Ransomware victim disclosure

CH Karnchang Public

Claimed by worldleaks · listed 4 hours ago

Today

Age

since listed · data leaked

Status timeline

Listed
Jun 5, 2026
Data leaked

At a glance

Group: worldleaks
Status: Data leaked
Country: TH
Sector: Construction
Listed on leak site: Jun 5, 2026

Original description

AI-summarised, not from the leak post

CH Karnchang Public Company Limited is a major Thai construction and engineering conglomerate headquartered in Bangkok, Thailand. The company specializes in large-scale infrastructure projects including highways, expressways, dams, tunnels, and civil engineering works. It operates primarily in Thailand but also undertakes international projects. CH Karnchang is listed on the Stock Exchange of Thailand and is considered one of the country's leading construction firms.

Sources

Victim sitewww.ch-karnchang.co.th
Leak posthttps://worldleaksartrjm3c6vasllvgacbi5u3mgzkluehrzhk2jz4taufuid.onion/companies/5944500838

Source

Indexed 4 hours 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 worldleaks

Based on the limited available data, worldleaks is a recently emerged ransomware group that was first observed in May 2025 and appears to be primarily financially motivated, having claimed 134 victims in a relatively short timeframe since its emergence. The group's origin and organizational structure remain unclear, with no publicly documented information from major cybersecurity firms or law enforcement agencies regarding their country of origin, potential affiliations, or operational model. Their targeting patterns indicate a focus on English-speaking countries, particularly the United States, United Kingdom, and Canada, with additional activity observed in Germany and Japan, while their sector targeting shows a preference for healthcare, technology, manufacturing, and consumer services organizations. Due to the group's recent emergence and limited public documentation by established threat intelligence sources, specific details about their attack methodologies, encryption techniques, extortion tactics, and notable campaigns have not yet been comprehensively analyzed or reported by organizations such as CISA, FBI, or major cybersecurity research firms. The group appears to remain active as of the most recent observations, though comprehensive threat intelligence profiling awaits further analysis and documentation by established cybersecurity authorities. The group has been linked to 159 public disclosures across our corpus. First observed on a leak site on May 18, 2025; most recent post June 5, 2026. The operation is currently active.

Timeline of this disclosure

June 5, 2026CH Karnchang Public listed by worldleakson 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, CH Karnchang Public is reported in TH, a country with 45 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.