements of the suspicious email carefully. A hoax letter will surely contain a mistake.
• Do not use cracked or untrusted software. Trojans are often shared as an element of cracked products, possibly under the guise of “patch” to prevent the license check. Understandably, dubious programs are difficult to tell from reliable software, because trojans sometimes have the functionality you seek. You can try to find information on this program on the anti-malware message boards, but the optimal solution is not to use such software.

Frequently Asked Questions

🤔 How can I open “.cursoDFIR” files?Are the “.cursoDFIR” files accessible?

Negative. That is why ransomware is so frustrating. Until you decode the “.cursoDFIR” files you will not be able to access them.

🤔 What should I do to make my files accessible as fast as possible?

If the “.cursoDFIR” files contain some really important information, then you probably have them backed up. If not, there is still a function of System Restore but it needs a Restore Point to be previously saved. The rest of the methods require patience.

🤔 What to do if the Cursodfir ransomware has blocked my computer and I can’t get the activation key.

🤔 What can I do right now?

Many of the blocked files might still be at your disposal

• If you exchanged your important files through email, you could still download them from your online mail server.
• You might have shared photographs or videos with your friends or relatives. Simply ask them to post those images back to you.
• If you have initially got any of your files from the Internet, you can try doing it again.
• Your messengers, social media pages, and cloud storage might have all those files as well.
• It might be that you still have the needed files on your old computer, a laptop, cellphone, memory stick, etc.

USEFUL TIP: You can use file recovery programs¹ to retrieve your lost information since ransomware arrests the copies of your files, removing the authentic ones. In the tutorial below, you can learn how to use PhotoRec for such a restoration, but remember: you won’t be able to do it before you eradicate the virus with an anti-malware program.

1. Here are Best Data Recovery Software Of 2024.