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Operator dossier

Arcusmedia (also tracked as arcus media) is a ransomware operator no longer publishing new disclosures. Darkfield has indexed 105 public victims claimed by this operator between May 15, 2024 and July 14, 2026. Arcusmedia is a relatively new ransomware group that emerged in May 2024, operating with apparent financial motivations based on their targeting patterns across multiple countries and sectors. The group's origin and potential state affiliations remain unclear given limited public documentation from established threat intelligence sources, though their targeting of victims across Brazil, the United States, Spain, UAE, and Mexico suggests either a geographically distributed operation or deliberate international scope. With 98 documented victims in a short operational timeframe, Arcusmedia has demonstrated notable activity levels, primarily focusing on technology, business services, agriculture and food production, and transportation/logistics sectors, though their targeting appears opportunistic rather than strategically focused given the "Not Found" classification as their primary sector target. Limited public reporting from major cybersecurity firms and law enforcement agencies means specific details about their attack methodologies, initial access vectors, encryption techniques, or whether they employ double extortion tactics remain undocumented in authoritative sources. No major campaigns, high-profile victims, or significant law enforcement actions against Arcusmedia have been publicly reported by CISA, FBI, or established threat intelligence organizations. Current operational status appears active based on the recent emergence timeframe, though comprehensive threat intelligence profiles from reputable sources have not yet been published given the group's recent appearance in the threat landscape.

Most-targeted sectors

Most-affected countries

Recent disclosures by Arcusmedia

Most recent 98 of 105 indexed disclosures. Click any row for the full per-victim dossier.

See every disclosure indexed for Arcusmedia →

How we know this. Operator profiles on Darkfield are built from continuous monitoring of every leak site the group is known to operate, cross-correlated with community-curated feeds (RansomLook, ransomware.live, RansomWatch, MISP-galaxy). Status flips from active to inactive when no new disclosure appears for 60 days. MITRE ATT&CK mappings shown in the interactive section below are sourced from CISA, vendor analysis, and the MITRE community catalog — we attribute each technique back to its source. Aliases reflect operator re-brands and affiliate splits.

Inactive ransomware operator

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Arcusmedia

aka arcus media · 105 victims indexed · first seen 2 years ago · last activity 16 hours ago

105
Victims indexed
#71 of 364 tracked operators
2y 2m
Active period
May 2024 → Jul 2026
10
Countries hit
top Brazil · 19

At a glance

Status
inactive
Aliases
arcus media
First seen
2 years ago
Last activity
16 hours ago
Onion sites
1 known endpoint
Primary sector
Not Found · 37 hits

About

Arcusmedia is a relatively new ransomware group that emerged in May 2024, operating with apparent financial motivations based on their targeting patterns across multiple countries and sectors. The group's origin and potential state affiliations remain unclear given limited public documentation from established threat intelligence sources, though their targeting of victims across Brazil, the United States, Spain, UAE, and Mexico suggests either a geographically distributed operation or deliberate international scope. With 98 documented victims in a short operational timeframe, Arcusmedia has demonstrated notable activity levels, primarily focusing on technology, business services, agriculture and food production, and transportation/logistics sectors, though their targeting appears opportunistic rather than strategically focused given the "Not Found" classification as their primary sector target. Limited public reporting from major cybersecurity firms and law enforcement agencies means specific details about their attack methodologies, initial access vectors, encryption techniques, or whether they employ double extortion tactics remain undocumented in authoritative sources. No major campaigns, high-profile victims, or significant law enforcement actions against Arcusmedia have been publicly reported by CISA, FBI, or established threat intelligence organizations. Current operational status appears active based on the recent emergence timeframe, though comprehensive threat intelligence profiles from reputable sources have not yet been published given the group's recent appearance in the threat landscape.

References

5 links

External sources curated by the MISP threat-intel community.

Timeline

13 months
2024-05-01T00:00:00+00:00 · 112024-06-01T00:00:00+00:00 · 152024-07-01T00:00:00+00:00 · 22024-09-01T00:00:00+00:00 · 92024-10-01T00:00:00+00:00 · 62024-11-01T00:00:00+00:00 · 72024-12-01T00:00:00+00:00 · 82025-02-01T00:00:00+00:00 · 52025-03-01T00:00:00+00:00 · 142025-05-01T00:00:00+00:00 · 82025-07-01T00:00:00+00:00 · 82025-08-01T00:00:00+00:00 · 12025-09-01T00:00:00+00:00 · 4
2024-05-01T00:00:00+00:002025-09-01T00:00:00+00:00

Top countries

🇧🇷 Brazil
19
🇺🇸 United States
11
🇪🇸 Spain
6
🇦🇪 UAE
4
🇲🇽 Mexico
3
🇮🇹 Italy
3
🇩🇪 Germany
2
🇬🇧 United Kingdom
2
Brazil dossier →United States dossier →Spain dossier →UAE dossier →

Top sectors

Technology
16
Business Services
16
Agriculture and Food Production
6
Transportation/Logistics
5
Healthcare
4
Manufacturing
4
Education
2
Construction
2
Technology dossier →Business Services dossier →Agriculture and Food Production dossier →Transportation/Logistics dossier →

MITRE ATT&CK

5 techniques · 4 tactics

Tactics

Initial AccessExecutionDefense EvasionImpact

Techniques

  • T1566Phishing
  • T1190Exploit Public-Facing Application
  • T1204User Execution
  • T1027Obfuscated Files or Information
  • T1486Data Encrypted for Impact

Recent victims

Loading…

Onion infrastructure

1 known
  • http://arcuufpr5xxbbkin4mlidt7itmr6znlppk63jbtkeguuhszmc5g7qdyd.onion

Source

Updated 16 hours ago

Data on this page is sourced from the group's own leak posts, cross-checked with public ransomware trackers (RansomLook, ransomware.live, RansomWatch), MITRE ATT&CK, and our own Tor and Telegram crawlers. This is a public observatory page — share freely.

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