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Planungsgruppe M+M AG

Claimed by AUR0RA · listed 4 hours ago

268 GB
Data size
approximately 124,000 files, 432 employees records
Today
Age
since listed · data leaked

Status timeline

  1. ListedAug 20, 2026
  2. Data leakeddate unknown

At a glance

Group
AUR0RA
Status
Data leaked
Country
Germany
Sector
Architecture / Engineering / Planning
Listed on leak site
Aug 20, 2026
Data size
268 GB
Records
approximately 124,000 files, 432 employees

About the victim

AI dossier — public-source company profile

Planungsgruppe M+M AG is a German architecture and engineering firm headquartered in Böblingen, Baden-Württemberg, with approximately 432 employees across 10 offices. The firm provides architecture, urban planning, structural engineering, building physics, fire protection, BIM, landscape planning, and interior design services, with over 5,200 completed projects spanning decades.

Industry
Architecture, Urban Planning & Structural Engineering
Address
Böblingen, Baden-Württemberg, Germany (headquarters); 10 offices in Böblingen, Stuttgart, München, Nürnberg, Regensburg, Ingolstadt, Augsburg, Esslingen, Mannheim, Frankfurt
Employees
432

Attack summary

Severity: critical — Exfiltration of 268 GB confirmed with complete financial systems (banking, accounting, payroll), employee personal data (289 staff directories, HR records), and banking credentials/software databases. Sensitive PII at scale combined with financial infrastructure compromise.

AUR0RA claims to have exfiltrated two complete file servers (MMBB04, MMBB05) plus financial, banking, document management, email, and payroll systems. The dataset spans 268 GB of approximately 124,000 files covering 2006–2026, including employee directories, financial records, banking credentials, and HR data.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • Employee home directories (289 staff)
  • DATEV financial/accounting archives
  • SFirm banking software databases
  • ELO document management system exports
  • Outlook email archives (PSTs)
  • Payroll and HR records
  • Project documentation
  • Banking credentials and configurations

What the group claims

German Aktiengesellschaft headquartered in Böblingen, Baden-Württemberg, with approximately 432 employees across 10 offices. Annual revenue approximately €52 million. Provides architecture, urban planning, structural engineering, building physics, fire protection, BIM, landscape planning, and interior design services.

The leak post

captured from the group's site
[ Primed Halberstadt Medizintechnik GmbH — a German manufacturer of medical devices founded in 1946 and now part of the PE-backed PP Medtech group (Wiesmann & Co. KG). The exfiltration captured four entire server volumes: Daten (883 GB) — File server: 289 employee home directories (547 GB), Czech subsidiary data (66 GB), production processes (162 GB), machine configurations (81 GB) EE (807 GB) — Enterprise system: Apollo ERP, VBANK banking (8 accounts), complete database backup (100.6 GB, dated June 3), product images WINDVSW1 (344 GB) — Windows server: DATEV accounting (115+ data directories including LODAS payroll), bank transfers, DMS exports dmsscan (12 GB) — Scanned documents from 51+ employee DMS mailboxes A database backup (spiel.zip.001–010, 100.6 GB) was created on 2026-06-03 ](http://u6lieui2dakbctcjea2bz4r4q32r7t36nwljovqbv7mxs6o2smgxixid.onion/blog/primed-halberstadt-medizintechnik-b278bad0)[ Planungsgruppe M+M AG is a German Aktiengesellschaft headquartered in Böblingen, Baden-Württemberg, with approximately 432 employees across 10 offices (Böblingen, Stuttgart, München, Nürnberg, Regensburg, Ingolstadt, Augsburg, Esslingen, Mannheim, Frankfurt). Annual revenue: approx…

Data the group says was taken

  • file server data
  • DATEV financial archives
  • SFirm banking software databases
  • ELO document management system
  • Outlook email archives (PST)
  • payroll/HR data

Screenshot of the leak post

Leak screenshot for Planungsgruppe M+M AG

Sources

Source

Indexed 4 hours 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 AUR0RA

AUR0RA is a ransomware group first observed in June 2026 with an apparent financial motivation, having claimed responsibility for attacks against at least five known victims across the United States, Canada, and Australia. Given the recency of the group's emergence and the limited number of confirmed victims, detailed public attribution from major threat intelligence organizations such as CISA, the FBI, or Mandiant has not yet been established, and as such claims regarding origin, affiliation, or operational infrastructure cannot be responsibly made at this time. The group's targeting pattern suggests a deliberate focus on mid-market industries including commercial interiors, real estate and title insurance, warehousing and material handling, manufacturing, and oil and gas and industrial manufacturing sectors, which may indicate an opportunistic selection strategy or a preference for organizations with potentially sensitive operational or financial data and limited cybersecurity maturity. No specific attack methodology, tooling, or extortion tactics have been publicly documented by reputable sources for this group as of the time of this writing, though the sector targeting profile is consistent with groups known to conduct double extortion operations. AUR0RA should be considered an emerging threat actor under active monitoring, with its current operational status assessed as active based on the recency of first observed activity and the absence of any publicly reported law enforcement disruption or disbandment. The group has been linked to 10 public disclosures across our corpus. First observed on a leak site on June 6, 2026; most recent post August 20, 2026. The operation is currently active.

Timeline of this disclosure

  • August 20, 2026Planungsgruppe M+M AG listed by AUR0RAon the group's public leak site
Data size
268 GB
Records
approximately 124,000 files, 432 employees

Other recent disclosures by AUR0RA

AUR0RA has been linked to 10 public victims on Darkfield. A sample of the most recent:

See the full AUR0RA dossier →

Sector and geography

This disclosure adds to ransomware activity in the Architecture / Engineering / Planning sector. Geographically, Planungsgruppe M+M AG is reported in Germany, a country with 926 ransomware disclosures in our corpus.

If your organisation is affected

A listing by AUR0RA means Planungsgruppe M+M AG 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 AUR0RA'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.