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Trant Engineering

listed as trant.co.uk · Claimed by Cuba · listed 4 years ago

44m
Age
since listed · data leaked

Status timeline

  1. ListedNov 4, 2022
  2. Data leakeddate unknown

At a glance

Group
Cuba
Status
Data leaked
Country
United Kingdom
Sector
Construction
Listed on leak site
Nov 4, 2022

About the victim

AI dossier — public-source company profile

Trant Engineering is a privately-owned UK engineering and construction contractor headquartered in Portsmouth, England. The company delivers major mechanical, electrical, civil, and process engineering projects across sectors including defence, water, energy, and infrastructure. It operates across the United Kingdom and has been active for several decades as a tier-one contractor.

Industry
Engineering & Construction (Mechanical, Electrical & Civil)
Address
Trant House, Portfield Road, Portsmouth, PO3 5EX, United Kingdom
Employees
501-1000
Founded
1946

Attack summary

Severity: high — Data is marked as published by a known ransomware group against a major UK engineering contractor with defence and critical infrastructure clients, indicating confirmed exfiltration of significant business data with potential national security adjacency.

The Cuba ransomware group claims to have compromised Trant (trant.co.uk) and the disclosure status indicates data has been published, though no specific data volume or ransom demand was captured in the post.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Financial documents
  • Corporate data
  • Employee records
  • Project/contract documentation

Sources

Source

Indexed 4 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 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

  • November 4, 2022trant.co.uk listed by Cubaon the group's public leak site

Other recent disclosures by Cuba

Cuba has been linked to 105 public victims on Darkfield. A sample of the most recent:

See the full Cuba dossier →

Sector and geography

This disclosure adds to ransomware activity in the Construction sector, which has 988 disclosures indexed across all operators we track. Geographically, trant.co.uk is reported in United Kingdom, a country with 1,217 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Cuba means trant.co.uk 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, NCSC (United Kingdom), as required for your jurisdiction.
  • Monitor for the data appearing on Cuba'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.