Disclosure context

About Arcusmedia

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. The group has been linked to 98 public disclosures across our corpus. First observed on a leak site on May 15, 2024; most recent post September 17, 2025. The operation is currently inactive.

Also tracked as: arcus media.

Timeline of this disclosure

September 16, 2025Announcement 16-09-2025 listed by Arcusmediaon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.

Ransomware victim disclosure

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Announcement 16-09-2025

Claimed by Arcusmedia · listed 8 months ago

Age

since listed · data leaked

Status timeline

Listed
Sep 16, 2025
Data leaked

At a glance

Group: Arcusmedia
Status: Data leaked
Sector: Not Found
Listed on leak site: Sep 16, 2025

About the victim

AI dossier — public-source company profile

No identifiable company information is available from the leak post or public site. The post appears to be a group announcement or rebranding notice rather than a specific victim disclosure.

Attack summary

Severity: low — No identifiable victim, no proof files, no data described, and no operational impact stated; the post is a group rebranding announcement rather than a victim disclosure.

The post appears to be an internal announcement by the Arcusmedia ransomware group indicating they are rebranding, rather than a claim of a specific attack on a named victim. No specific exfiltration or encryption actions are described.

low

What the group claims

Hey , We have been offline for weeks .we taught it is time to rebrand our Project And try …

Sources

Leak posthttp://arcuufpr5xxbbkin4mlidt7itmr6znlppk63jbtkeguuhszmc5g7qdyd.onion/?p=547

Source

Indexed 8 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.