Was Astrofein hit by ransomware?

Astrofein was listed by the Ransomhouse ransomware operation (Germany), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Ransomhouse ransomware group?

Ransomhouse is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Astrofein breach?

Ransomhouse published data attributed to Astrofein (~743 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Astro- und Feinwerktechnik Adlershof GmbH

listed as Astrofein · Claimed by Ransomhouse · listed 8 months ago

743 GB

Data size

$740

Ransom

demanded

Age

since listed · data leaked

Status timeline

ListedDec 1, 2025
Data leakeddate unknown

At a glance

Group: Ransomhouse
Status: Data leaked
Country: Germany
Listed on leak site: Dec 1, 2025
Data size: 743 GB
Ransom demanded: $740

About the victim

AI dossier — public-source company profile

Astro- und Feinwerktechnik Adlershof GmbH (ASTROFEIN) is a Berlin-based aerospace precision engineering company with over 25 years of experience developing and manufacturing high-precision space components and systems, including reaction wheels, CubeSat deployers (PicoSatellite Launchers), and attitude and orbit control system (AOCS) components. The company handles the full product lifecycle in-house, from engineering and precision manufacturing to environmental simulation and product qualification. ASTROFEIN holds DIN EN ISO 9001:2015 and DIN EN 9100:2018 certifications and counts itself among global market leaders for reaction wheels.

Industry: Aerospace & Space Technology Components Manufacturing
Address: Albert-Einstein-Straße 12, 12489 Berlin, Germany

Attack summary

Severity: critical — ASTROFEIN is a German aerospace and space technology manufacturer producing components for satellites and space systems, placing it within the defence-adjacent and critical technology sector. 743 GB of exfiltrated data from a dual-use aerospace company likely includes sensitive technical IP, export-controlled designs, and customer data from space agencies and defence-related clients, constituting a critical national security and IP risk.

RansomHouse claims to have encrypted systems and exfiltrated approximately 743 GB of data from ASTROFEIN. The group has published evidence of the attack on their leak site with the status marked as 'EVIDENCE' and data volume confirmed at 743 GB.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Engineering and technical design files
Aerospace component specifications
Business and operational data
Employee records
Customer and supplier information

What the group claims

ASTROFEIN develops, produces and tests components and systems for space. We focus on small satellites, attitude control, structures, mechanisms and payloads. The comprehensive knowledge, expertise and experience of the employees ensure a high quality standard in different fields of the space technologies. ASTROFEIN is one of the world's leading manufacturers of reaction wheels. A family of reaction wheels for small satellites was successfully launched on the market.

The leak post

captured from the group's site

```
{"data":[{"id":"a1894b76b7004c75a3a0845799af49956592e3d9","display":"animated","header":"HOT NEWS","info":" Trellix is a global cybersecurity company.","url":"","sort":1,"views":"436242"},{"id":"336b257f582b17573c97578efd4b22762bf77344","sort":2,"header":"Trellix (McAfee & FireEye)","url":"https://www.trellix.com/","private":"false","revenue":"1.5-2 B$","employees":"5000","info":"Trellix is a global cybersecurity company formed from the October 2021 merger of McAfee Enterprise and FireEye. It provides services to over 50,000 business and government customers worldwide, protecting more than 200 million endpoints. The companys open and native extended detection and response (XDR) platform helps organizations confronted by todays most advanced threats gain confidence in the protection and resilience of their operations. Trellix, along with an extensive partner ecosystem, accelerates technology innovation through machine learning and automation to empower over 40,000 business and government customers with living security","statusDate":"DEPENDS ON YOU","status":"EVIDENCE","published":"NOT YET","action":"Encrypted","actionDate":"17/04/2026","volume":"~","content":"cybersecurity.html"…

Sources

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.

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Disclosure context

About Ransomhouse

Ransomhouse is a ransomware group that emerged in June 2021, operating primarily for financial gain through extortion campaigns targeting organizations across multiple sectors globally. The group's origin and specific affiliations remain unclear based on publicly available intelligence, though their operational patterns suggest they function as an independent cybercriminal organization rather than a traditional ransomware-as-a-service model. Ransomhouse employs double extortion tactics, stealing sensitive data before deploying their ransomware payload and threatening to publish the information on their leak site if victims refuse to pay the demanded ransom. The group has demonstrated a broad targeting approach, with documented attacks against 187 victims primarily concentrated in the United States, China, United Kingdom, Italy, and Spain, focusing heavily on healthcare, technology, business services, and manufacturing sectors. While specific high-profile campaigns have not been extensively documented by major security firms, the group's consistent victim count and geographic distribution indicate sustained operational capability since their emergence. As of current reporting, Ransomhouse remains active with no known major law enforcement disruptions or confirmed rebranding efforts. The group has been linked to 210 public disclosures across our corpus. First observed on a leak site on June 1, 2021; most recent post June 29, 2026. The operation is currently active.

Also tracked as: RANSOM HOUSE.

Timeline of this disclosure

December 1, 2025Astrofein listed by Ransomhouseon the group's public leak site

Data size: 743 GB
Ransom demanded: $740

Sector and geography

Geographically, Astrofein is reported in Germany, a country with 926 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Ransomhouse means Astrofein appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CERT-Bund (Germany), as required for your jurisdiction.
Monitor for the data appearing on Ransomhouse's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.