Disclosure context

About MS13-089

MS13-089 is a ransomware group first observed in May 2026 with an apparent financial motivation, though its limited documented activity makes comprehensive attribution difficult at this time. Based on available data, the group has claimed or been linked to a single known victim, with targeting focused on the United States and specifically the Healthcare and Social Services sector, a pattern consistent with threat actors who deliberately select high-pressure targets likely to pay ransoms quickly to restore critical operations. No public reporting from CISA, the FBI, Mandiant, or other established threat intelligence sources has yet documented the group's specific initial access vectors, tooling, encryption methods, or affiliation with known ransomware ecosystems, and it remains unclear whether MS13-089 operates as a Ransomware-as-a-Service platform or as an independent closed group. Given its extremely recent emergence and minimal victim footprint at the time of this writing, MS13-089 should be considered an emerging and under-documented threat, and the Healthcare sector in particular should monitor for indicators of compromise as the group's tactics, techniques, and procedures become more clearly defined through ongoing incident investigations and threat intelligence collection. Current status remains active based on first observation date, though the full scope of its operations has yet to be established in open-source reporting. The group has been linked to 2 public disclosures across our corpus. First observed on a leak site on May 14, 2026; most recent post May 15, 2026. The operation is currently active.

Timeline of this disclosure

May 14, 2026Brittany Residential, Inc. listed by MS13-089on the group's public leak site

Other recent disclosures by MS13-089

MS13-089 has been linked to 2 public victims on Darkfield. A sample of the most recent:

Virginia UrologyHealthcare · US · May 15, 2026

See the full MS13-089 dossier →

Sector and geography

This disclosure adds to ransomware activity in the Healthcare/Social Services sector. Geographically, Brittany Residential, Inc. 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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Brittany Residential, Inc.

Claimed by MS13-089 · listed 7 days ago

Age

since listed · listed for ransom

Status timeline

Listed
May 14, 2026

Current state: Listed for ransom

At a glance

Group: MS13-089
Status: Listed for ransom
Country: US
Sector: Healthcare/Social Services
Listed on leak site: May 14, 2026

About the victim

AI dossier — public-source company profile

Brittany Residential, Inc. is a US-based organization providing residential care and support services for individuals with developmental disabilities. The organization describes its mission as person-centered and compassionate, focused on empowering individuals to live fulfilling lives. No specific location or scale data is available from the leak post or a public site.

Industry: Residential Care & Support Services for Developmental Disabilities

Attack summary

Severity: medium — The victim operates in the healthcare/social services sector handling data related to individuals with developmental disabilities, which likely includes sensitive personal and health-related information. However, no confirmed exfiltration or proof has been published, warranting medium rather than high or critical severity.

The MS13-089 ransomware group has listed Brittany Residential, Inc. as a victim. No specific claims of encryption or exfiltration volume are stated, and no proof files or ransom demand have been disclosed at this stage.

medium

What the group claims

Organization providing support and care for individuals with developmental disabilities, focused on person-centered care.

The leak post

captured from the group's site

At Brittany Residential, Inc., we believe in creating a world where individuals with developmental disabilities are supported, valued, and empowered to live fulfilling lives. Our dedicated team provides compassionate, person-centered care that...
Virginia Urology (VU) has a long history of providing quality care to the Greater Richmond metro area since 1929. This practice prides itself on its strong commitment to the community’s urological needs by recruiting highly... 
Aree di specializzazione: contabilità, bilanci, dichiarazioni fiscali, incarichi di sindaco e revisore legale, consulente tecnico d’ufficio, ristrutturazioni e operazioni straordinarie. Consulenza Societaria, ordinaria e straordinaria, ivi...

Screenshot of the leak post

Leak screenshot for Brittany Residential, Inc.

Sources

Leak posthttp://msleakjir7pxbe6onlqe5uwgvdmy6nq4mnwfy7ojswbhnleenm77vgad.onion

Source

Indexed 7 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.