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Has the extension of your files changed? A counter and a request for money on the screen? Ransomwareis malware that holds your data hostage by encrypting it at military level and demands a ransom in return for access.
In this guide; how the virus works, how it changes file extensions, WannaCry, LockBit types such as and most importantly without paying the ransom how can you escape We are telling.
Your photos, documents and databases are locked with a powerful algorithm.
Extensions such as .locked, .enc, .crypt are added.
It blocks access with military-grade encryption.
It spreads to other computers and backups on the network.
It prevents rollback by deleting shadow copies.
A ransomware attack usually follows these stages:
It infiltrates the system via a malicious email attachment, an insecure RDP connection, or an unupdated software vulnerability.
The software contacts the attacker's server and generates an encryption key specific to that system.
Documents, images and databases (docx, jpg, sql) in the system are found and encrypted. Extensions vary.
The desktop background changes and "READ_ME.txt" files are created. Payment instructions are given.
Know your enemy: The most common ransomware variants
It is the most common type. It encrypts files but allows you to use the system. The goal is to take data hostage. (Ex: WannaCry, CryptoLocker)
Instead of encrypting files, it completely locks access to the computer or mobile device's interface. Only the ransom screen appears.
It looks like a fake antivirus or police alert. He scares you by saying, "There is a virus on your computer, pay to clean it."
He not only encrypts the data, but also blackmails him by saying, "If you don't pay, we will publish your private data on the internet." (KVKK/GDPR risk)
Software developers sell the virus "for rent" on the dark web. Even amateur hackers can rent this service and launch attacks.
It specifically targets Android devices. It is usually transmitted through "drive-by downloads" or fake applications.
If you've been hacked, stay calm and follow these steps:
Once infected, ransomware is very difficult to get rid of. The best strategy is to prevent transmission.
The only sure way to recover your data is:
Frequently asked questions about ransomware
No, there is no guarantee of this. After receiving the money, cybercriminals may not send the key or ask for money again. Moreover, paying would mean financing this criminal pattern.
No. The file extension is just a label (eg: .locked). The actual content of the file (binary data) is mathematically encrypted. Even if you reinstate the extension, the file will appear corrupted and will not open.
No software can guarantee100 %100 protection. Attackers constantly develop new methods. However, up-to-date EDR (Endpoint Detection and Response) solutions and regular backups minimize the risk.
If your phone is infected and you connect it to the computer via USB and put it in "file transfer" mode, the virus can copy itself to the computer. There is also a risk of spread over the network.
Create a shield against ransomware with Eka Sunucu's professional backup solutions and firewall services. Take precautions before you lose your data.
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