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GLOBALMalwareEnergy & UtilitiesUtilitiesRansomwareMedusalockerRansom DemandedActor NamedMedium

Usenergy Lda

bd_f45a30ef4d211abb · schema v1 · pii pii-v1

Severity

Medium

Discovered

Filed

Sep 14, 2025

To disclose

Affected

Not disclosed

Confidence

50%
Full breach record for Usenergy Lda

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Medusalocker 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: EnergyDiscovered: 2025-09-14

Source: Ransomware.live

Post text · scraped from the leak site

Price-$120000 (sale in one hand there are options for making a profit from these files will be included in the deal)

Incident timeline — mostly unverified

? — ?

Breach window unknown

Sep 14, 2025

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 2021-11-03

medusalocker

According to ransomware.live, Medusa is a DDoS bot written in .NET 2.0. In its current incarnation its C&C protocol is based on HTTP, while its predecessor made use of IRC.

94 victims claimed globally94 tracked hereFull profile →