Disclosure context

About brotherhood

The Brotherhood ransomware group is a recently emerged financially-motivated cybercriminal organization first observed in October 2025, representing one of the newer entrants in the ransomware landscape. Given the group's recent emergence and limited public documentation from major security firms and law enforcement agencies, detailed information about their origin, country of operation, and specific affiliations remains largely unknown to open-source intelligence. Based on observed targeting patterns, the group appears to employ opportunistic attack methodologies, focusing primarily on English-speaking markets including the United States, Australia, and Canada, while also targeting victims in Germany and Switzerland, suggesting either broad-spectrum initial access capabilities or acquisition of access through underground markets. Their victim selection spans multiple sectors including business services, construction, transportation and logistics, and technology companies, indicating a non-discriminatory approach typical of many financially-motivated ransomware operations rather than targeted campaigns against specific industries. With only 18 documented victims since their October 2025 emergence, Brotherhood represents a relatively small-scale operation compared to established ransomware groups, and specific details regarding their encryption methods, data exfiltration practices, or extortion tactics have not been publicly documented by major threat intelligence providers. The group remains active as of the latest available intelligence, though their limited operational footprint and recent emergence means comprehensive analysis of their tactics, techniques, and procedures awaits further documentation by security researchers and law enforcement agencies. The group has been linked to 18 public disclosures across our corpus. First observed on a leak site on October 10, 2025; most recent post January 6, 2026. The operation is currently active.

Timeline of this disclosure

November 15, 2025Spoleta Construction listed by brotherhoodon the group's public leak site

Data size: 4 GB

Sector and geography

This disclosure adds to ransomware activity in the Construction sector, which has 415 disclosures indexed across all operators we track. Geographically, Spoleta Construction is reported in United States, a country with 7,392 ransomware disclosures in our corpus.

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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Spoleta Construction

Claimed by brotherhood · listed 6 months ago

4 GB

Data size

Age

since listed · data leaked

Status timeline

Listed
Nov 15, 2025
Data leaked

At a glance

Group: brotherhood
Status: Data leaked
Country: United States
Sector: Construction
Listed on leak site: Nov 15, 2025
Data size: 4 GB

About the victim

AI dossier — public-source company profile

Spoleta Construction is a Rochester, NY-based firm offering construction, development, and real estate services. The company operates across multiple verticals including construction management and real estate, and maintains a project portfolio and bid center. It appears to be a regional contractor and developer serving the upstate New York market.

Industry: Construction, Real Estate Development & Property Management
Address: Rochester, NY, United States

Attack summary

Severity: high — Data has already been published (disclosed status: data_published) with 4 GB freely accessible and 33 GB additional files plus a database available, confirming active exfiltration and public exposure of potentially sensitive business and financial records from a construction and real estate firm.

The Brotherhood ransomware group claims to have exfiltrated data totalling approximately 37 GB (compressed), split between 4 GB of freely published files and 33 GB of paywalled files, along with a database; the post indicates data has been published rather than merely announced.

high

Data the group says was taken

AI dossier — extracted from the leak post

Company database
Free-tier exfiltrated files (4 GB compressed)
Paid-tier exfiltrated files (33 GB compressed)

What the group claims

Contains: 4 Gb compressed Free Files + 33 Gb compressed Paid Files, Database

Sources

Victim sitespoleta.com

Source

Indexed 6 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.