DisclosureLens
GLOBALMalwareHealthcareHealthcareRansomwareRhysidaRansom DemandedActor NamedData Leak ThreatenedData PublishedHigh

Cookeville Regional Medical Center

bd_0f974ae893d48768 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Jul 13, 2025

To disclose

—

Affected

Not disclosed

Linked

6 records

Confidence

50%
Full breach record for Cookeville Regional Medical Center →2 incidents on file

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Rhysida 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: HealthcareDiscovered: 2025-08-02

Source: Ransomware.live

Post text · scraped from the leak site

Cookeville Regional Medical Center At Cookeville Regional Medical Center, we are dedicated to providing the highest quality care to our patients and making a positive impact on our community.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Jul 13, 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 278d gap

Filing propagation · 5 filings · 5 states

View merged incident ↗
Maine State AGApr 14 · first
Massachusetts State AGApr 14 · first
Nebraska State AGApr 14 · first
New Hampshire State AGApr 14 · first

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 2023-06-05

rhysida

According to ransomware.live, Rhysida is a ransomware-as-a-service (RAAS) group that emerged in May 2023. The group utilizes a namesake ransomware through phishing attacks and Cobalt Strike to breach the targets' networks and deploy their payloads. The group threatens to publicly distribute exfiltrated data if the ransom is not paid, and it's worth mentioning that Rhysida is still in the early stages of development. The ransomware leaves PDF notes in the affected folders, instructing victims to contact the group through its portal, and payment is made via Bitcoin. After encryption, the ransomware appends the extension '.ryshida' to encrypted files. Source: https://github.com/crocodyli/ThreatActors-TTPs

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