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Uniproof

listed as uniproof.com.br · Claimed by Babuk · listed 1 year ago

15m
Age
since listed · data leaked

Status timeline

  1. ListedApr 1, 2025
  2. Data leakeddate unknown

At a glance

Group
Babuk
Status
Data leaked
Country
Brazil
Listed on leak site
Apr 1, 2025

About the victim

AI dossier — public-source company profile

Uniproof is a Brazilian platform specializing in electronic document registration in notary offices and blockchain. The company provides digital signature collection, document notarization, and compliance tools designed to eliminate paper-based processes while maintaining legal validity under Brazilian law, including LGPD compliance.

Industry
Legal Technology & Digital Document Registration
Address
Av. Queiroz Filho, 1700 - Vila Hamburguesa, São Paulo - SP, 05319-000, Brasil

Attack summary

Severity: medium — Data published by the group with no detailed proof provided. The company handles sensitive legal and financial documents, notary records, and customer PII at scale, which would be high-severity if confirmed; however, the minimal disclosure and lack of proof inventory suggests either limited exfiltration or early-stage leak post. Medium reflects the legitimate sensitivity of the data type and published status without confirmed proof.

Babuk claims to have attacked Uniproof and published data. The leak post provides minimal detail on the nature of the breach (encryption, exfiltration, or both) or specific data categories compromised.

medium

Data the group says was taken

AI dossier — extracted from the leak post
  • Electronic documents
  • Digital signatures
  • Customer account information
  • Notary registration records

What the group claims

uniproof.com.br

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 Babuk

Babuk is a ransomware group that emerged in October 2020, operating primarily for financial gain through extortion campaigns targeting organizations across multiple sectors. The group is believed to have originated from Russian-speaking cybercriminal networks and operates independently rather than as a traditional Ransomware-as-a-Service model, though they have shown willingness to collaborate with affiliates. Babuk typically gains initial access through exploitation of unpatched vulnerabilities in public-facing applications and weak remote desktop protocol credentials, employs double extortion tactics by exfiltrating sensitive data before deploying their custom encryption malware, and threatens to publish stolen information on their dedicated leak site if ransom demands are not met. The group gained significant notoriety in May 2021 when they successfully breached the Washington D.C. Metropolitan Police Department, stealing and threatening to release sensitive law enforcement data including information on criminal investigations and police personnel. Following increased law enforcement attention after the police department attack, Babuk announced in May 2021 that they were ceasing ransomware operations and would focus solely on data theft and extortion, though various security researchers have observed continued sporadic activity from the group or actors using similar tools and techniques. The group has been linked to 188 public disclosures across our corpus. First observed on a leak site on October 25, 2020; most recent post April 23, 2025. The operation is currently inactive.

Timeline of this disclosure

  • April 1, 2025uniproof.com.br listed by Babukon the group's public leak site

Other recent disclosures by Babuk

Babuk has been linked to 188 public victims on Darkfield. A sample of the most recent:

See the full Babuk dossier →

Sector and geography

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

If your organisation is affected

A listing by Babuk means uniproof.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 Babuk'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.