Ragnar Locker ransomware group lists Hundred thousands of personal data, leak preview on its leak site

• Ransomware group: Ragnar Locker
• Country: Italy
• Sector: Healthcare
• Announcement date: December 28, 2022

The ransomware group known as Ragnar Locker has published a data leak preview on its dedicated leak site, claiming that the stolen information belongs to the Azienda Ospedaliera di Alessandria. The announcement, made on December 28, 2022, suggests a significant breach involving sensitive information from the Italian healthcare provider.

The details of the alleged attack

According to the claims made by Ragnar Locker, the group successfully gained unauthorized access to the networks of the Azienda Ospedaliera di Alessandria. The threat actors allege that they were able to exfiltrate a massive volume of data, estimated to be over 1 TB in size. To demonstrate the validity of their breach, the group has released a 37 GB data sample on their leak site.

The group explicitly stated that this 37 GB sample represents only a small fraction—specifically 5%—of the total volume of data they claim to have stolen. In their announcement, the attackers also leveled accusations against the institution, alleging that the organization's existing cybersecurity measures were insufficient to prevent such an intrusion.

Ragnar Locker typically employs a double extortion tactic, a method where attackers first encrypt an organization's systems to disrupt operations and then threaten to leak sensitive data to pressure the victim into paying a ransom. This approach creates a dual crisis for the target: operational paralysis and the threat of massive regulatory and reputational damage.

Data types and content involved

The samples shared by the threat actors contain a wide variety of sensitive files. The leaked content is reported to include highly confidential information that could impact both the institution and its patients. The specific types of data mentioned in the leak include:

• Patient personal information
• Medical records
• Financial data
• Departmental documents

The presence of such diverse data types—ranging from medical history to financial reports—highlights the potential severity of the breach for the affected parties.

About Azienda Ospedaliera di Alessandria

Azienda Ospedaliera di Alessandria is a public hospital and healthcare organization located in Alessandria, Italy. The institution serves as a vital part of the local infrastructure, providing a wide range of medical services, specialized treatments, and emergency care to the local population in the region.

Implications and industry considerations

The alleged exposure of healthcare data carries significant risks for patient privacy. Because the data involves medical records and personal information, the breach could lead to severe consequences for the individuals involved. Furthermore, since the institution is based in Italy, the incident may lead to legal consequences under the General Data Protection Regulation (GDPR) framework, which governs data protection and privacy in the European Union.

From a criminal perspective, the stolen financial and personal data could be exploited by malicious actors for identity theft or targeted phishing attacks. Such attacks often use stolen information to gain further trust from victims, making them more likely to disclose even more sensitive credentials or funds.

The operational impact of such an attack can be profound. When ransomware groups like Ragnar Locker target an institution, their ability to encrypt systems can severely disrupt the continuity of essential services. For healthcare providers, this disruption can affect the delivery of critical medical care and emergency services.

In response to such threats, organizations in the healthcare sector often find it necessary to conduct thorough reviews of their security infrastructure. Common defensive measures include implementing robust network segmentation, enhancing monitoring capabilities, and ensuring that all employees are trained to recognize phishing attempts. Additionally, notifying affected individuals and regulatory bodies is a critical step in managing the aftermath of a data exposure.