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

January 13, 2026Chemsain Konsultant Sdn Bhd listed by direwolfon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, Chemsain Konsultant Sdn Bhd 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

← All victims

Chemsain Konsultant Sdn Bhd

Claimed by direwolf · listed 4 months ago

Age

since listed · data leaked

Status timeline

Listed
Jan 13, 2026
Data leaked

At a glance

Group: direwolf
Status: Data leaked
Country: MY
Sector: Manufacturing
Listed on leak site: Jan 13, 2026

About the victim

AI dossier — public-source company profile

Chemsain Konsultant Sdn Bhd, established in 1984 and headquartered in Sarawak, Malaysia, is one of Malaysia's largest consultancy firms providing services across environment, engineering, occupational safety and health, laboratory testing, environmental monitoring, water infrastructure, and information management. The company serves clients across Sarawak, Sabah, Peninsular Malaysia, and Brunei, with notable projects for clients including PETRONAS and Japan Drilling Co. It also operates subsidiary brands including Sunnydale 1928 and Chemaquous.

Industry: Environmental & Occupational Safety Consulting
Address: Kuching, Sarawak, Malaysia
Founded: 1984

Attack summary

Severity: high — Data has been published (disclosed status: data_published), confirming exfiltration. The company holds significant client project data, potentially including regulated environmental and occupational health records for major industrial clients such as PETRONAS, representing significant business and potentially sensitive data exposure.

The direwolf ransomware group claims a data-published disclosure against Chemsain Konsultant Sdn Bhd, indicating that exfiltrated data has been published. No ransom amount or specific data size was stated in the post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Corporate documents
Engineering project files
Environmental assessment reports
Client records
Employee/HR data
Laboratory data

What the group claims

Architecture, Engineering & Design

Sources

Victim sitechemsain.com
Leak posthttp://direwolfcdkv5whaz2spehizdg22jsuf5aeje4asmetpbt6ri4jnd4qd.onion/api/public/articles/66

Source

Indexed 4 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.