Disclosure context

About direwolf

Direwolf is a ransomware group that emerged in May 2025 with primarily financial motivations, having targeted 71 known victims across multiple sectors and geographic regions. The group's origin and potential affiliations remain undocumented in public threat intelligence reports, with no confirmed information regarding whether they operate as a Ransomware-as-a-Service model or as an independent entity. Their attack methodology and technical capabilities have not been extensively documented by major cybersecurity firms or government agencies, though their targeting patterns indicate a focus on manufacturing, technology, healthcare, and transportation/logistics sectors across Malaysia, the United States, Thailand, Singapore, and Taiwan. No major high-profile campaigns or significant ransomware demands have been publicly attributed to this group by CISA, FBI, or established security researchers such as Mandiant. Given the group's recent emergence and limited public documentation, their current operational status and long-term threat posture remain unclear, requiring continued monitoring by the cybersecurity community to establish a more comprehensive threat profile. The group has been linked to 71 public disclosures across our corpus. First observed on a leak site on May 27, 2025; most recent post January 13, 2026. The operation is currently active.

Timeline of this disclosure

November 26, 2025Meinhardt Malaysia listed by direwolfon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Construction sector, which has 415 disclosures indexed across all operators we track. Geographically, Meinhardt Malaysia is reported in MY, a country with 29 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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Meinhardt Malaysia

Claimed by direwolf · listed 6 months ago

Age

since listed · data leaked

Status timeline

Listed
Nov 26, 2025
Data leaked

At a glance

Group: direwolf
Status: Data leaked
Country: MY
Sector: Construction
Listed on leak site: Nov 26, 2025

About the victim

AI dossier — public-source company profile

Meinhardt Malaysia (Jurutera Perunding Meinhardt Sdn. Bhd.) is a subsidiary of the Meinhardt Group, a leading global planning, engineering, and project management firm operating from 55 offices across 5 continents. The Malaysian entity provides professional engineering and project management services spanning building engineering, transportation, water & environment, and urban development. The group was established in 1973 and has delivered numerous landmark infrastructure and building projects across multiple sectors.

Industry: Engineering Consultancy & Project Management
Employees: 1001-5000
Founded: 1973

Attack summary

Severity: high — Data has been published (confirmed exfiltration) from a major multinational engineering consultancy with operations across sensitive infrastructure sectors including energy, transportation, water, and government-adjacent urban development projects; likely includes proprietary project designs, client data, and potentially sensitive infrastructure plans.

The direwolf ransomware group claims to have compromised Meinhardt Malaysia and has published data (disclosed status: data_published), indicating exfiltration of company data. No ransom amount or specific data volume has been stated in the post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Engineering project files
Project management documentation
Corporate business data
Employee records
Client information

Original description

AI-summarised, not from the leak post

Meinhardt Malaysia is an engineering consultancy firm that offers a diverse range of professional engineering and project management services. The company was established in 1973 and it's a subsidiary of the Meinhardt Group. Their service spans across multiple industries including Building Engineering, Transportation, Water & Environment, and Urban Development. They have numerous landmark projects in their portfolio including the planning and design of technologically advanced buildings.

Sources

Victim sitemeinhardtgroup.com
Leak posthttp://direwolfcdkv5whaz2spehizdg22jsuf5aeje4asmetpbt6ri4jnd4qd.onion/api/public/articles/47

Source

Indexed 6 months 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.