TH Virus 🔐 (.TH Files) — How to Remove?

The Th virus belongs to the Xorist ransomware family. Ransomware of such sort encrypts all user’s data on the computer (images, text files, excel tables, music, videos, etc) and adds its extra extension to every file, leaving the КАК РАСШИФРОВАТЬ ФАЙЛЫ.txt files in every folder with the encrypted files.

Th virus: what is known so far?

☝️ Th is a Xorist family ransomware-type infection.

Th will append its extra .th extension to the name of each encoded file. For instance, a file named “photo.jpg” will be renamed to “photo.jpg.th”. Just like the Excel sheet with the name “table.xlsx” will be renamed to “table.xlsx.th”, and so on.

In every folder that contains the encoded files, a КАК РАСШИФРОВАТЬ ФАЙЛЫ.txt text document will be found. It is a ransom money note. It contains information about 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. You can get this decryptor after contacting [email protected] by email. That is it.

Th Overview:

The КАК РАСШИФРОВАТЬ ФАЙЛЫ.txt document coming in package with the Th ransomware states the following:

Ваши файлы были зашифрованны. Для того что бы расшифровать свои файлы, Вам необходимо написать нам, на адрес почты, который указан ниже.

[email protected]

Ждем ответа сегодня, если не получим ответа, удаляем ключи расшифровки Ваших файлов.

Расшифровка файлов производиться нашим специалистом через AnyDesk или RDP

In the image below, you can see what a directory with files encrypted by the Th looks like. Each filename has the “.th” extension added to it.

How did my computer get infected with Th ransomware?

There are many possible ways of ransomware injection.

Nowadays, there are three most exploited ways for criminals to have the Th virus settled in your system. These are email spam, Trojan infiltration and peer file transfer.

• If you open your inbox and see letters that look like familiar notifications from utility services companies, delivery agencies like FedEx, Internet providers, and whatnot, but whose addresser is strange to you, be wary of opening those emails. They are most likely to have a malicious file attached to them. Thus it is even more dangerous to download any attachments that come with letters like these.
• Another thing the hackers might try is a Trojan file model. A Trojan is a program that gets into your computer pretending to be something legal. Imagine, you download an installer for some program you want or an update for some program. However, what is unboxed reveals itself a harmful agent that compromises your data. As the installation wizard can have any name and any icon, you have to make sure that you can trust the resource of the things you’re downloading. The best way is to use the software companies’ official websites.
• As for the peer networks like torrents or eMule, the danger is that they are even more trust-based than the rest of the Internet. You can never know what you download until you get it. So you’d better be using trustworthy resources. Also, it is a good idea to scan the folder containing the downloaded files with the anti-malware utility as soon as the downloading is finished.

How to remove ransomware?

It is important to inform you that besides encrypting your data, the Th virus will probably install Vidar Stealer on your machine to get access to credentials to various accounts (including cryptocurrency wallets). That spyware can derive your credentials from your browser’s auto-filling data.

How сan I avoid ransomware injection?

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

You can armour your system from ransomware infiltration in several easy steps:

• Ignore any letters from unknown mailboxes with unknown addresses, or with content that has likely no connection to something you are waiting for (can you win in a lottery without even taking part in it?). If the email subject is likely something you are expecting, scrutinize all elements of the questionable letter carefully. A fake letter will surely have a mistake.
• Do not use cracked or unknown software. Trojans are often spreaded as an element of cracked products, most likely as a “patch” which prevents the license check. Understandably, dubious programs are difficult to distinguish from trustworthy ones, as trojans may also have the functionality you need. Try searching for information about this program on the anti-malware forums, but the optimal way is not to use such programs at all.

FAQ

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

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

🤔 I really need to decrypt those “.th” files ASAP. How can I do that?

If the “.th” 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. The rest of the methods require patience.

🤔 What should I do if the Th malware has blocked my computer and I can’t get the activation code.

🤔 And what should I do now?

Some of the encrypted data can be found elsewhere.

• If you exchanged your critical 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. Just ask them to send those images back to you.
• If you have initially downloaded any of your files from the Web, you can try to do it again.
• Your messengers, social media pages, and cloud storage might have all those files too.
• Maybe you still have the needed files on your old PC, a notebook, phone, external storage, etc.

USEFUL TIP: You can use data recovery utilities² to retrieve your lost information since ransomware blocks the copies of your files, removing the original 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. My files are encrypted by ransomware, what should I do now?
2. Here’s the list of Best Data Recovery Software Of 2023.