DisclosureLens
GLOBALMalwareConstructionConstructionRansomwareSarcomaRansom DemandedActor NamedMedium

Importadora Monterrey SRL

bd_de89b8a77d603f88 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Filed

Jul 9, 2024

To disclose

Affected

Not disclosed

Confidence

50%
Full breach record for Importadora Monterrey SRL

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Sarcoma 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.

Group activity: ConstructionDiscovered: 2025-03-22

Source: Ransomware.live

Post text · scraped from the leak site

Importadora Monterrey SRL We provide steel solutions for civil construction, with excellent quality products, accompanied by a specialized technical advisory service in the hands of professionals in the field. Our steel has the backing of the world's No. 1 steel company, ArcerlorMittal. Our star product, corrugated steel or corrugated rod, is a type of laminated steel designed especially to build reinforced concrete structural elements. These are steel bars that have protrusions or corrugations that improve adhesion to the concrete, and have great ductility, which allows the bars to be cut and bent more easily. Among other products we have corrugated corrugated iron sheets, tile type and trapezoidal, with colors to choose from, nail factory, wheelbarrow factory, barbed wire, galvanized wire, PVC doors and windows, the BELGO PRONTO iron cutting and bending service, the entire range of the SOLDEXA welding line and the TAURO welding machines, as for new products we have the plastic separators of the COPLAS brand. The separator is a small piece whose very important mission is to place the steel of the reinforcement perfectly housed within the concrete until it sets.Geo: Bolivia - Leak size: 34.6 GB Archive - Contains: Files

Incident timeline — mostly unverified

? — ?

Breach window unknown

Jul 9, 2024

Claim posted

No filing yet · watching

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Claim → filing

Compliance clock

Not assessable

Tracked as a single-filing incident — the only disclosure on record for this event so far.Unverified claimView incident

Evidence ladder

Leak-site claimThis record

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

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.

About this groupFirst seen 2024-07-09

sarcoma

According to ransomware.live, Sarcoma is a ransomware group that debuted in October 2024, immediately ranking among the top three most active groups globally and surpassing 116 documented victims by mid-2025, targeting mid-market companies across manufacturing, retail, healthcare, legal, and business services with roughly 50% of victims in the United States.

141 victims claimed globally141 tracked hereFull profile →