Disclosure context

About Interlock

Interlock is a recently emerged ransomware group that began operations in October 2024, primarily motivated by financial gain through extortion activities targeting organizations across multiple sectors. The group's country of origin and potential affiliations remain unclear given their recent emergence, with insufficient public documentation to determine whether they operate as an independent entity or under a Ransomware-as-a-Service model. Limited public information exists regarding their specific attack methodologies, initial access vectors, or encryption techniques, as major cybersecurity firms and law enforcement agencies have not yet published comprehensive technical analyses of their operations. Since beginning operations, Interlock has reportedly compromised approximately 100 victims, with their targeting primarily focused on organizations in English-speaking countries including the United States, Canada, United Kingdom, and Australia, as well as Italy, while demonstrating a preference for attacking education, manufacturing, healthcare, and public sector entities. The group remains active as of late 2024, though comprehensive threat intelligence profiles from established security research organizations have not yet been published due to the group's recent emergence in the threat landscape. The group has been linked to 109 public disclosures across our corpus. First observed on a leak site on October 13, 2024; most recent post May 11, 2026. The operation is currently active.

Timeline of this disclosure

October 27, 2025Maki Building Centers listed by Interlockon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Construction sector, which has 415 disclosures indexed across all operators we track. Geographically, Maki Building Centers is reported in United States, a country with 7,392 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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Maki Building Centers

Claimed by Interlock · listed 7 months ago

Age

since listed · data leaked

Status timeline

Listed
Oct 27, 2025
Data leaked

At a glance

Group: Interlock
Status: Data leaked
Country: United States
Sector: Construction
Listed on leak site: Oct 27, 2025

About the victim

AI dossier — public-source company profile

Maki Building Centers is a family-owned building materials retailer and manufacturer based in central Massachusetts, operating three store locations in Gardner, Lunenburg, and Sterling. Founded in 1949, the company serves DIY homeowners and contractors with lumber, hardware, windows, doors, roof trusses, and construction supplies. It also operates in-house manufacturing facilities and equipment rental services across its locations.

Industry: Building Materials Retail & Manufacturing
Address: 513 Betty Spring Road, Gardner, MA 01440
Employees: 51-200
Founded: 1949

Attack summary

Severity: high — The group claims confirmed exfiltration and public publication of employee and customer PII alongside business data, with full system compromise stated; however, no regulated medical or large-scale government data is indicated, keeping this at high rather than critical.

The Interlock ransomware group claims to have fully compromised and taken over Maki Building Centers' systems, exfiltrating company, employee, and customer data, which they state has been published publicly.

high

Data the group says was taken

AI dossier — extracted from the leak post

Company data
Employee data
Customer data
Financial records

What the group claims

Maki Building Centers is a company engaged in commerce and manufacturing with three branches in central Massachusetts. The company has warehouses, manufacturing facilities, large volumes, and financial resources! Security was very low, and the entire system was successfully compromised and taken over. Company, employee, and customer data ended up in our hands and, accordingly, in the public!

Sources

Victim sitemakicorp.com
Leak posthttp://u2q76zahlrpgvktr3i2j6o2emzcre67et2kvz43kj2gbrhokc2othqyd.onion/index.php?p=

Source

Indexed 7 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.