Disclosure context

About Rancoz

Rancoz is a relatively obscure ransomware group that emerged in May 2023, operating with apparent financial motivations and maintaining a low profile compared to major ransomware families. The group's origin and affiliations remain largely undetermined due to limited public documentation from major cybersecurity agencies and research organizations, with no confirmed information regarding their country of origin or whether they operate as a Ransomware-as-a-Service model. Based on available targeting data, Rancoz appears to focus primarily on manufacturing sector organizations within the United States, though their specific attack methodology, initial access vectors, and technical capabilities have not been extensively documented in public threat intelligence reports from established sources such as CISA, FBI, or major cybersecurity firms. With only six known victims documented since their emergence, the group has not conducted any widely-publicized major campaigns or attracted significant law enforcement attention that has been made public. Current intelligence suggests the group remains active as of recent observations, though their limited victim count and low public profile indicate they operate as a relatively minor threat actor within the broader ransomware ecosystem. The group has been linked to 6 public disclosures across our corpus. First observed on a leak site on May 5, 2023; most recent post September 3, 2023. The operation is currently inactive.

Timeline of this disclosure

July 7, 2023Industrial Heat Transfer (iht-inc.com) listed by Rancozon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, Industrial Heat Transfer (iht-inc.com) 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

← All victims

Industrial Heat Transfer, Inc.

listed as Industrial Heat Transfer (iht-inc.com) · Claimed by Rancoz · listed 3 years ago

34m

Age

since listed · data leaked

Status timeline

Listed
Jul 7, 2023
Data leaked

At a glance

Group: Rancoz
Status: Data leaked
Country: United States
Sector: Manufacturing
Listed on leak site: Jul 7, 2023

About the victim

AI dossier — public-source company profile

Industrial Heat Transfer, Inc. (IHT) is a Wisconsin-based manufacturer specializing in custom commercial and industrial continuous-fin heat exchangers. The company serves a broad range of markets including gas turbine, military (CAGE CODE 0ASU6), compressor, motor/generator, and waste heat recovery applications from a 13,000-square-foot facility. IHT is certified to ASME Section VIII Div. I and multiple military specifications (MIL-STD-248, MIL-C-19836).

Industry: Custom Industrial Heat Exchanger Manufacturing
Address: Wisconsin, United States (exact street address not publicly stated; 13,000-sq-ft facility in Wisconsin)

Attack summary

Severity: high — Data has been published (disclosed status: data_published), and the victim manufactures equipment to military specifications with an active DoD CAGE code, meaning exfiltrated data could include sensitive defense-related engineering and contractual information. This elevates severity beyond medium even absent explicit data volume details.

The Rancoz ransomware group claims to have attacked Industrial Heat Transfer, Inc. and lists the disclosure status as data_published, indicating that stolen data has been released. No specific details on ransom amount, data volume, or precise data categories were included in the leak post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Company business data
Potentially proprietary engineering/design files
Customer records
Internal operational documents

What the group claims

Custom Heat Exchanger Manufacturer

Sources

Victim siteiht-inc.com
Leak posthttp://ze677xuzard4lx4iul2yzf5ks4gqqzoulgj5u4n5n4bbbsxjbfr7eayd.onion/post/4.html

Source

Indexed 3 years 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.