Was comoferta.com hit by ransomware?

comoferta.com was listed by the Darkvault 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 Darkvault ransomware group?

Darkvault 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 comoferta.com breach?

Darkvault published data attributed to comoferta.com. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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ComOferta

listed as comoferta.com · Claimed by Darkvault · listed 2 years ago

23m

Age

since listed · data leaked

Status timeline

ListedAug 8, 2024
Data leakeddate unknown

At a glance

Group: Darkvault
Status: Data leaked
Country: Brazil
Sector: Business Services
Listed on leak site: Aug 8, 2024

About the victim

AI dossier — public-source company profile

ComOferta is a Brazilian promotion-sharing platform that enables retailers to advertise consumer offers and allows users to discover, purchase, and share deals on social networks. The platform aggregates supermarket and retail offers across product categories ranging from groceries to electronics.

Industry: Software & Digital Services / E-commerce Platform

Attack summary

Severity: medium — Data has been published by the group (disclosed status confirmed), indicating exfiltration occurred. However, no specific sensitive data categories (PII at scale, financial, medical, regulatory) are confirmed in the leak post or site evidence. The platform primarily handles non-sensitive offer listings and user-generated deal shares, though user account databases could contain personal information.

Darkvault claims to have compromised ComOferta's systems. The group has published data from the attack but provided no specific details about encryption, exfiltration scope, or data types affected.

medium

Data the group says was taken

AI dossier — extracted from the leak post

user accounts
retailer/merchant information
offer data
platform source code or configuration

What the group claims

Developer of a promotion-sharing application designed to offer an online channel for the dissemination of offers. The company's platform allows retailers to advertise their offers to consumers who can still share these offers on their social networks, with basic information about the product, price and establishment, enabling users to buy and share deals with their network.

Sources

Victim sitecomoferta.com
Leak posthttp://mdhby62yvvg6sd5jmx5gsyucs7ynb5j45lvvdh4dsymg43puitu7tfid.onion//post/ZDczYjhiMTFjYWMwZTczZTY1NGRmMD

Source

Indexed 2 years 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 Darkvault

Darkvault is an emerging ransomware group first observed in April 2024, operating with apparent financial motivations and demonstrating a broad international targeting approach across multiple high-value sectors. The group's origin and specific affiliations remain undocumented in public threat intelligence reporting, though their operational patterns suggest a financially motivated cybercriminal organization rather than state-sponsored activity. Given the limited public documentation from established security research organizations, specific details regarding Darkvault's attack methodology, initial access vectors, encryption techniques, and potential data exfiltration practices have not been comprehensively analyzed or reported by major threat intelligence providers such as CISA, FBI, or Mandiant. The group has reportedly compromised approximately 55 victims across diverse geographic regions, with particular concentration in India, the United States, Brazil, the United Kingdom, and South Korea, while demonstrating sector preferences for technology companies, business services, healthcare organizations, transportation and logistics firms, and financial institutions. Due to the group's recent emergence and limited coverage in established threat intelligence channels, comprehensive details regarding notable high-profile campaigns, ransom demands, or specific law enforcement actions remain undocumented in publicly available security research. Current intelligence suggests the group maintains active operations as of late 2024, though the limited public reporting on Darkvault indicates either highly effective operational security or insufficient analysis by major cybersecurity research organizations. The group has been linked to 55 public disclosures across our corpus. First observed on a leak site on April 11, 2024; most recent post January 6, 2025. The operation is currently inactive.

Also tracked as: DARK VAULT.

Timeline of this disclosure

August 8, 2024comoferta.com listed by Darkvaulton the group's public leak site

Other recent disclosures by Darkvault

Darkvault has been linked to 55 public victims on Darkfield. A sample of the most recent:

See the full Darkvault dossier →

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 3,796 disclosures indexed across all operators we track. Geographically, comoferta.com is reported in Brazil, a country with 404 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Darkvault means comoferta.com 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 Darkvault'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.