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

March 29, 2026Fanasa listed by Stormouson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 2,524 disclosures indexed across all operators we track. Geographically, Fanasa is reported in Mexico, a country with 92 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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Fanasa

Claimed by Stormous · listed 2 months ago

52d

Age

since listed · data leaked

Status timeline

Listed
Mar 29, 2026
Data leaked

At a glance

Group: Stormous
Status: Data leaked
Country: Mexico
Sector: Technology
Listed on leak site: Mar 29, 2026

About the victim

AI dossier — public-source company profile

Fanasa (fanasa.com) is a Mexican company operating in the trade or distribution sector, based in Mexico. Beyond the domain and country of origin, limited public information is available from the leak post or public site to further characterize its scale or specific operations.

Industry: Wholesale Distribution / Trade (Mexico)

Attack summary

Severity: critical — Confirmed exfiltration of regulated PII at scale including taxpayer IDs (RFC), financial records, CFDI fiscal documents, and internal corporate data in Mexico — constituting regulated sensitive data under Mexican data protection law (LFPDPPP). Full system access claimed with data actively offered for sale.

Stormous claims to have exfiltrated approximately half of Fanasa's data, including PII, electronic fiscal documents (CFDI/XML), financial transaction records, commercial invoices, taxpayer identification numbers (RFC), client and vendor databases, internal corporate documentation, administrative/system files, engineering drawings, and email/application data. The group states all extracted data is offered for sale and claims full access to the company's systems was obtained.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Personally Identifiable Information (PII)
Electronic Fiscal Documents (CFDI/XML)
Financial Transaction Records
Commercial Invoices & Billing Data
Taxpayer Identification Numbers (RFC)
Client & Vendor Database
Internal Corporate Documentation
Administrative/System Files
Engineering Drawings & Schematics
Project Planning & Execution Documents
Email/Communication Data
Application/Database Data (AYEAPLICACIONES, BDATOSFITCLOD)
Software/Installation Files (AUTOBOU)
Personal/Miscellaneous Files

What the group claims

Personally Identifiable Information (PII), Electronic Fiscal Documents (CFDI/XML), Financial Transaction Records, Commercial Invoices & Billing Data, Taxpayer Identification Numbers (RFC), Client & Vendor Database, Internal Corporate Documentation, Administrative/System Files, operational records, engineering drawings, schematics, Project Planning & Execution Documents, Email/Communication/System/Application Data, database, Log Data, Software/Installation/Program Files

The leak post

captured from the group's site

Initial Access Brokers - Long-Term Collaboration
We are currently seeking reliable Initial Access Brokers for long-term collaboration.
** Please do not waste time attempting complex exploit development or direct EDR confrontation. We are interested exclusively in stable corporate access.
Local user access is acceptable.
  * Small to mid-sized enterprises: fixed payment starting at 
  * Large enterprises: revenue share from final settlement


FANASA.COM Half the data has been extracted
Personally Identifiable Information (PII), Electronic Fiscal Documents (CFDI/XML), Financial Transaction Records, Commercial Invoices & Billing Data, Taxpayer Identification Numbers (RFC), Client & Vendor Database/Internal Corporate Documentation
Administrative/System Files/ADMIN, DOAS, operational records, engineering drawings, schematics...
Project Planning & Execution Documents...
(Folders/Files) Email/Communication/System/Application Data AYEAPLICACIONES database/Log Data BDATOSFITCLOD, Software/Installation/Program Files AUTOBOU, Personal/Miscellaneous Files AvenaCubana
All of this data is offered for sale (user information: email, phone number, full name, date of birth / payment and bookin…

Data the group says was taken

PII
financial
emails
contracts

Sources

Victim sitefanasa.com
Leak posthttp://pdcizqzjitsgfcgqeyhuee5u6uki6zy5slzioinlhx6xjnsw25irdgqd.onion

Source

Indexed 2 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.

Disclosure context

About Stormous

Timeline of this disclosure

Other recent disclosures by Stormous

Sector and geography

Status timeline

At a glance

About the victim

Attack summary

Data the group says was taken

What the group claims

The leak post

Data the group says was taken

Sources

Source