BestChange Russian Ransomware – How to Remove It
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BestChange Russia Ransomware – How to Remove It

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remove bestchange ru ransomware in full sensorstechforum guide

Recently detected data locker ransomware associated with the Russian exchange platform BestChange extorts a ransom of 25 000 Russian Ruble in Bitcoin for a decryption tool. When started on a target computer system it applies a variety of malicious changes that enable the encryption of certain types of files. Following encryption, corrupted files could not be opened.

In this article, you will find more information about this ransomware as well as a step-by-step removal and data recovery guide.

Threat Summary

NameBestChange Russian Ransomware
TypeRansomware, Cryptovirus
Short DescriptionA data locker ransomware that encodes important files and extorts a ransom payment in Bitcoin.
SymptomsEssential system setitngs are plagued. Important files are locked and inaccessbile. A ransom message blackmails victims to pay a ransom fee within a fixed time frame.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by BestChange Russian Ransomware

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User ExperienceJoin Our Forum to Discuss BestChange Russian Ransomware.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

BestChange Russian Ransomware – Distribution

Infecting BestChange ransomware files could be spread with the help of commonly used techniques like malspam, malvertising, unexpected redirects to corrupted web pages and fake software updates and infected software installers. Spread campaigns are presumably launched against Russian speaking countries. However, this does not eliminate the possibility of other countries to be targets of launched attack campaigns.

Here are some traits you should keep an eye on when you receive emails:

  • An URL address presented in the form of an in-text link, button, image, banner or other form. Once loaded in the browser the web page associated with this link usually triggers an automatic download process of the malicious ransomware payload. After downloading the payload the same page usually activates specific scripts that execute it directly on your PC.
  • An attachment that contains the malware in it. Usually, according to the text message this file should be reviewed as soon as possible due to the importance of its information. The moment you open it on your device is the moment when you trigger the infection process with .djvu files virus. This file may be a familiar type of file such as .rar, .zip, .7z, .docx When infected such a file could be set to evade active security measures and complete the attack without leaving you any chance of detecting the malicious activities it performs on the background.

Since the security of your device and your data is of paramount importance we recommend you to use the help of free online scanners like VirusTotal and ZipeZip every next time you receive a questionable email that contains any of the mentioned components. With the help of these scanners, you will easily identify whether the components are malicious or not.

BestChange Russia Ransomware – Overview

When started on a target computer system the so-called BestChange ransomware performs a variety of malicious actions that enable it to apply changes to essential system components and eventually reach data encryption stage. Before it could run its built-in cipher module, the ransomware should establish more malicious files and objects. Where these files could be located are the following folders:

  • Desktop
  • User Folders
  • %AppData%
  • %Local%
  • %LocalLow%
  • %Roaming%
  • %Temp%

By executing them in a predefined order, BestChange ransomware evades detection and gains persistence on the infected system. The latter is usually achieved after successful contamination of the registry keys Run and RunOnce. These keys are part of the Registry Editor which in turn is a hierarchical database where settings of some essential system processes are kept.

Once malicious values are added under the registry key Run ransomware files are automatically loaded on each system start.

Among the traits that signify for an infection with BestChange ransomware is a text file called инструкция по оплате. This file contains a ransom message written in Russian that reads the following:

Переходите по ссылке на сайт мониторинга обмена криптовалют.
https://www.bestchange.ru/sberbank-to-bitcoin.html
В левой колонке “отдадите” указываете удобный для Вас способ передачи денег. (сбербанк ,альфа ,киви, яндекс и т.д.)
В правой колонке “получите” выбираете Bitcoin.
Мониторинг предложит варианты обменников и их резервы.
Выберете один и самых верхних и перейдите к ним на сайт.
Создайте заявку и укажите наш адрес кошелька Bitcoin “1AxE1iGGGRt2YxW1h5Xzw6ConoW89P54cx” – без кавычек.
Для каждого человека выдается свой уникальный адрес и только Вы можете послать на него деньги.
Обмен происходит безопасно и быстро. (5-15 минут).
После оплаты, обменный пункт выдаст вам номер заявки со статусом.
В доказательство обмена средств с Вашей стороны скопируйте ссылку с заявкой и пришлите нам.
Для оплаты отводится 48 часа. По истечению срока сумма дешифратора увеличивается на 50%.
После оплаты мы вышлем вам дешифратор и будем сопровождать Вас по почте до полной расшифровки всех файлов.
Приобрести биткоины Вы также можете на сайте https://localbitcoins.com/ru/
Не советуем обменивать или покупать криптовалюту из контекстной рекламы Яндекс Директ или Google Adwords!!!
===============================================================================================================
Сумма дешифратора 25000 рублей. После оплаты высылаем дешифратор. Запускаете его, и в вашем случаи ждать расшифровки около 10-20 минут. Полностью сопроводим вас по почте до восстановления. Убедительная просьба, если хотите
проводить эксперименты с файлами сами или “мастерами” , то сохраните все отдельно и пусть проводят эксперименты отдельно, чтобы не испортить ничего. На данный момент кроме нас вам никто не поможет.
Поучительная статья на будущее!
https://habr.com/ru/company/veeam/blog/188544/

