Was Oportunidados hit by ransomware?

Oportunidados was listed by the direwolf 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 direwolf ransomware group?

direwolf 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 Oportunidados breach?

direwolf published data attributed to Oportunidados. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Oportunidados

Claimed by Direwolf · listed 3 days ago

Age

since listed · data leaked

Status timeline

ListedSep 1, 2026
Data leakeddate unknown

At a glance

Group: Direwolf
Status: Data leaked
Country: Brazil
Listed on leak site: Sep 1, 2026

About the victim

AI dossier — public-source company profile

Oportunidados is a Brazilian B2B business intelligence and market prospecting platform offering lead generation, company data, real estate analytics, and credit risk analysis services. The company provides SaaS solutions including SDR lead prospecting, construction/real estate opportunity tracking, pricing intelligence, trademark monitoring, and data APIs to support sales, legal, accounting, and marketing professionals.

Industry: Business Intelligence & Data Services

Attack summary

Severity: critical — Confirmed exfiltration of massive scale PII dataset (28M+ Brazilian individuals linked to corporate identities via CNPJ), user authentication credentials with plaintext password hashes, financial transaction and payment data, and API/OAuth tokens. Exposure of this corporate and personal data registry at national scale poses severe regulatory, fraud, and identity theft risks under LGPD.

The direwolf group claims to have exfiltrated Oportunidados's complete production database, including 28.1 million shareholder/partner records linked to Brazilian CNPJs, 4.1 million extended company profiles, 6,040 user accounts with 227,768 password hashes, OAuth tokens, API tokens, and session data. Additionally, financial transaction records, checkout processes with payment data, order information, and internal operational metrics have been disclosed.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Brazilian company registry (CNPJ-linked)
Shareholder and partner records (28.1M rows)
Company profiles and metadata (4.1M rows)
User accounts and authentication credentials (6,040 users)
Password hashes and OAuth/API tokens
Session data and user PII (203K+ rows)
Financial transactions and payment data
Order and checkout process records
Commercial metrics and usage analytics
User-saved filters and saved lists (345K+ rows)

What the group claims

Business Services

The leak post

captured from the group's site

```
{"article":{"id":118,"title":"Oportunidados","content":"\u003ch3\u003eBrazilian Corporate Master Data \u0026amp; Authentication System\u003c/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eItem\u003c/th\u003e\n\u003cth\u003eDetails\u003c/th\u003e\n\u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRepository\u003c/strong\u003e\u003c/td\u003e\n\u003ctd\u003e\u003ccode\u003eBrazil-Corporate-Data-Plus-Auth\u003c/code\u003e\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c/strong\u003e\u003c/td\u003e\n\u003ctd\u003eInternal production database\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCore Modules\u003c/strong\u003e\u003c/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCorporate Data:\u003c/strong\u003e\u003cbr\u003e• \u003ccode\u003ebrazilian_companies_socios_full\u003c/code\u003e: 28,146,721 rows – CNPJ‑linked shareholder/partner registry\u003cbr\u003e• \u003ccode\u003ebrazilian_companies_extras_full\u003c/code\u003e: 4,177,947 rows – extended company info\u003cbr\u003e• \u003ccode\u003ecompanies\u003c/code\u003e / \u003cc…

Sources

Victim siteoportunidados.com.br
Leak posthttp://direwolfcdkv5whaz2spehizdg22jsuf5aeje4asmetpbt6ri4jnd4qd.onion/api/public/articles/118

Source

Indexed 3 days 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 direwolf

Direwolf is a ransomware group that emerged in May 2025 with primarily financial motivations, having targeted 71 known victims across multiple sectors and geographic regions. The group's origin and potential affiliations remain undocumented in public threat intelligence reports, with no confirmed information regarding whether they operate as a Ransomware-as-a-Service model or as an independent entity. Their attack methodology and technical capabilities have not been extensively documented by major cybersecurity firms or government agencies, though their targeting patterns indicate a focus on manufacturing, technology, healthcare, and transportation/logistics sectors across Malaysia, the United States, Thailand, Singapore, and Taiwan. No major high-profile campaigns or significant ransomware demands have been publicly attributed to this group by CISA, FBI, or established security researchers such as Mandiant. Given the group's recent emergence and limited public documentation, their current operational status and long-term threat posture remain unclear, requiring continued monitoring by the cybersecurity community to establish a more comprehensive threat profile. The group has been linked to 126 public disclosures across our corpus. First observed on a leak site on May 27, 2025; most recent post September 4, 2026. The operation is currently active.

Also tracked as: DIRE WOLF.

Timeline of this disclosure

September 1, 2026Oportunidados listed by direwolfon the group's public leak site

Sector and geography

Geographically, Oportunidados is reported in Brazil, a country with 209 ransomware disclosures in our corpus.

If your organisation is affected

A listing by direwolf means Oportunidados 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 direwolf'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.