Disclosure context

About lamashtu

Based on the limited available information, Lamashtu is an emerging ransomware group that was first observed in April 2026, appearing to be financially motivated based on their operational patterns. The group's origin and potential affiliations remain unclear due to their recent emergence and limited public documentation by major threat intelligence organizations. Lamashtu's attack methodology and specific technical capabilities have not been extensively documented by established security researchers, though their targeting patterns suggest they employ standard ransomware deployment techniques across multiple industry verticals. The group has conducted at least 8 confirmed attacks, demonstrating a geographically diverse targeting approach with victims identified in France, Italy, the United States, Singapore, and Malaysia, while focusing primarily on business services, manufacturing, transportation and logistics, hospitality and tourism, and energy sectors. Given the group's recent first observation in April 2026 and limited public threat intelligence reporting from established sources like CISA, FBI, or major security firms, Lamashtu appears to represent a newly active threat actor whose current operational status and long-term capabilities require further monitoring and analysis. The group has been linked to 30 public disclosures across our corpus. First observed on a leak site on April 13, 2026; most recent post May 19, 2026. The operation is currently active.

Timeline of this disclosure

April 13, 2026FILAIR listed by lamashtuon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Transportation/Logistics sector, which has 847 disclosures indexed across all operators we track. Geographically, FILAIR is reported in FR, a country with 238 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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FILAIR

Claimed by lamashtu · listed 1 month ago

37d

Age

since listed · data leaked

Status timeline

Listed
Apr 13, 2026
Data leaked

At a glance

Group: lamashtu
Status: Data leaked
Country: FR
Sector: Transportation/Logistics
Listed on leak site: Apr 13, 2026

About the victim

AI dossier — public-source company profile

Filair is a French company founded in 1953 that designs, manufactures, and refurbishes wire equipment and mechanically welded assemblies in stainless steel (304L and 316L) and epoxy-coated raw steel. The company serves sectors including agri-food, aeraulics, mechanical industry, and pharmaceutical laboratories with products such as autoclave baskets, sterilisation racks, and custom protective grilles. Filair holds ISO 9001:2015 certification since 2019.

Industry: Industrial Wire & Stainless Steel Equipment Manufacturing
Founded: 1953

Attack summary

Severity: medium — Data has been published by the threat actor, indicating confirmed exfiltration, but no specific sensitive regulated data (PII at scale, medical, financial) is evidenced in the post, and the company is a small/mid-sized industrial manufacturer with no stated critical infrastructure role.

The Lamashtu ransomware group claims to have attacked Filair and has published data (disclosed status: data_published), though the leak post does not specify whether encryption occurred or detail what categories of data were exfiltrated.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Company operational data
Potentially client/order records
Potentially internal business documents

What the group claims

Since 1953, Filair, a French company, has been designing, manufacturing and retrofitting wire equipment and mechanically welded assemblies.

Sources

Victim sitefilair.fr
Leak posthttp://lamashtux5j74mcm7lwwgn5yrvuwtrpxjoyendif3v3hrztjesfoyayd.onion/post/4af9050a6c429cabdf7aec064397ed34

Source

Indexed 1 month 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.