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Ransomware Victim

contreras.com.ar

Ransomware attack by Lockbit5 · Disclosed September 8, 2026 · 🇦🇷 Argentina

contreras.com.ar

Date Disclosed
Sep 8, 2026
2026
Threat Group
Lockbit5
358 total victims
Country
🇦🇷 Argentina
Industry
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ThreatAI Analysis

Compiled from this incident record and the threat intelligence profile for Lockbit5. Figures and technique mappings are quoted from the source data, not inferred.

Lockbit5 listed contreras.com.ar on its dark web leak site on 8 September 2026. Founded in 1947 by the Contreras brothers, the company has continuously evolved and modernized focussing on services for manufacturing industries.

About contreras.com.ar

Founded in 1947 by the Contreras brothers, the company has continuously evolved and modernized, focu...

Source record: ransomware.live

About the Lockbit5 group

LockBit 5.0 ("ChuongDong") emerged in September 2025 as the group's resurgence following the February 2024 law enforcement takedown, introducing cross-platform payloads targeting Windows, Linux, and VMware ESXi with enhanced evasion capabilities and continuing the RaaS affiliate model of its predecessors. Lockbit5 has listed 355 victims since April 2023.

Incident Analysis

contreras.com.ar was targeted by Lockbit5 ransomware, one of the most active ransomware groups in our database with 358 confirmed victims globally. The attack was disclosed on September 8, 2026, when contreras.com.ar appeared on the group's dark web leak site.

contreras.com.ar is based in Argentina . Argentina ranks #16 globally for ransomware attacks, with 172 victims in our database.

Lockbit5 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 — 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: Sep 10, 2026 10:00 UTC.

Frequently Asked Questions

Was contreras.com.ar attacked by ransomware?

Yes. contreras.com.ar was listed as a victim of the Lockbit5 ransomware group on September 8, 2026. The organisation is based in Argentina. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked contreras.com.ar?

contreras.com.ar was attacked by Lockbit5 ransomware. Lockbit5 is one of the most active ransomware groups, having claimed 358 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the contreras.com.ar ransomware attack occur?

The ransomware attack on contreras.com.ar was disclosed on September 8, 2026. 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 contreras.com.ar ransomware attack?

The specific data stolen from contreras.com.ar 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. Sensitive business data was likely targeted.

How can organisations protect against Lockbit5 attacks?

To defend against Lockbit5 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.