DisclosureLens
GLOBALMalwareManufacturingManufacturingRansomwareSarcomaRansom DemandedActor NamedMedium

Thermofin

bd_896ce5df7503aaa1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Filed

Sep 23, 2025

To disclose

Affected

Not disclosed

Linked

2 filings

Confidence

50%
Full breach record for Thermofin

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: ManufacturingDiscovered: 2025-09-23

Source: Ransomware.live

Post text · scraped from the leak site

Thermofin Thermofin GmbH specializes in innovative and high-performance cooling solutions for various industries, including industrial refrigeration and air conditioning. Their product range includes evaporators, air coolers, heat pumps, and hybrid chillers, designed to cater to both commercial and industrial clients. Established in 2002, the company has continually expanded its production capabilities and invested in creating new jobs. With a commitment to quality management and technical expertise, Thermofin serves a broad customer base while maintaining a focus on sustainable growth and employee development.Geo: Germany - Leak size: 2.9 TB Archive - Contains: Files, SQL, Exchange

Incident timeline — mostly unverified

? — ?

Breach window unknown

Sep 23, 2025

Claim posted

Corroborated · see linked filings

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

Claim → filing

Compliance clock

Not assessable

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Filing propagation · 2 filings

View merged incident ↗
PressSep 23 · first
Leak SiteSep 23 · first · this page

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 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 →