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GLOBALMalwareGovernmentGovernmentRansomwareRhysidaRansom DemandedActor NamedMedium

Oregon Department of Human Services

bd_b9f5c3ec106aaa18 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Apr 15, 2025

To disclose

—

Affected

Not disclosed

Linked

2 records

Confidence

50%

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: Public SectorDiscovered: 2025-04-15

Source: Ransomware.live

Post text · scraped from the leak site

Oregon Department of Environmental Quality They think their data hasn't been stolen. They're sorely mistaken.Over 2.5 terabytes of unique data. (SQL, employee data and more)We are waiting for your suggestions.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Apr 15, 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 2 records about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

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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