Ransomware group profile · #80 by claimed victims

Cicada3301 ransomware

Cicada3301 is a ransomware-as-a-service group (tracked as Repellent Scorpius by Palo Alto) that emerged in mid-2024 using Rust-based ransomware targeting Windows, Linux, and ESXi systems, suspected to be a successor of BlackCat/ALPHV and running an affiliate program with 20% commissions.

Active First seen Jun 2024

75Victims claimed on leak sites

0Victims in the last 30 days

0Victims in the last 90 days

15Countries hit

16Leak-site URLs tracked, 0 online

4 Sep 2025Latest claim recorded

Victimology

Who Cicada3301 claims to have breached, from 75 leak-site posts recorded by VULONE.

Claims per month last 12 months

Top sectors

Professional Services30

Technology10

Manufacturing10

Hospitality5

Retail & E-Commerce4

Transportation4

Healthcare4

Financial Services3

Top countries

United States42

United Kingdom6

Canada4

Brazil3

France3

Japan3

Spain3

Singapore3

Latest claimed victims 12 most recent

Victim	Sector	Country	Claimed
CI Engineering cieng.com	Professional Services	US	4 Sep 2025
diasdeprimavera.com.br diasdeprimavera.com.br	Retail & E-Commerce	BR	18 Jul 2025
gatlogistica.com.br gatlogistica.com.br	Transportation	BR	18 Jul 2025
B&M - Expertise - Audit bmexpertise.fr	Professional Services	FR	18 Jul 2025
Burnham Nationwide burnhamnationwide.com	Professional Services	US	18 Jul 2025
Sensical sensical.com	Technology	US	18 Jul 2025
Сonasa ri.conasa.com	Manufacturing	ES	15 Jul 2025
PACIFIC BIOLABS pacificbiolabs.com	Healthcare	US	11 Jul 2025
Mack Energy Corp mec.com	Energy & Utilities	US	9 Jul 2025
Asesoría Bieito bieito.com	Professional Services	ES	22 Apr 2025
Natilait natilait.com.tn	Agriculture and Food Production	TN	22 Apr 2025
Amazon Transportes amazontransportes.com.br	Transportation	BR	22 Apr 2025

All 75 Cicada3301 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.

Start free Sign in

Tactics, techniques and procedures

ATT&CK technique mapping for Cicada3301 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 Cicada3301 ransomware still active?

Cicada3301 is tracked as active. The most recent leak-site claim VULONE recorded is dated 4 September 2025.

How many victims has Cicada3301 claimed?

VULONE has recorded 75 leak-site victim claims attributed to Cicada3301 since June 2024, across 15 countries and 12 sectors.

Which industries does Cicada3301 target?

The sectors most often named on the Cicada3301 leak site are Professional Services, Technology, Manufacturing.

Which countries are most affected by Cicada3301?

Most Cicada3301 victims recorded by VULONE are located in United States, United Kingdom, Canada.

Where does VULONE get Cicada3301 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].