Gran valle negocios Data Breach

On July 28, 2026, Qilin ransomware listed Gran valle negocios, an organization based in Argentina, on its dark web portal. A simultaneous check of stealer-log data associated with the domain granvallenegocios[.]com[.]ar revealed a significant and ongoing exposure of credentials. SOCRadar’s Dark Web Monitoring service identified this listing, with the organization falling under a general classification within the dataset. The exposure of credentials for Gran valle negocios is particularly concerning as Qilin ransomware commonly leverages such compromised credentials to gain initial access to victim networks. The group’s broad targeting makes any organization a potential victim, especially those with exposed access points. Qilin ransomware has been identified as the most active group tracked by SOCRadar, with 111 other victims claimed in the preceding 60 days, significantly outpacing its competitors. The group primarily targets organizations in the business services, manufacturing, and general/uncategorized sectors, with a strong concentration of victims in the United States, France, and Germany. Argentina is not typically a core focus for Qilin, making this listing a notable instance of the group’s expanding global reach. Recent victims in Argentina related to this pattern include Eana, Cafar, and Metal Sur Famin, while U.S. entities like Wilbert’s have also been targeted.

A check of stealer-log data for the domain granvallenegocios[.]com[.]ar uncovered a severe exposure of credentials. The query returned 14 records associated with four distinct corporate identities. Notably, one of these records was linked to a Microsoft 365 identity-provider endpoint, indicating the compromise of a live employee single-sign-on credential rather than a less significant account. The remaining records pair corporate usernames with third-party services and a municipal government portal. This presents a mixed exposure, including a direct compromise of the identity provider alongside a broader pattern of workstation compromise. The identified records span from mid-2025 through July 2026, with no evidence of password resets during this period. Infostealer logs are a critical component of Qilin’s operational tactics, enabling access brokers to source and validate corporate credentials. These credentials are subsequently used for initial access through platforms like Microsoft 365, VPNs, and remote-access portals before ransomware deployment. While the current findings do not definitively prove that these specific credentials were used by Qilin, the presence of a compromised Microsoft 365 identity-provider credential alongside multiple unrotated corporate accounts establishes a strong precursor for such an intrusion. Immediate recommended actions include forcing password resets for all affected accounts, auditing Microsoft 365 sign-in and Azure AD activity, conducting endpoint forensics on associated systems, and maintaining continuous monitoring for any further suspicious activity.

This report is intended for threat intelligence and security awareness purposes. SOCRadar does not host, redistribute or buy stolen data. All breach information reported here is collected from publicly accessible threat actor and ransomware portals. This content is intended to equip CTI teams with context around recent attacks. While we strive for accuracy, listings on ransomware leak and extortion sites cannot always be independently verified and may not reflect confirmed breaches. If you believe any data in this report is incorrect, please contact us.