Disclosure context

About stormous

Stormous is a relatively new ransomware group that emerged in March 2022, operating primarily with financial motivations and has claimed responsibility for attacks against at least 165 victims across multiple countries and sectors. The group's country of origin remains unclear from publicly documented sources, though their operational patterns suggest they may operate as an independent entity rather than a established ransomware-as-a-service model. Limited public documentation from major security firms indicates the group employs common ransomware tactics, though specific details about their initial access vectors, encryption methods, and data exfiltration practices have not been extensively detailed in reports from CISA, FBI, or major threat intelligence providers. Their targeting appears geographically diverse with a focus on Spain, the United States, France, UAE, and Brazil, while showing particular interest in technology, hospitality and tourism, government, and business services sectors, though many of their victims span unspecified industries. As of current reporting, Stormous appears to remain an active threat, though the limited public documentation suggests they operate as a lower-tier ransomware group compared to more prominent families that receive extensive coverage from major security research organizations. The group has been linked to 220 public disclosures across our corpus. First observed on a leak site on March 22, 2022; most recent post May 13, 2026. The operation is currently active.

Timeline of this disclosure

May 2, 2026Ministry of Energy and Mines (Cuba) - STORMOUS + GhostSec listed by stormouson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Energy sector, which has 374 disclosures indexed across all operators we track. Geographically, Ministry of Energy and Mines (Cuba) - STORMOUS + GhostSec is reported in CU.

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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Ministry of Energy and Mines (Cuba) - STORMOUS + GhostSec

Claimed by stormous · listed 19 days ago

18d

Age

since listed · data leaked

Status timeline

Listed
May 2, 2026
Data leaked

At a glance

Group: stormous
Status: Data leaked
Country: CU
Sector: Energy
Listed on leak site: May 2, 2026

About the victim

AI dossier — public-source company profile

The Ministry of Energy and Mines of Cuba is a government ministry established on December 3, 2012 by agreement of the Council of Ministers of the Republic of Cuba. It is responsible for regulating and overseeing the energy and mining sectors within Cuba. As a national ministry, it operates under the Cuban central government in Havana.

Industry: Government Energy & Mining Regulation
Address: Havana, Cuba
Founded: 2012

Attack summary

Severity: high — The victim is a national government ministry responsible for critical energy and mining infrastructure. Data_published status indicates confirmed exfiltration of government data, which likely includes sensitive operational, regulatory, and administrative information pertaining to critical national infrastructure.

STORMOUS and GhostSec jointly claim an attack on the Cuban Ministry of Energy and Mines, with data reportedly published (disclosed status: data_published). The specific nature of data exfiltrated or encryption activity is not detailed in the available post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Government ministry data
Energy sector records
Mining sector records

What the group claims

Ministry of Energy and Mines. Ministry created on December 3, 2012 as an agreement of a meeting of the Council of Ministers of the Republic of Cuba.

Source

Indexed 19 days 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.