Estrategias BigMat S.L.U.
bd_f9b54c1ad097dbfe · schema v1 · pii pii-v2
Full breach record for Estrategias BigMat S.L.U. →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Aurora on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.
Source: Ransomware.live
Post text · scraped from the leak site
[distribution] Estrategias BigMat S.L.U. — the Spanish master franchisee of BigMat International, a French cooperative and one of Europe's largest building materials distribution networks. 624 SEPA payroll XML files (2022–2025) — every monthly salary payment for 300–500 employees across 15+ entities, with full names, DNI/NIE numbers, IBANs, and exact euro amounts. 20 SILTRA Social Security databases — the complete filing history for every subsidiary's workforce, containing números de afiliación, contribution bases, and employment records. <redacted> 2,690 customer loyalty cards with DNI/NIF identifiers — the entire customer-identity database. 888 Modelo 347 tax notifications — annual declarations to the Agencia Tributaria naming customers and suppliers with their DNI and transaction amounts. Complete financial records — 5 years of accounting journals, bank reconciliations, insurance policies, loan agreements, and invoices. Occupational health data (PRL) for 12+ subsidiaries — workplace injury reports, medical certificates, and risk assessments.
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Oct 14, 2026
Claim posted
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No filing yet · watching
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
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Compliance clock
Not assessable
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.
No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.
Source ceiling
- actor name
- victim claim
- ransom/leak status
- discovery date
- materiality
- notification
- affected count
- confirmed data types
- compliance clock
The ✕ fields stay blank until a regulatory filing or victim disclosure lands.
aurora
According to ransomware.live, Aurora is a ransomware group associated with a multi-purpose Go-based malware distributed by multiple criminal teams from mid-2022, also sold as an infostealer/botnet under the same name on underground forums.