Disclosure context

About anubis

Anubis is a recently emerged ransomware group that began operations in February 2025, primarily motivated by financial gain through encryption and extortion attacks. The group has demonstrated rapid expansion, accumulating 65 documented victims within a short operational timeframe. Given the group's recent emergence, limited information is publicly available regarding their specific country of origin, organizational structure, or confirmed affiliations with other cybercriminal entities, though their operational patterns suggest they may operate as an independent group or small-scale ransomware-as-a-service operation. Their attack methodology appears to focus on opportunistic targeting across multiple geographic regions, with victims concentrated primarily in the United States, Australia, Canada, the United Kingdom, and France, indicating either English-language proficiency or the use of automated tools that facilitate cross-border operations. The group demonstrates a clear preference for targeting healthcare organizations and manufacturing companies, followed by business services and technology sectors, suggesting they prioritize organizations with critical operational dependencies that may be more likely to pay ransoms quickly. Due to the group's recent emergence in early 2025, there is insufficient publicly documented information from established cybersecurity firms or law enforcement agencies regarding their specific technical capabilities, encryption methods, or whether they employ double or triple extortion tactics involving data theft and leak sites. As of current reporting, Anubis remains an active threat with continued victim acquisition, though the full scope of their capabilities and long-term operational sustainability remains to be determined as security researchers continue to analyze their activities. The group has been linked to 77 public disclosures across our corpus. First observed on a leak site on February 25, 2025; most recent post May 13, 2026. The operation is currently active.

Timeline of this disclosure

May 1, 2026Colorado Dental Wellness Center listed by anubison 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, Colorado Dental Wellness Center is reported in US, a country with 2,713 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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Colorado Dental Wellness Center

Claimed by anubis · listed 20 days ago

20d

Age

since listed · data leaked

Status timeline

Listed
May 1, 2026
Data leaked

At a glance

Group: anubis
Status: Data leaked
Country: US
Sector: Healthcare
Listed on leak site: May 1, 2026

What the group claims

Clients’ medical data breach.

The leak post

captured from the group's site

Anubis blog ANUBIS NEWS FAQ ABOUT RULES English English Español Русский 中文 Deutsch Download Colorado Dental Wellness Center The man in the photo is Ahmed Waddah, and he is one of the victims of the data breach at Colorado Dental Wellness Center — the case we are looking into today. This time, we will focus specifically on the part of the leak that affects clients, as there is a significant amount of such data. Let’s start with what you have already seen in Ahmed’s case. All clients of the clinic are required to fill out a form containing a substantial amount of personal information — including their name, date of birth, SSN, and address. In many cases, this is accompanied by a photo of the client. Taken together, this effectively provides a ready-made dataset that could be used for identity theft and various types of fraud. Contact details are, of course, also present, which creates multiple potential vectors for abuse. In addition to the information provided in registration forms, the dataset also includes numerous identity documents, such as driver’s licenses, which significantly increases the severity of the situation. Finally, as this is a medical clinic, the dataset contains n…

Sources

Leak posthttp://om6q4a6cyipxvt7ioudxt24cw4oqu4yodmqzl25mqd2hgllymrgu4aqd.onion/r/gZGDkk6Zx8s8JxjAWQV1QgHpfbA3eQbyiWobUEwODwbU6GveFY+Iqy2ZMPbggLttuH3GLXQ9bXSnn8nlCfXNlbjhab2RT

Source

Indexed 20 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.