RansomHub ransomware group lists www.argentosc.com on its leak site

• Ransomware group: RansomHub
• Country: Argentina
• Announcement date: March 25, 2025

RansomHub claims responsibility for Argento SC data leak

The ransomware group known as RansomHub has officially listed the Argentinian organization Argento SC on its dedicated leak site. According to the announcement made on March 25, 2025, the threat actors claim to have successfully exfiltrated a significant volume of data from the company's internal systems. This development follows a claimed attack date of March 7, 2025, marking a period of significant data exposure for the targeted entity.

Ransomware leak sites are a common tool used by modern cybercriminal groups to exert pressure on victims. In many cases, these groups employ a tactic known as double extortion. In this scenario, attackers do not merely encrypt a company's files to disrupt operations; they also steal sensitive information before the encryption process begins. The threat of leaking this stolen data on a public forum is used as leverage to coerce the organization into paying a ransom. If the ransom is not met, the group threatens to publish the data, causing maximum reputational and legal damage to the victim.

Details of the claimed data theft

The threat actor claims to have obtained a massive dataset consisting of approximately 137,541 files. While the specific size of the data in gigabytes or terabytes was not provided, the sheer volume of individual files suggests a widespread breach within the organization's infrastructure. The group has provided screenshots to support their claims, which appear to show various internal documents.

Based on the evidence provided by the attackers, the stolen information includes highly sensitive documents that could compromise the privacy of both the company and its workforce. The specific types of data identified in the leak include:

• Employee tax records
• Social security numbers
• Financial statements
• Non-disclosure agreements
• Insurance policies

The presence of such diverse data types—ranging from corporate financial records to individual personal identifiers—indicates that the attackers likely gained access to various departments, including human resources and finance.

About Argento SC

Argento SC is an Argentina-based software development and technology solutions company. The firm provides custom software projects and digital transformation services for businesses. As a provider of digital transformation and custom software, the organization plays a role in managing the technological infrastructure and digital processes for its clients.

Impact assessment and organizational implications

The exposure of the data claimed by RansomHub carries significant risks for Argento SC and its employees. The leakage of social security numbers and tax records places employees at a heightened risk of identity theft and various forms of financial fraud. Furthermore, the disclosure of insurance policies and other personal details could enable attackers to launch highly targeted phishing attacks, often referred to as spear-phishing, by using specific personal information to gain trust.

For the organization itself, the breach of financial statements and non-disclosure agreements poses a threat to its commercial reputation and could lead to potential legal consequences. The loss of confidential business documents can damage trust with existing clients and partners who rely on the firm's ability to maintain strict data confidentiality.

RansomHub is a Ransomware-as-a-Service (RaaS) group that emerged in early 2024. It gained notoriety for absorbing various affiliates following the activities of the ALPHV group. Notably, reports have indicated that the group's activities ceased in early 2025, which suggests that this specific leak may have occurred during the final stages of the group's operational processes.

To defend against such threats, organizations in the technology and software development sector can implement several defensive measures. Strengthening identity and access management (IAM) can prevent unauthorized users from accessing sensitive directories. Implementing robust data loss prevention (DLP) tools can help detect and block the unauthorized transfer of sensitive files. Additionally, maintaining regular, offline backups and conducting comprehensive security awareness training can help mitigate the impact of both the initial breach and subsequent extortion attempts.