Disclosure context

About chaos

Based on the limited publicly available information, Chaos is a recently emerged ransomware group that was first observed in March 2025, appearing to be financially motivated given their ransom demands and targeting patterns. The group's origin and specific affiliations remain unclear due to their recent emergence, though their operational model and whether they operate as Ransomware-as-a-Service or as an independent entity has not been definitively established by security researchers. Their attack methodology and specific technical capabilities are not yet well-documented in public threat intelligence reports, though their targeting suggests they employ common initial access vectors to compromise victims across multiple sectors. Chaos has claimed 41 victims primarily concentrated in the United States, Germany, Poland, Malaysia, and Sweden, with a particular focus on technology companies, financial services, business services, and manufacturing sectors, though the scope and impact of their most significant attacks have not been widely publicized. The group currently appears to be active based on recent victim claims, though comprehensive analysis from major security firms regarding their long-term operational capabilities and potential law enforcement actions remains limited due to their recent emergence in the threat landscape. The group has been linked to 53 public disclosures across our corpus. First observed on a leak site on March 31, 2025; most recent post May 17, 2026. The operation is currently active.

Timeline of this disclosure

December 24, 2025amsino.com listed by chaoson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 1,779 disclosures indexed across all operators we track. Geographically, amsino.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

AmSino International Inc.

listed as amsino.com · Claimed by chaos · listed 5 months ago

Age

since listed · data leaked

Status timeline

Listed
Dec 24, 2025
Data leaked

At a glance

Group: chaos
Status: Data leaked
Country: United States
Sector: Healthcare
Listed on leak site: Dec 24, 2025

About the victim

AI dossier — public-source company profile

AmSino International Inc. is a US-based medical device and healthcare supply company with over 25 years of experience serving healthcare professionals worldwide. The company focuses on manufacturing and distributing superior quality medical products aimed at improving patient care. It operates in the healthcare sector and has built a reputation for technological advancement and meeting industry standards.

Industry: Medical Devices & Healthcare Supplies
Employees: 51-200

Attack summary

Severity: high — Data has been confirmed as published (data_published status) by the Chaos group against a healthcare-sector company, indicating confirmed exfiltration of potentially sensitive business and possibly patient-adjacent data. The healthcare context elevates severity even without explicit PII confirmation.

The Chaos ransomware group claims to have compromised AmSino International Inc. and published stolen data. The disclosed status indicates data has been published, though specific details on encryption or volume of exfiltrated data were not provided in the post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Internal business documents
Corporate communications
Potentially proprietary product or R&D data
Possibly customer/partner records

What the group claims

Amsinos superior quality and technological advancements have gained the trust of healthcare professionals worldwide. With over 25 years of experience, we are fully aware of what it takes to meet and exceed industry expectations. Our commitment to improving patient care is not only reflected in our p…

Sources

Source

Indexed 5 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.