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

December 22, 2025Ranger Investigation Guard listed by direwolfon 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, Ranger Investigation Guard 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.

Ransomware victim disclosure

← All victims

Ranger Investigation Guard Co., Ltd.

listed as Ranger Investigation Guard · Claimed by direwolf · listed 5 months ago

Age

since listed · data leaked

Status timeline

Listed
Dec 22, 2025
Data leaked

At a glance

Group: direwolf
Status: Data leaked
Country: TH
Sector: Business Services
Listed on leak site: Dec 22, 2025

About the victim

AI dossier — public-source company profile

Ranger Investigation Guard Co., Ltd. is a Thai professional security services company with over 40 years of experience (founded circa 1992 per domain). The company provides permanent and event-based security guard services, electronic security systems, and trained security personnel operating 24 hours a day. It is licensed under Royal Thai Police regulations and serves clients across Thailand.

Industry: Security Guard & Investigation Services
Founded: 1992

Attack summary

Severity: medium — Data has been published by the threat actor, indicating confirmed exfiltration, but no specific data volume, regulated PII at scale, or critical-infrastructure impact has been evidenced in the post. The company handles security contracts and personnel records which carry moderate sensitivity.

The direwolf ransomware group claims to have compromised Ranger Investigation Guard Co., Ltd. and has published data (disclosed status: data_published); no specific ransom demand or data volume was stated in the post.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Company internal data
Employee records
Client/contract information

What the group claims

Business Services

Sources

Victim siteranger1992.com
Leak posthttp://direwolfcdkv5whaz2spehizdg22jsuf5aeje4asmetpbt6ri4jnd4qd.onion/api/public/articles/50

Source

Indexed 5 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.