Was General Formulations hit by ransomware?

General Formulations was listed by the Interlock ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Interlock ransomware group?

Interlock is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the General Formulations breach?

Interlock published data attributed to General Formulations. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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General Formulations

Claimed by Interlock · listed 1 year ago

15m

Age

since listed · data leaked

Status timeline

ListedMar 23, 2025
Data leakeddate unknown

At a glance

Group: Interlock
Status: Data leaked
Country: United States
Sector: Manufacturing
Listed on leak site: Mar 23, 2025

About the victim

AI dossier — public-source company profile

General Formulations is a family-owned manufacturer founded in 1953, headquartered in Sparta, Michigan. The company operates 400,000 square feet of manufacturing and converting space, specializing in solvent and water-based coating lines, and one of the largest converting operations in the industry (slitting, sheeting, punching, packaging). They also operate Spartan Graphics, which develops and prints point-of-purchase and marketing materials.

Industry: Pressure Sensitive Coatings & Converting
Address: Sparta, Michigan, United States
Founded: 1953

Attack summary

Severity: medium — Data has been published by the threat actor (disclosed status confirmed), indicating confirmed exfiltration. However, no specific sensitive data categories are mentioned, no proof files are enumerated in the available excerpt, and no ransom demand is stated. The company handles manufacturing/converting operations and marketing materials rather than regulated sectors like finance or healthcare.

The Interlock group claims to have breached General Formulations and exfiltrated data. No specific details on encryption status, data types compromised, or ransom demand are provided in the available excerpt.

medium

Data the group says was taken

AI dossier — extracted from the leak post

business records
operational data
customer information

What the group claims

Founded in 1953, General Formulations is a family owned company located in Sparta, Michigan. We have several solvent and water based coating lines as well as one of the largest converting operations in the industry, specializing in slitting, sheeting, punching and packaging. Our corporate headquarters has 400,000 square feet of manufacturing and converting space to service the ever growing needs of our customers.Spartan Graphics specializes in developing and printing point of purchase and marketing materials.

Sources

Source

Indexed 1 year 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.

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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 114 public disclosures across our corpus. First observed on a leak site on October 13, 2024; most recent post July 10, 2026. The operation is currently active.

Timeline of this disclosure

March 23, 2025General Formulations listed by Interlockon the group's public leak site

Other recent disclosures by Interlock

Interlock has been linked to 114 public victims on Darkfield. A sample of the most recent:

See the full Interlock dossier →

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 3,681 disclosures indexed across all operators we track. Geographically, General Formulations is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Interlock means General Formulations appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on Interlock's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.