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

December 10, 2025häussermann stauden gehölze gmbh listed by brotherhoodon the group's public leak site

Data size: 1 GB

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. Geographically, häussermann stauden gehölze gmbh is reported in Germany, a country with 695 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

← All victims

Häussermann Stauden+Gehölze GmbH

listed as häussermann stauden gehölze gmbh · Claimed by brotherhood · listed 5 months ago

1 GB

Data size

Age

since listed · data leaked

Status timeline

Listed
Dec 10, 2025
Data leaked

At a glance

Group: brotherhood
Status: Data leaked
Country: Germany
Sector: Not Found
Listed on leak site: Dec 10, 2025
Data size: 1 GB

About the victim

AI dossier — public-source company profile

Häussermann Stauden+Gehölze GmbH is one of Germany's leading producers of perennials, shrubs, and trees, operating from Möglingen near Stuttgart. The company cultivates plants across more than 50 hectares of growing areas for municipalities, private gardens, and public spaces, and sells via trade customers as well as its own online shop and garden centre (CampoVerde).

Industry: Horticulture & Nursery Production
Address: Im Kornfeld 4, 71696 Möglingen, Germany

Attack summary

Severity: high — Data has been confirmed as published (not merely listed), with 27 GB total of exfiltrated company data released or offered for sale; the free tier alone confirms active exfiltration of business data at meaningful scale.

The Brotherhood ransomware group claims to have exfiltrated data from Häussermann Stauden+Gehölze GmbH, publishing 1 GB of compressed files freely and advertising a further 26 GB of compressed files behind a paywall.

high

Data the group says was taken

AI dossier — extracted from the leak post

1 GB compressed free files
26 GB compressed paid files

What the group claims

Contains: 1 Gb Compressed Free Files, 26 Gb Compressed Paid Files

Sources

Victim sitehaeussermann.com

Source

Indexed 5 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.