Disclosure context

About obscura

Obscura is a recently emerged ransomware group that was first observed in September 2025, operating with apparent financial motivations based on their targeting patterns across multiple sectors and geographic regions. The group has compromised at least 33 known victims since their emergence, demonstrating rapid operational capabilities despite their recent entry into the ransomware landscape. Limited public documentation exists regarding their country of origin, operational structure, or affiliations with established ransomware families, though their targeting pattern suggests either opportunistic attacks or access to diverse initial compromise vectors. Their victim profile spans multiple sectors including healthcare, technology, manufacturing, and construction, with geographic focus on the United States, Malaysia, Portugal, Egypt, and Denmark, indicating either broad targeting criteria or access to varied attack infrastructure across different regions. Due to the group's recent emergence and limited public reporting from major security vendors and law enforcement agencies, specific details regarding their technical capabilities, encryption methods, data exfiltration practices, or ransom demands remain undocumented in open-source intelligence. The group appears to remain active as of late 2025, though insufficient time has elapsed to determine their long-term operational sustainability or potential law enforcement attention. The group has been linked to 33 public disclosures across our corpus. First observed on a leak site on September 5, 2025; most recent post January 11, 2026. The operation is currently active.

Timeline of this disclosure

September 19, 2025Espectral listed by obscuraon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, Espectral is reported in PT, a country with 4 ransomware disclosures in our corpus.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.

Ransomware victim disclosure

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Espectral

Claimed by obscura · listed 8 months ago

Age

since listed · data leaked

Status timeline

Listed
Sep 19, 2025
Data leaked

At a glance

Group: obscura
Status: Data leaked
Country: PT
Sector: Not Found
Listed on leak site: Sep 19, 2025

About the victim

AI dossier — public-source company profile

Espectral is a Portuguese company specialising in the supply and calibration of testing and measurement equipment across sectors including telecommunications, finance, healthcare, education, government, and avionics. Their portfolio covers general electronics, protocol testing equipment (e.g. PCI Express, USB), and calibration services. Founded in 1987, they serve a diverse clientele including government bodies, industrial clients, and laboratories, with a stated focus on emerging technologies such as 5G.

Industry: Testing & Measurement Equipment and Calibration Services
Founded: 1987

Attack summary

Severity: high — Data has been confirmed as published (data_published status) and the company serves regulated and sensitive sectors including healthcare, government, and avionics/defence-adjacent clients, raising the risk profile of any exfiltrated data significantly.

The ransomware group Obscura claims to have published data exfiltrated from Espectral; the post is classified as data_published, indicating that data has been disclosed rather than merely threatened. No specific data volume or encryption claim is detailed in the available post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Company business data
Client records (government, industry, laboratories)
Internal operational documents

What the group claims

Espectral specializes in providing testing and measurement equipment, focusing on sectors such as telecommunications, finance, healthcare, and education. Their product offerings include calibration services for various parameters, general electronics, and advanced testing equipment for protocols like PCI Express and USB. Established in 1987, the company aims to be a partner for future technological advancements, particularly in 5G and avionics. They cater to a diverse clientele, including government, industry, and laboratories.

Sources

Leak posthttp://obscurad3aphckihv7wptdxvdnl5emma6t3vikcf3c5oiiqndq6y6xad.onion/company.html?company=espectral

Source

Indexed 8 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.