Messe C listed on play ransomware leak site

• Ransomware group: play
• Country: Denmark
• Sector: Professional Services
• Announcement date: September 20, 2024

The play ransomware group has published an announcement on its leak site claiming to have compromised data belonging to Messe C, a professional services organization based in Denmark. The group asserts that it has successfully gained access to the organization's systems and has obtained various documents. The announcement, which was published on September 26, 2024, poses a potential threat to the organization's operations.

The details of the claimed attack

According to the announcement released by the play ransomware group, the attackers claim to have successfully infiltrated the internal systems of Messe C. The group asserts that they have obtained access to a variety of documents and sensitive information during their intrusion. This type of claim is a common characteristic of ransomware-as-a-service (RaaS) operations, where threat actors use extortion to pressure victims into paying for the return of stolen data or to prevent its public release.

The group's announcement suggests a significant breach of the organization's digital perimeter. While the specific method of initial access has not been detailed in the public claim, the assertion that they have accessed various documents indicates a level of persistence within the network. The timing of the announcement, occurring shortly after the claimed attack date, highlights the rapid pace at which these groups often move from initial compromise to public extortion.

The types of data allegedly exfiltrated

The play ransomware group has made specific claims regarding the nature of the data they have allegedly exfiltrated from Messe C. The group asserts that the stolen information includes a wide range of sensitive and confidential materials. According to the group's claims, the following types of data have been compromised:

• Personal data
• Client documents
• Budget data
• Payroll information
• Accounting records
• Contracts
• Tax information
• Identification documents

The inclusion of such a diverse array of data types—ranging from internal financial records like budgets and accounting to highly sensitive personal information such as identification documents and payroll details—suggests a broad scope of the alleged intrusion. The theft of such information can have far-reaching consequences for both the organization and the individuals whose data is involved.

Analysis and potential consequences

The play group, which has been active since 2022, is known for employing double extortion tactics. In a double extortion scheme, attackers not only encrypt an organization's data to disrupt operations but also steal sensitive information to use as leverage. By threatening to leak the stolen data on a public leak site, the group increases the pressure on the victim to meet their demands. This method is particularly effective against organizations that handle significant amounts of sensitive client and employee information.

The exfiltration of the organization's data may create secondary risks, such as identity theft for employees and clients. Because the stolen files allegedly include identification documents and personal data, the individuals affected may face long-term risks of fraud and impersonation. Furthermore, since Messe C is based in Denmark, this incident may lead to legal consequences under the EU General Data Protection Regulation (GDPR), which mandates strict protections for personal data and imposes heavy penalties for failures in data security and protection.

The group's relatively closed operational style suggests that the data exfiltration process may be complex. For organizations in the professional services sector, such incidents can lead to negative impacts on operational continuity and reputation. To mitigate these risks, organizations typically focus on implementing robust defensive measures, such as multi-factor authentication, regular security awareness training, and comprehensive data encryption, though the specific defensive posture of Messe C is not known.