Disclosure context

About Cuba

The Cuba ransomware group is a financially-motivated cybercriminal organization that emerged in February 2021 and has since conducted attacks against at least 105 known victims globally. The group operates as an independent ransomware operation with suspected ties to Russian-speaking cybercriminals, though their exact country of origin remains unconfirmed by law enforcement agencies. Cuba ransomware operators primarily gain initial access through compromised Remote Desktop Protocol (RDP) credentials, exploitation of Microsoft Exchange vulnerabilities, and phishing campaigns, subsequently deploying their custom Cuba ransomware payload which encrypts victim files while exfiltrating sensitive data before encryption as part of their double extortion strategy. The group has particularly targeted organizations in the United States, United Kingdom, France, Australia, and Belgium, with a notable focus on critical infrastructure sectors including healthcare, financial services, manufacturing, and energy companies. According to FBI reporting, the Cuba ransomware group has demanded ransom payments ranging from hundreds of thousands to millions of dollars from their victims. As of recent threat intelligence assessments, the Cuba ransomware group remains active and continues to pose a significant threat to organizations across multiple sectors and geographic regions. The group has been linked to 105 public disclosures across our corpus. First observed on a leak site on February 3, 2021; most recent post February 1, 2024. The operation is currently inactive.

Also tracked as: COLDDRAW, Fidel.

Timeline of this disclosure

July 31, 2023hydrex.co.uk listed by Cubaon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,640 disclosures indexed across all operators we track. Geographically, hydrex.co.uk is reported in United Kingdom, a country with 902 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

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Hydrex

listed as hydrex.co.uk · Claimed by Cuba · listed 3 years ago

34m

Age

since listed · data leaked

Status timeline

Listed
Jul 31, 2023
Data leaked

At a glance

Group: Cuba
Status: Data leaked
Country: United Kingdom
Sector: Business Services
Listed on leak site: Jul 31, 2023

About the victim

AI dossier — public-source company profile

Hydrex is one of the largest suppliers of outsourced mobile plant solutions in the United Kingdom, established in 1985. The company operates 13 depots and one support centre nationwide, maintaining a fleet of over 1,200 machines. It provides mobile plant hire and related services across the UK.

Industry: Mobile Plant & Equipment Hire / Outsourced Plant Solutions
Founded: 1985

Attack summary

Severity: high — Data has been published by the threat actor (data_published status), confirming exfiltration of business data from a significant UK infrastructure services company with nationwide operations, though the exact nature and sensitivity of the data is not fully enumerated.

The Cuba ransomware group claims to have attacked Hydrex and has published data (disclosed status: data_published), suggesting exfiltration of company data, though the specific data types and volume are not detailed in the truncated post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Company internal data
Potentially operational records

What the group claims

Established in 1985, with 13 depots and one support centre nationwide, Hydrex is one of the largest suppliers of outsourced mobile plant solutions in the UK.Hydrex has a fleet totaling over 1200 machines. The company has invested in...

Sources

Victim sitehydrex.co.uk
Leak posthttp://cuba4ikm4jakjgmkezytyawtdgr2xymvy6nvzgw5cglswg3si76icnqd.onion/company/hydrex.co.uk

Source

Indexed 3 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.