Was diasdeprimavera.com.br hit by ransomware?

diasdeprimavera.com.br was listed by the Cicada3301 ransomware operation (Brazil), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Cicada3301 ransomware group?

Cicada3301 is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the diasdeprimavera.com.br breach?

Cicada3301 published data attributed to diasdeprimavera.com.br (~106 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

Cartório Dias de Primavera

listed as diasdeprimavera.com.br · Claimed by Cicada3301 · listed 1 year ago

106 GB

Data size

12m

Age

since listed · data leaked

Status timeline

ListedJul 18, 2025
Data leakeddate unknown

At a glance

Group: Cicada3301
Status: Data leaked
Country: Brazil
Listed on leak site: Jul 18, 2025
Data size: 106 GB

About the victim

AI dossier — public-source company profile

Cartório Dias de Primavera is a Brazilian notarial and civil registry office (cartório) operated by notary Velenice Dias in Primavera do Leste, Mato Grosso. It provides notarial services including civil registry, property registration, deed authentication, and protest services to individuals and legal entities.

Industry: Legal Services & Notarial Registry
Address: Av. Cascavel, n. 1079, Jardim das Américas, Primavera do Leste - MT, CEP 78.850-000, Brazil

Attack summary

Severity: critical — A notarial registry office maintains sensitive government-linked civil, corporate, and property records containing PII and legal documents at scale. Exfiltration of 106 GB likely includes personal identity data, registry information, and legal records of significant regulatory and personal sensitivity.

Cicada3301 claims to have exfiltrated 106 GB of data from the cartório. The group has published the victim listing but the post provides no details on specific data categories or proof materials beyond the stated data volume.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Civil registry records (pessoas naturais)
Corporate registry records (pessoas jurídicas)
Notarial deeds and documents
Authentication and signature records
Protest documentation
Personal identity information (CIN/RG)
Administrative and HR records

What the group claims

Status: 13d 7h 43m 32s - Size Data: 106 GB

Sources

Source

Indexed 1 year 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.

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Disclosure context

About Cicada3301

Cicada3301 is a recently emerged ransomware group that began operations in June 2024, primarily motivated by financial gain through extortion activities targeting organizations across multiple sectors. The group's origin and affiliations remain largely undocumented in public threat intelligence reporting, with limited information available regarding their operational structure or potential connections to other cybercriminal organizations. Based on observed targeting patterns, Cicada3301 has demonstrated a preference for attacking business services, technology, manufacturing, and financial sector organizations, with their operations concentrated primarily in English-speaking countries including the United States, United Kingdom, and Canada, as well as extending to Spain and Singapore. The group has successfully compromised approximately 75 known victims since their emergence, though specific details regarding their attack methodologies, initial access vectors, encryption techniques, and extortion tactics have not been extensively documented in publicly available threat intelligence reports from major cybersecurity firms or government agencies. Given the limited public documentation available from CISA, FBI, Mandiant, or other reputable security researchers, the group's current operational status, technical capabilities, and specific attack infrastructure remain largely uncharacterized in open-source intelligence reporting. As of the most recent observations, Cicada3301 appears to remain active in conducting ransomware operations, though comprehensive analysis of their tactics, techniques, and procedures awaits more detailed public reporting from established threat intelligence sources. The group has been linked to 75 public disclosures across our corpus. First observed on a leak site on June 20, 2024; most recent post September 4, 2025. The operation is currently inactive.

Timeline of this disclosure

July 18, 2025diasdeprimavera.com.br listed by Cicada3301on the group's public leak site

Data size: 106 GB

Other recent disclosures by Cicada3301

Cicada3301 has been linked to 75 public victims on Darkfield. A sample of the most recent:

See the full Cicada3301 dossier →

Sector and geography

Geographically, diasdeprimavera.com.br is reported in Brazil, a country with 404 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Cicada3301 means diasdeprimavera.com.br appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CERT.br (Brazil), as required for your jurisdiction.
Monitor for the data appearing on Cicada3301's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.