Disclosure context

About crypto24

Crypto24 is a recently emerged ransomware group first observed in April 2025, with a primary financial motivation evidenced by their targeting of high-value sectors across multiple geographic regions. The group's origin and affiliations remain unclear due to their recent emergence, though their targeting pattern suggests either independent operations or a new ransomware-as-a-service offering given the diverse geographic spread of their 43 documented victims. Their attack methodology and specific technical capabilities have not yet been thoroughly documented by major threat intelligence providers, though their targeting of technology, financial services, healthcare, and business services sectors indicates they likely employ common initial access vectors such as phishing or exploitation of public-facing applications to gain entry into victim networks. The group has demonstrated a preference for targeting organizations primarily in the United States while also conducting operations across Southeast Asia including Malaysia, Singapore, and Indonesia, as well as extending their reach to Egypt, suggesting either a globally distributed affiliate network or opportunistic targeting based on vulnerable infrastructure discovery. Crypto24 remains active as of the latest available intelligence reporting, though given their recent emergence, comprehensive details about their specific tactics, techniques, and procedures await further analysis by established cybersecurity research organizations. The group has been linked to 49 public disclosures across our corpus. First observed on a leak site on April 8, 2025; most recent post May 18, 2026. The operation is currently active.

Timeline of this disclosure

May 18, 2026O'Farrell listed by crypto24on the group's public leak site

Data size: 700 GB

Sector and geography

This disclosure adds to ransomware activity in the Legal sector, which has 21 disclosures indexed across all operators we track. Geographically, O'Farrell is reported in Argentina, a country with 16 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

← All victims

O'Farrell

Claimed by crypto24 · listed 3 days ago

700 GB

Data size

Age

since listed · listed for ransom

Status timeline

Listed
May 18, 2026

Current state: Listed for ransom

At a glance

Group: crypto24
Status: Listed for ransom
Country: Argentina
Sector: Legal
Listed on leak site: May 18, 2026
Data size: 700 GB

About the victim

AI dossier — public-source company profile

O'Farrell is a leading full-service law firm based in Argentina, described as having the longest track record in the country. The firm operates in the legal sector providing comprehensive legal services. No further detail is available from the public site.

Industry: Legal Services – Full-Service Law Firm

Attack summary

Severity: high — A full-service law firm holds highly sensitive client communications, privileged legal documents, and potentially regulated PII; exfiltration of such data from a legal practice constitutes significant exposure of confidential and potentially regulated information, warranting a high severity rating even without a confirmed exact volume for this specific victim.

The group crypto24 claims to have successfully acquired and exfiltrated 700GB of proprietary data from victims listed in the same post; the specific volume attributable to O'Farrell alone is not stated, but the firm is listed among confirmed exfiltration targets.

high

Data the group says was taken

AI dossier — extracted from the leak post

Proprietary business data
Legal case files (inferred)
Client records (inferred)

What the group claims

A leading full service law firm in Argentina, with the longest track record.

The leak post

captured from the group's site

## Qatar Biomedical Research Institute (QBRI)
QBRI is a premier research institute under Hamad Bin Khalifa University focused ...
Rowad Modern Engineering (RME) is a leading Egyptian construction conglomerate s ...
We have successfully acquired and exfiltrated 700GB of proprietary data from the ...
Founded in 1993 in Monterrey, Mexico, Katcon is a leading global Tier 1 supplier ...
ActionPower is an AI innovation company that automates documentation through 'da ...
O'Farrell is a leading full service law firm in Argentina, with the longest trac ...

Screenshot of the leak post

Sources

Leak posthttp://j5o5y2feotmhvr7cbcp2j2ewayv5mn5zenl3joqwx67gtfchhezjznad.onion

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.