Ransomware group aurora hits Planungsgruppe M+M AG
Planungsgruppe M+M AG — a professional services target operating in CH has been listed by the aurora ransomware group on 2026-08-17. The information below reflects what the threat actor has publicly claimed on their leak site; the details have not been independently verified.
Incident Report
| Target Organization | Planungsgruppe M+M AG |
|---|---|
| Threat Group | aurora |
| Summary | 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: approximately €52 million. The firm provides architecture, urban planning, structural engineering, building physics, fire protection, BIM, landscape planning, and interior design services. Over 5,200 projects completed across decades of operation. The exfiltrated dataset spans two complete file servers (MMBB04, MMBB05), plus the DATEV financial processing archives, SFirm banking software databases, the ELO document management system, Outlook email archives (PSTs), and payroll/HR data — a total of 268 GB across approximately 124,000 files, covering 2006 to 2026. |
| Date of Breach | 2026-08-17 |
| Discovery Date | 2026-08-17 |
| Region | CH |
| Target Domain | Planungsgruppe M+M AG |
| Business Sector | Professional Services |
| Severity | MEDIUM |
Claim by aurora
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: approximately €52 million. The firm provides architecture, urban planning, structural engineering, building physics, fire protection, BIM, landscape planning, and interior design services. Over 5,200 projects completed across decades of operation. The exfiltrated dataset spans two complete file servers (MMBB04, MMBB05), plus the DATEV financial processing archives, SFirm banking software databases, the ELO document management system, Outlook email archives (PSTs), and payroll/HR data — a total of 268 GB across approximately 124,000 files, covering 2006 to 2026.
Posted by the aurora threat actor on its public leak site. This is the group's own statement and has not been independently verified by HackerFeeds.
Sources
Victim website
Planungsgruppe M+M AG
Leak post (onion / Tor)
http://u6lieui2dakbctcjea2bz4r4q32r7t36nwljovqbv7mxs6o2smgxixid.onion/blog/planungsgruppe-mm-ag-3eb2a03f
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Disclaimer
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