Cyber Threat Intelligence
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Ransomware Victim Healthcare

Grupo SASMET

Ransomware attack by Arcusmedia · Disclosed May 15, 2024 · 🇧🇷 Brazil

sasmet.com.br

Date Disclosed
May 15, 2024
2024
Threat Group
Arcusmedia
109 total victims
Country
🇧🇷 Brazil
Industry
Healthcare

ThreatAI Analysis

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

About the Arcusmedia group

Arcus Media is a ransomware-as-a-service group that emerged in May 2024, employing double extortion with ChaCha20 + RSA-2048 encryption and recruiting affiliates via a referral-based vetting process, claiming 50+ victims across manufacturing, healthcare, retail, and business services globally. Arcusmedia has listed 107 victims since May 2024.

Incident Analysis

Grupo SASMET was targeted by Arcusmedia ransomware, one of the most active ransomware groups in our database with 109 confirmed victims globally. The attack was disclosed on May 15, 2024, when Grupo SASMET appeared on the group's dark web leak site.

Grupo SASMET is based in Brazil , operating in the Healthcare sector. Brazil ranks #7 globally for ransomware attacks, with 447 victims in our database.

Sector context: Healthcare organisations are high-value ransomware targets because patient data is extremely sensitive, regulatory penalties for breaches are severe, and operational downtime can threaten patient safety — all factors that increase ransom payment pressure.

Arcusmedia 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 6, 2026 00:00 UTC.

Frequently Asked Questions

Was Grupo SASMET attacked by ransomware?

Yes. Grupo SASMET was listed as a victim of the Arcusmedia ransomware group on May 15, 2024. The organisation is based in Brazil and operates in the Healthcare sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Grupo SASMET?

Grupo SASMET was attacked by Arcusmedia ransomware. Arcusmedia is one of the most active ransomware groups, having claimed 109 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Grupo SASMET ransomware attack occur?

The ransomware attack on Grupo SASMET was disclosed on May 15, 2024. 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 Grupo SASMET ransomware attack?

The specific data stolen from Grupo SASMET 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 Healthcare organisation, Grupo SASMET likely held patient records, medical data, and personally identifiable information (PII).

How can organisations protect against Arcusmedia attacks?

To defend against Arcusmedia 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.