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Ransomware Victim Energy

HIDROCARBUROS ARGENTINOS S.A.

Ransomware attack by Blacklock ยท Disclosed May 16, 2025 ยท ๐Ÿ‡ฆ๐Ÿ‡ท Argentina

hasa-arg.com

Date Disclosed
May 16, 2025
2025
Threat Group
Blacklock
64 total victims
Country
๐Ÿ‡ฆ๐Ÿ‡ท Argentina
Industry
Energy

Incident Analysis

HIDROCARBUROS ARGENTINOS S.A. was targeted by Blacklock ransomware, one of the most active ransomware groups in our database with 64 confirmed victims globally. The attack was disclosed on May 16, 2025, when HIDROCARBUROS ARGENTINOS S.A. appeared on the group's dark web leak site.

HIDROCARBUROS ARGENTINOS S.A. is based in Argentina , operating in the Energy sector. Argentina ranks #17 globally for ransomware attacks, with 152 victims in our database.

Sector context: Energy sector attacks can have critical infrastructure implications. Ransomware on operational technology (OT) networks can disrupt power generation and distribution, elevating the urgency of recovery.

Blacklock typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats โ€” paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Aug 5, 2026 06:00 UTC.

Frequently Asked Questions

Was HIDROCARBUROS ARGENTINOS S.A. attacked by ransomware?

Yes. HIDROCARBUROS ARGENTINOS S.A. was listed as a victim of the Blacklock ransomware group on May 16, 2025. The organisation is based in Argentina and operates in the Energy sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked HIDROCARBUROS ARGENTINOS S.A.?

HIDROCARBUROS ARGENTINOS S.A. was attacked by Blacklock ransomware. Blacklock is one of the most active ransomware groups, having claimed 64 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the HIDROCARBUROS ARGENTINOS S.A. ransomware attack occur?

The ransomware attack on HIDROCARBUROS ARGENTINOS S.A. was disclosed on May 16, 2025. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the HIDROCARBUROS ARGENTINOS S.A. ransomware attack?

The specific data stolen from HIDROCARBUROS ARGENTINOS S.A. has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Energy organisation, HIDROCARBUROS ARGENTINOS S.A. likely held sensitive business data, client information, and operational records.

How can organisations protect against Blacklock attacks?

To defend against Blacklock and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.