Ransomware group profile · #33 by claimed victims

Fog ransomware

Fog, which uses the .flocked extension for encrypted files, was first observed in May in campaigns by Storm-0844, a threat actor known for distributing Akira. By June, Storm-0844 was deploying Fog more than Akira.

Active First seen Jul 2024

189Victims claimed on leak sites

0Victims in the last 30 days

0Victims in the last 90 days

35Countries hit

5Leak-site URLs tracked, 0 online

20 Mar 2025Latest claim recorded

Victimology

Who Fog claims to have breached, from 189 leak-site posts recorded by VULONE.

Claims per month last 12 months

Top sectors

Technology58

Education39

Professional Services27

Manufacturing22

Transportation10

Healthcare8

Agriculture and Food Production6

Retail & E-Commerce5

Top countries

United States76

Germany15

France7

Brazil6

Australia6

Belgium5

Italy5

Indonesia4

Latest claimed victims 12 most recent

Victim	Sector	Country	Claimed
Newtown Friends School (newtownfriends.org) newtownfriends.org	Education	US	20 Mar 2025
RAE (Real Academia Española) (rae.es) rae.es	Education	ES	17 Mar 2025
University Diagnostic Medical Imaging, PC (udmi.net) udmi.net	Healthcare	US	13 Mar 2025
El Camino Real Academy (elcaminorealacademy) elcaminorealacademy.com	Education	US	13 Mar 2025
Wilkinson Rogers (wilkinsonrogers.com) wilkinsonrogers.com	Professional Services	—	11 Mar 2025
Magnolia Manor (magnoliamanor.com) magnoliamanor.com	Healthcare	US	10 Mar 2025
WJCC Public Schools (wjccschools.org) wjccschools.org	Education	US	6 Mar 2025
Oberlin Cable Co-op (oberlin.net) oberlin.net	Technology	US	6 Mar 2025
1X Internet 1xinternet.de	Technology	DE	6 Mar 2025
Bizcode bizcode.it	Technology	IT	6 Mar 2025
Manning Publications Co. manning.com	Technology	US	6 Mar 2025
Engikam engicam.com	Technology	IT	6 Mar 2025

All 189 Fog 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 Fog 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 Fog ransomware still active?

Fog is tracked as active. The most recent leak-site claim VULONE recorded is dated 20 March 2025.

How many victims has Fog claimed?

VULONE has recorded 189 leak-site victim claims attributed to Fog since July 2024, across 35 countries and 13 sectors.

Which industries does Fog target?

The sectors most often named on the Fog leak site are Technology, Education, Professional Services.

Which countries are most affected by Fog?

Most Fog victims recorded by VULONE are located in United States, Germany, France.

Where does VULONE get Fog 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].