Skip to main content
Darkfield

Ransomware victim disclosure

← All victims

Abel Santos y Asociados

listed as AbelSantosyAsociados · Claimed by Knight · listed 2 years ago

29m
Age
since listed · data leaked

Status timeline

  1. ListedFeb 2, 2024
  2. Data leakeddate unknown

At a glance

Group
Knight
Status
Data leaked
Country
Argentina
Sector
Financial
Listed on leak site
Feb 2, 2024

About the victim

AI dossier — public-source company profile

Abel Santos y Asociados is an Argentine consulting firm specializing in regulatory, technical, medical, marketing, and administrative management for companies in pharmaceutical, cosmetic, dental, biomedical, and health product sectors. The firm positions itself as staffed by professionals with extensive national and international experience in health product manufacturing and marketing.

Industry
Management Consulting & Compliance Services (Pharmaceutical & Health Products)

Attack summary

Severity: high — Confirmed exfiltration of business data from a consulting firm with access to sensitive client information across pharmaceutical, cosmetic, and health product companies. Likely exposure of third-party regulated industry data and client confidential records.

Knight ransomware group claims to have exfiltrated data from Abel Santos y Asociados. The group advertises sample data files and proof screenshots (5 PNG images ranging 70–460 KB) hosted on their onion site, indicating both encryption and data theft.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Client company files (regulatory, technical, medical)
  • Marketing documentation
  • Administrative records
  • Consulting project files

The group's post references roughly 5 proof images proof files.

What the group claims

We'll provide a sample of the data. Enjoy:http://uzfrntnmwojla5v4w3xvpxerjg43kuzqxmtspqhi5qclwtof5ibgonyd.onion/AbelSantosyAsociados/sampledata.rarOur activities cover the regulatory, technical, medical, marketing, building and administrative management aspects of companies dedicated to the manufacturing and/or marketing of pharmaceutical, cosmetic, dental, biomedical, mass consumption, household health products, diagnostic reagents, nutritional/ dietary, phytotherapeutic and food.  Our areas of activity are under the responsibility of professionals with extensive national and international experience, developed in leading companies in the production and marketing of health products, who guarantee personalized attention, framed in excellence, reliability and confidentiality.1.png 74.46 KB2.png 75.2 KB3.png 136.72 KB4.png 460.44 KB5.png 70.5 KB

Sources

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.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

Disclosure context

About Knight

Knight is a relatively new ransomware group that emerged in September 2023, operating with primarily financial motivations and demonstrating a focus on targeting critical infrastructure and high-value sectors. The group's origin and specific affiliations remain largely undocumented in public threat intelligence reports, though their operational patterns suggest they operate as an independent entity rather than a established ransomware-as-a-service model. With 48 known victims since their emergence, Knight has shown a preference for targeting organizations across the United States, Brazil, Italy, Spain, and Germany, with particular focus on healthcare, manufacturing, media, and government sectors. Their attack methodology and specific technical capabilities have not been extensively documented by major security firms, though their targeting of healthcare and government entities suggests they employ effective initial access techniques and likely utilize double extortion tactics common among contemporary ransomware groups. While specific notable campaigns have not been widely publicized by CISA, FBI, or major security researchers, the group's consistent activity across multiple countries and high-value sectors indicates sustained operational capability. Knight appears to remain active as of current reporting, though detailed technical analysis and specific law enforcement actions against the group have not been publicly documented by authoritative sources. The group has been linked to 48 public disclosures across our corpus. First observed on a leak site on September 6, 2023; most recent post February 12, 2024. The operation is currently inactive.

Timeline of this disclosure

  • February 2, 2024AbelSantosyAsociados listed by Knighton the group's public leak site

Other recent disclosures by Knight

Knight has been linked to 48 public victims on Darkfield. A sample of the most recent:

See the full Knight dossier →

Sector and geography

This disclosure adds to ransomware activity in the Financial sector, which has 426 disclosures indexed across all operators we track. Geographically, AbelSantosyAsociados is reported in Argentina, a country with 67 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Knight means AbelSantosyAsociados 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.
  • Monitor for the data appearing on Knight'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.