Disclosure context

About exitium

Exitium is an emerging ransomware group that was first observed in March 2026, operating with apparent financial motivations based on their limited but documented attack patterns. Given the recent emergence and limited public documentation, specific details about the group's country of origin, organizational structure, or potential affiliations remain unclear to security researchers and law enforcement agencies. The group's attack methodology and technical capabilities have not been extensively documented due to their recent appearance and small victim count, though they appear to target specific sectors rather than conducting widespread campaigns. Exitium has been observed targeting organizations in the United States and Brazil, with a particular focus on the agriculture and food production sector as well as public sector entities, suggesting possible strategic targeting of critical infrastructure. The group remains active as of their recent emergence, though their limited victim count of two documented cases indicates they are either highly selective in their targeting, newly operational, or operating at a smaller scale compared to established ransomware groups. The group has been linked to 8 public disclosures across our corpus. First observed on a leak site on March 17, 2026; most recent post May 16, 2026. The operation is currently active.

Timeline of this disclosure

May 15, 2026Ming Hwei Energy Co., Ltd. listed by exitiumon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing/Energy sector. Geographically, Ming Hwei Energy Co., Ltd. is reported in Taiwan, a country with 12 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

Ming Hwei Energy Co., Ltd.

Claimed by exitium · listed 6 days ago

Age

since listed · listed for ransom

Status timeline

Listed
May 15, 2026

Current state: Listed for ransom

At a glance

Group: exitium
Status: Listed for ransom
Country: Taiwan
Sector: Manufacturing/Energy
Listed on leak site: May 15, 2026

About the victim

AI dossier — public-source company profile

Ming Hwei Energy Co., Ltd. (mhe.com.tw) is a small private B2B manufacturer of solar cells based in Taiwan, with 11–50 employees and revenue under $5 million. The company operates as part of a Taiwanese fastener conglomerate and competes in a niche solar cell segment where Taiwanese producers face significant pricing pressure from Chinese manufacturers.

Industry: Solar Cell Manufacturing & Energy Components
Employees: 11-50

Attack summary

Severity: medium — Encryption of infrastructure is confirmed per the group's claim, but no data exfiltration is stated and no proof files or stolen data inventory are published for this specific victim, limiting severity to medium.

The exitium group claims to have encrypted Ming Hwei Energy's infrastructure; no data exfiltration volume or specific data types are explicitly stated in the post for this victim.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Encrypted infrastructure/systems

What the group claims

A small private B2B firm (11–50 staff, <$5M revenue), part of a Taiwanese fastener conglomerate. Manufacturer of solar cells in a niche where Taiwanese firms are consistently undercut by Chinese pricing. Their infrastructure was encrypted.

The leak post

captured from the group's site

Website: fannincad.org Zoominfo: https://www.zoominfo.com/c/fannin-central-appraisal-district/1117264519 Exfiltrated: 400 GB of data
Website: marborges.com Zoominfo: https://www.zoominfo.com/c/marborges-agroindustria/547271801 Company in Brasil with a bad security.
Website: mhe.com.tw Zoominfo: https://www.zoominfo.com/c/ming-hwei-energy-co-ltd/446006038 A small private B2B firm (11–50 staff, <$5M revenue), part of a Taiwanese fastener conglomerate. Manufacturer of solar cells in a niche where Taiwanese firms are consistently undercut by Chinese pricing. Their infra encrypted.
Website: gandhofcny.com Zoominfo: https://www.zoominfo.com/c/gastroenterology--hepatology-of-cny-pc/346091487 Data sample, whole internal data will be sold if they wouldn't pay ransom. Also Digestive Disease Center of CNY, LLC (ddcofcny.com) GI practice + AAAHC-accredited endoscopy center. Syracuse, New York, USA. Full database for sale — 167,303 patients, 124,761 SSN, 49,798 with sensitive diagnoses: - 167,303 patients — 124,761 with SSN, 166,402 (99%) with address, 164,296 (98%) with phone, 85,318 (51%) with email - 1,093,863 diagnoses (ICD-10), 1,547,142 medications, 186,246 pathology specimens with narrat…

Sources

Victim sitemhe.com.tw
Leak posthttp://m3ksukzn2glzfdvlusohril7n3iyk4z4fudf6mm22lwhpbpt5aiee5qd.onion

Source

Indexed 6 days 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.