Clop ransomware group lists hertz##### on its leak site

• Ransomware group: Clop
• Country: United States
• Sector: Transportation
• Announcement date: December 24, 2024

The Clop ransomware group has issued a claim on its leak site asserting that it has successfully compromised data belonging to Hertz. The announcement, which was posted on December 24, 2024, marks a new potential target for the threat actor group, which is known for large-scale data theft operations.

The details of the claimed attack

According to the announcement made by the Clop group, the attack was carried out on December 24, 2024. The threat actors claim that they gained access to the organization's environment by exploiting vulnerabilities within the Cleo file transfer software. This method of entry highlights a recurring pattern in modern cyberattacks, where actors target specific software components to gain a foothold in a network.

The group has stated that they are currently attempting to establish contact with the company. Their stated objective is to provide the organization with access to a private chat channel, which would serve as a platform for conducting ransom negotiations. This approach is a hallmark of modern ransomware operations, where the goal is to pressure the victim into paying a ransom to prevent the release of sensitive information.

Information regarding the leaked data

At this stage of the incident, there is a lack of specific details regarding the content of the data that has been allegedly compromised. No screenshots or specific file types have been provided by the group to substantiate their claims. Furthermore, the listing does not provide information regarding the total size of the data or the specific number of files involved in the breach.

The listing names no specific data types that have been affected by this incident.

About Hertz

Hertz Global Holdings is a multinational car rental company that maintains operations on a worldwide scale. The company provides a variety of vehicle rental services to both individual and corporate customers. Its service offerings are delivered through several well-known brands, including Hertz, Dollar, and Thrifty.

Analysis and implications for the sector

This incident may be part of a broader campaign conducted by the Clop group, which has a history of leveraging supply chain vulnerabilities to conduct mass data theft. This group is often associated with TA505, a threat actor known for executing widespread campaigns by targeting vulnerabilities in file transfer software. Because the group has a history of such methods, the possibility that the stolen data could be published or sold on the dark web must be considered.

The potential exposure of corporate data in such an event can lead to significant secondary risks. For the organization and its stakeholders, this may include the threat of identity theft or the launching of targeted phishing attacks against both customers and employees. Such attacks often use stolen information to gain further trust and access to more sensitive systems.

As the organization is based in the United States, a confirmed data breach could trigger various legal obligations. Depending on the nature of the data and the residency of the affected individuals, the company may face notification requirements under various state laws and federal regulations. For organizations operating in the transportation and service sectors, maintaining robust security posture and monitoring for supply chain vulnerabilities is a critical defensive step to mitigate these types of risks.

Ransomware groups often utilize a strategy known as double extortion, where they not only encrypt a victim's systems but also steal sensitive data to use as leverage. This increases the pressure on the organization to comply with ransom demands to avoid the public disclosure of proprietary or personal information. Organizations typically defend against these threats by implementing strict access controls, maintaining regular backups, and ensuring that all third-party software, such as file transfer tools, is patched and updated against known vulnerabilities.