Ransomware is a type of malware that encrypts a victim’s data and demands a ransom payment in exchange for the decryption key. However, ransomware doesn’t just encrypt data – it also exfiltrates and steals it. This means that in addition to holding the victim’s data hostage, the attackers also gain access to sensitive information that can be used for further attacks or sold on the black market.
Ransomware attacks are becoming increasingly sophisticated and targeted, with attackers using a variety of techniques to gain access to a victim’s data. One common method is to use phishing emails to trick the victim into opening a malicious attachment or clicking on a malicious link. This allows the attacker to gain access to the victim’s computer and begin the encryption process.
Once the encryption process is complete, the attacker will typically display a ransom note on the victim’s computer, demanding payment in exchange for the decryption key. The ransom amount is usually in the form of cryptocurrency, such as Bitcoin, and the victim is given a deadline to make the payment. If the payment is not made by the deadline, the attacker will often threaten to delete the victim’s data or release it publicly.
However, what many victims don’t realize is that the encryption process is not the only thing that happens during a ransomware attack. While the victim is focused on trying to regain access to their data, the attacker is also exfiltrating and stealing sensitive information from the victim’s computer. This can include personal information, financial information, and even business secrets.
The exfiltration process can take several forms. In some cases, the attacker will use a remote access tool (RAT) to gain access to the victim’s computer and steal information directly. In other cases, the attacker will use a command and control server to receive the stolen data. The stolen data can then be used for further attacks or sold on the black market.
One example of this type of ransomware is the Ryuk ransomware. Ryuk is a highly targeted ransomware that is known for exfiltrating sensitive information before encrypting it. In one case, the attackers used Ryuk to steal sensitive information from a healthcare organisation before encrypting their data. The stolen information was then used to launch a targeted phishing campaign against the organisation’s customers.
Another example is the Maze ransomware. Maze is known for exfiltrating data before encrypting it and then threatening to release the stolen data publicly if the ransom is not paid. In one case, the attackers used Maze to steal sensitive information from a construction company before encrypting their data. The stolen information was then used to launch a targeted phishing campaign against the company’s customers.
Ransomware attacks are becoming increasingly sophisticated and targeted, and victims should be aware that the encryption process is not the only thing that happens during an attack. In addition to holding the victim’s data hostage, attackers are also exfiltrating and stealing sensitive information that can be used for further attacks or sold on the black market.
To protect against ransomware attacks, organisations should implement a comprehensive security strategy that includes regular backups, security awareness training for employees, and a incident response plan. Organisations should also be aware of the latest ransomware threats and take steps to protect themselves.
In conclusion, Ransomware is not just a malicious software that encrypts data, but also exfiltrates and steals it. This means that in addition to holding the victim’s data hostage, the attackers also gain access to sensitive information that can be used for further attacks or sold on the black market. Therefore, it is important for organisations to implement a comprehensive security strategy to protect themselves against ransomware attacks
