Ransomware group profile · #249 by claimed victims

Ms13089 ransomwarealso ms13-089

MS13089 is a newly emerged ransomware group (first observed December 2025) that named itself after a 2013 Microsoft Security Bulletin, claiming a handful of victims including a law firm, operating primarily as a double-extortion actor.

Active First seen Dec 2025

5Victims claimed on leak sites

0Victims in the last 30 days

1Victims in the last 90 days

5Countries hit

0Leak-site URLs tracked

15 Aug 2026Latest claim recorded

Victimology

Who Ms13089 claims to have breached, from 5 leak-site posts recorded by VULONE.

Claims per month last 12 months

Top sectors

Professional Services2

Other1

Healthcare1

Retail & E-Commerce1

Top countries

Italy1

Chile1

Luxembourg1

Germany1

United States1

Latest claimed victims 5 most recent

Victim	Sector	Country	Claimed
servmarmg.cl servmarmg.cl	Other	CL	15 Aug 2026
brittanyresidential.com brittanyresidential.com	Retail & E-Commerce	US	5 May 2026
sjl-legal.com sjl-legal.com	Professional Services	LU	15 Jan 2026
dgpcommercialisti.it dgpcommercialisti.it	Professional Services	IT	18 Dec 2025
uro.com uro.com	Healthcare	DE	18 Dec 2025

All 5 Ms13089 victims, searchable

Full victim list with claim posts, domains, timing and exports, plus the negotiation chats and leak-site screenshots VULONE archives for this crew.

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Tactics, techniques and procedures

ATT&CK technique mapping for Ms13089 is in progress. Victimology, infrastructure status and leak-site tracking are live above.

Indicators, detections and the full playbook

Hashes, C2 addresses, onion services, Sigma and YARA detections per technique, and the negotiation transcripts are available to signed-in analysts.

See full IOCs

Frequently asked

Is Ms13089 ransomware still active?

Ms13089 is tracked as active. The most recent leak-site claim VULONE recorded is dated 15 August 2026.

How many victims has Ms13089 claimed?

VULONE has recorded 5 leak-site victim claims attributed to Ms13089 since December 2025, across 5 countries and 4 sectors.

Which industries does Ms13089 target?

The sectors most often named on the Ms13089 leak site are Professional Services, Other, Healthcare.

Which countries are most affected by Ms13089?

Most Ms13089 victims recorded by VULONE are located in Italy, Chile, Luxembourg.

Where does VULONE get Ms13089 victim data?

Claims are collected continuously from the group's own leak sites and cross-checked with ransomware.live and RansomLook. A claim is the group's assertion, not a confirmed breach.

Other ransomware groups

Victim claims are collected from leak sites and enrichment partners (ransomware.live, RansomLook) and represent the group's own assertions, not confirmed breaches. Profile last updated 16 September 2026. Questions or corrections: [email protected].