Was SchwarzGrantz hit by ransomware?

SchwarzGrantz was listed by the raworld 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 raworld ransomware group?

raworld 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 SchwarzGrantz breach?

raworld published data attributed to SchwarzGrantz. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

Schwarz & Grantz

listed as SchwarzGrantz · Claimed by Raworld · listed 2 years ago

28m

Age

since listed · data leaked

Status timeline

ListedMar 23, 2024
Data leakeddate unknown

At a glance

Group: Raworld
Status: Data leaked
Country: Germany
Listed on leak site: Mar 23, 2024

About the victim

AI dossier — public-source company profile

Schwarz & Grantz is a technical building equipment and systems installation company based in Hamburg, Germany, operating for over 50 years. They provide comprehensive services in heating systems, refrigeration and air conditioning, sanitary systems, and room air technology, serving primarily the northern German region.

Industry: Building Systems Engineering & Installation
Address: Horner Landstraße 302–304, 22111 Hamburg, Germany

Attack summary

Severity: medium — Data has been marked as published by the raworld group, indicating confirmed exfiltration, but without access to the actual leak post or proof inventory, the sensitivity and scale of exposed data cannot be assessed. Default to medium pending verification of data contents.

No leak post content was captured. The disclosure status indicates data was published, but specific claims about encryption, exfiltration, or affected data categories cannot be verified from the available information.

medium

Sources

Victim siteschwarz-grantz.de/
Leak posthttp://raworldw32b2qxevn3gp63pvibgixr4v75z62etlptg3u3pmajwra4ad.onion/post/105005.html

Source

Indexed 2 years 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.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

Disclosure context

About raworld

Raworld is a relatively new ransomware group that emerged in May 2023, operating with primarily financial motivations and demonstrating a broad international targeting approach. The group's origin and specific affiliations remain unclear based on publicly available information, though their targeting patterns suggest they may operate independently rather than as part of a larger ransomware-as-a-service ecosystem. Limited public documentation exists regarding their specific attack methodologies, though their victim profile spanning multiple sectors including business services, technology, manufacturing, and healthcare suggests they likely employ opportunistic targeting rather than highly specialized initial access vectors. With 112 documented victims across major economies including Germany, the United States, United Kingdom, France, and Italy, Raworld has demonstrated significant operational capability despite their recent emergence, though specific details about notable high-profile attacks or law enforcement disruption efforts have not been widely reported by major threat intelligence organizations. As of current reporting, the group appears to remain active, though the limited public intelligence available makes definitive assessment of their operational status challenging. The group has been linked to 112 public disclosures across our corpus. First observed on a leak site on May 6, 2023; most recent post December 28, 2024. The operation is currently inactive.

Timeline of this disclosure

March 23, 2024SchwarzGrantz listed by raworldon the group's public leak site

Other recent disclosures by raworld

raworld has been linked to 112 public victims on Darkfield. A sample of the most recent:

See the full raworld dossier →

Sector and geography

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

If your organisation is affected

A listing by raworld means SchwarzGrantz 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 raworld'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.