инструкция по оплате.txt ransom note bestchange russian ransomware sensorstechforum guide

Translated with the help of an automatic translator it becomes clear that the message in English reads the following:

Follow the link to the cryptocurrency exchange monitoring site.
https://www.bestchange.ru/sberbank-to-bitcoin.html
In the left column “give away” you specify a convenient way for you to transfer money. (Sberbank, alpha, kiwi, yandex, etc.)
In the right column “get” choose Bitcoin.
Monitoring will offer options for exchangers and their reserves.
Select the one and the top and go to them on the site.
Create a request and specify our Bitcoin wallet address “1AxE1iGGGRt2YxW1h5Xzw6ConoW89P54cx” – without quotes.
Each person is given a unique address and only you can send money to him.
The exchange takes place safely and quickly. (5-15 minutes).
After payment, the exchange office will give you the application number with the status.
As proof of your exchange, copy the link with the application and send it to us.
48 hours are allowed for payment. At the end of the period, the amount of the decoder is increased by 50%.
After payment, we will send you a descrambler and will accompany you by mail until full decryption of all files.
You can also buy bitcoins at https://localbitcoins.com/ru/
We do not recommend to exchange or buy cryptocurrency from contextual advertising Yandex Direct or Google Adwords !!!
================================================= ================================================= ===========
The amount of the decoder is 25,000 rubles. After payment we will send the decoder. Run it, and in your cases wait for decryption about 10-20 minutes. Fully escort you to the mail before recovery. Kindly requested if you want
conduct experiments with the files themselves or “masters”, then save everything separately and let them conduct experiments separately, so as not to spoil anything. At the moment, except for us, no one will help you.
An instructive article for the future!
https://habr.com/ru/company/veeam/blog/188544/

This message could be loaded on your screen at the end of the attack. Apparently, hackers behind this evil threat urge victims to transfer 25 000 Russian Ruble in Bitcoin within 48 hours. At the end of this period, the amount of the decoder is increased by 50%. At the moment of writing this article this amount equals to 0.10 Bitcoin or 377.30 US Dollars.

Our advice is to avoid their instructions and attempt to deal with the problem without risking the loss of both your money and data. Check the guide at the end of this article to learn how to clean your system, make it secure and find out how to potentially restore encrypted files.

BestChange Russia Ransomware – Encryption Process

The encryption stage begins soon after all initial malicious modifications are applied. For it, BestChange RU ransomware activates a built-in cipher module that is designed to scan all drives for targeted types of files and transform their original code with the help of sophisticated cipher algorithm. At last, corrupted files are inaccessible unless their code is reverted back to its original state.

All types of files that are commonly used for the storage of important data could be encoded by this ransomware:

  • Audio files
  • Video files
  • Document files
  • Image files
  • Backup files
  • Banking credentials, etc

At this point, there is no specific file extension related to BestChange cryptovirus. So your corrupted files may only appear with the system icon used for broken files and without any added extensions.

Remove BestChange Russia Ransomware

The so-called BestChange Russia Ransomware is a threat with highly complex code designed to corrupt both system settings and valuable data. So the only way to use your infected system in a secure manner again is to remove all malicious files and objects created by the ransomware. For the purpose, you could use our removal guide that reveals how to clean and secure your system step by step. In addition, in the guide, you will find several alternative data recovery approaches that may be helpful in attempting to restore files encrypted by this ransomware. We remind you to back up all encrypted files to an external drive before the recovery process.

Gergana Ivanova

Gergana Ivanova

Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections.

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