Foreword:
Krize will add its specific .Krize extension to the header of each encrypted file. For example, an image named "photo.jpg" will be changed to "photo.jpg.krize". Likewise, an Excel file named "table.xlsx" will become "tablexlsx.krise" and so on.
In each folder containing encrypted files, a leia_me.txt text document is created. This is a ransom memo. There you can find information about ways to contact the extortionist and some other reviews. The ransom note usually contains instructions on how to purchase the decryption tool from the tamperer. This decoding tool is available by contacting [email protected] via email. It was almost a criminal conspiracy.
In the screenshot below you can see what a directory containing Krize encrypted files looks like. Each file name has a ".krize" extension appended to it.
How did Krize ransomware get on my computer?
Currently, there are three most exploited ways for tamperers to use the Krize virus in your digital environment. These are spam, Trojan injection, and peer-to-peer networking.
If you open your mailbox and see letters that look like notifications from utility service companies, postal agencies like FedEx, Internet access providers, etc., but you don't know their addresses, be careful when opening these letters. They most likely contain a malware file. Therefore, it is more dangerous to open any attachments attached to such emails.
Another thing a hacker might try is a Trojan virus program. A Trojan horse is a program that enters a computer disguised as something else. For example, you download an installer for a required program or an update for some software. But unboxed content itself is a harmful program that encodes data. Since update packages can have any name and icon, you'd better make sure you can trust the source of what you're downloading. The best way is to use the official website of the software developer.
As for peer-to-peer file transfer protocols like torrents or eMule, the danger is that they are more trust-based than other protocols on the Internet. You can never know what you downloaded until you get it. So you'd better use a trustworthy source. Also, it's a good idea to scan the folder containing the downloaded file with antivirus software as soon as the download is complete.
How do I protect against ransomware?
1. Efficient data backup: Organizations must adopt a regular data backup and recovery plan for all critical data they store. Backups should be tested and backup data must be stored on a separate device, preferably offline.
2. Regular patch updates: Application patches and operating system patches must be up-to-date and tested to avoid any potential vulnerabilities. Efficient patch management reduces the likelihood of attacks through exploitable weak links.
3. Limit the use of elevated privileges: Organizations should follow a restricted permissions model for user access to reduce the chance of them installing and running unwanted software or applications.
4. Antivirus updates: The system must have the latest antivirus software installed and all downloaded files must be scanned through it.
5. Implement application whitelisting: Organizations must follow an application whitelisting process to prevent systems and networks from being infected by malicious or unauthorized applications.
6. Create user awareness: Users are the weakest link in cybersecurity and it is important to educate them through proper training. Security professionals must be aware of the latest trends in this area and need to educate users about spam and phishing attacks.
7. Email Protection: Organizations must keep a close eye on their emails. They should block emails with attachments from suspicious sources.
8. Endpoint protection: Organizations must protect endpoints by preventing malicious files from running.
9. Develop good security practices: Organizations must maintain good security habits and security practices while browsing the web, and data must be protected with appropriate controls.
How to recover my data?
Two methods:
The first is to pay a ransom as required to obtain the private key, but I do not recommend this method, because a large number of cases have proven that after paying the ransom, criminals will immediately increase the amount of money, ask for a price increase, and even stop wasting time replying to emails. .
The second is to find safe130, a domestic company specializing in data recovery, and ask for their help. After identifying the virus software you have, they will give you the most professional solution. Currently, 99% of the viruses on the market are All can be decrypted successfully, and the probability of file recovery is close to 100%.