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GLOBALMalwareHealthcareHealthcareRansomwareBeastRansom DemandedActor NamedData ExfiltratedData Leak ThreatenedData PublishedHigh

Huron Regional Medical Center

bd_842ffccecd8ab066 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

May 31, 2025

To disclose

—

Affected

Not disclosed

Linked

6 records

Confidence

50%
Full breach record for Huron Regional Medical Center →

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Beast 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: HealthcareClaimed data size: 800GBDiscovered: 2025-08-21

Source: Ransomware.live

Post text · scraped from the leak site

HRMC is a private, not-for-profit organization. When the ownership of Huron's hospital passed from the Fransciscan Sisters to a locally-owned, private corporation (Huron Regional Medical Center, Inc.) in 1978, those involved in the purchase wanted to ensure Huron's community hospital would be governed by a board of directors reflecting a broad-base of the community. The volunteer board consists of three members recommended by the medical staff, one recommended by the City of Huron and one recommended by the Beadle County Commission. The other board members are elected at-large. Each board member is elected for a three-year term and can serve up to three consecutive terms. The property, funds, affairs and business of HRMC are managed by the board of directors, which is vested with the powers and authority conferred by the laws of South Dakota.

Incident timeline — mostly unverified

? — ?

Breach window unknown

May 31, 2025

Claim posted

—

Corroborated · see linked filings

This record's own dates cannot anchor compliance clocks; see the linked filings.

Claim → filing

—

Compliance clock

Not assessable

This leak-site claim is one of 6 records about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Show 1 more filing ↓up to 101d gap

Filing propagation · 5 filings · 5 states

View merged incident ↗

Pattern: first filing Jun 6 (SD), last Sep 9 (IN) — a 95-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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.

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 2023-12-19

beast

According to ransomware.live, Beast is a Ransomware-as-a-service (RaaS) product which provides functionality such as SMB scanning, file encryption, service and process starting and stopping, and geographic identification to avoid encryption in CIS countries.

73 victims claimed globally73 tracked hereFull profile →