Ransomware group profile · #89 by claimed victims

Flocker ransomware

Flocker (also linked to the FSociety brand) is a ransomware-as-a-service group active since 2023–2024, targeting Windows and Linux systems via phishing, compromised RDP, and exploit kits using a double extortion model, and observed collaborating with FunkSec.

Active First seen May 2024

59Victims claimed on leak sites

0Victims in the last 30 days

0Victims in the last 90 days

16Countries hit

0Leak-site URLs tracked

31 Jul 2025Latest claim recorded

Victimology

Who Flocker claims to have breached, from 59 leak-site posts recorded by VULONE.

Claims per month last 12 months

Top sectors

Technology14

Professional Services9

Financial Services7

Education7

Government & Defense6

Transportation3

Retail & E-Commerce2

Healthcare1

Top countries

United States6

United Arab Emirates3

Taiwan3

Canada2

Zambia2

Thailand1

Cayman Islands1

Czechia1

Latest claimed victims 12 most recent

Victim	Sector	Country	Claimed
Ieee-apscon.org ieee-apscon.org	Technology	US	31 Jul 2025
T*********p.com t*********p.com	Financial Services	—	31 Jul 2025
G***n.com g***n.com	Financial Services	—	31 Jul 2025
H*u.iv.tw h*u.iv.tw	Education	TW	31 Jul 2025
G*******************y.org g*******************y.org	Government & Defense	—	15 Jul 2025
Idgcayman.com idgcayman.com	Professional Services	KY	7 Jul 2025
S****h.com s****h.com	Professional Services	—	5 Jul 2025
I*****n.com i*****n.com	Retail & E-Commerce	—	30 Jun 2025
Ajmanre.gov.ae ajmanre.gov.ae	Government & Defense	AE	12 Jun 2025
A***e.gov.ae a***e.gov.ae	Government & Defense	—	5 Jun 2025
Lts.com.vn lts.com.vn	Technology	VN	5 Jun 2025
Dcsdev.org dcsdev.org	Technology	US	1 Jun 2025

All 59 Flocker 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 Flocker 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 Flocker ransomware still active?

Flocker is tracked as active. The most recent leak-site claim VULONE recorded is dated 31 July 2025.

How many victims has Flocker claimed?

VULONE has recorded 59 leak-site victim claims attributed to Flocker since May 2024, across 16 countries and 10 sectors.

Which industries does Flocker target?

The sectors most often named on the Flocker leak site are Technology, Professional Services, Financial Services.

Which countries are most affected by Flocker?

Most Flocker victims recorded by VULONE are located in United States, United Arab Emirates, Taiwan.

Where does VULONE get Flocker 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].