Disclosure context

About sinobi

Based on the limited publicly available information, Sinobi appears to be a recently emerged ransomware operation first observed in July 2025, with financial motivations evidenced by their targeting of 268 victims across multiple sectors. The group's origin and specific affiliations remain undocumented in public threat intelligence reporting, and there is 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 security research organizations, though their targeting patterns suggest a broad opportunistic approach rather than highly selective operations. The group demonstrates a preference for targeting organizations in the United States, India, United Kingdom, Canada, and Italy, with a focus on manufacturing, healthcare, construction, and technology sectors, suggesting they may exploit common vulnerabilities across these industries rather than deploying sophisticated, sector-specific attack vectors. No major high-profile campaigns or significant law enforcement actions against Sinobi have been publicly reported by CISA, FBI, or established threat intelligence firms. Given the recent emergence timeline and lack of extensive public documentation, the group's current operational status and long-term trajectory remain unclear, though the substantial victim count suggests continued activity as of the last available reporting period. The group has been linked to 274 public disclosures across our corpus. First observed on a leak site on July 5, 2025; most recent post May 8, 2026. The operation is currently active.

Timeline of this disclosure

February 5, 2026Exco listed by sinobion the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, Exco is reported in United States, a country with 7,392 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

EXCO Industrial

listed as Exco · Claimed by sinobi · listed 3 months ago

Age

since listed · data leaked

Status timeline

Listed
Feb 5, 2026
Data leaked

At a glance

Group: sinobi
Status: Data leaked
Country: United States
Sector: Not Found
Listed on leak site: Feb 5, 2026

About the victim

AI dossier — public-source company profile

EXCO Industrial (operating as Exco at www.exco.com) is a US-based distributor and custom fabricator of industrial electrical equipment, including switchgear, motor controls, enclosures, circuit breakers, drives, and power equipment. The company offers custom switchgear solutions, MCC buckets, distribution panels, and retrofit/recondition/repair services. They carry major brands such as ABB, Eaton, Siemens, Square D, and others, and operate multiple US locations.

Industry: Electrical Switchgear & Industrial Electrical Equipment Distribution

Attack summary

Severity: medium — Data is listed as published, indicating confirmed exfiltration and disclosure has occurred; however, no specific sensitive data categories, file counts, or data volume are described, and the leak post description is inconsistent with the actual company, limiting severity assessment.

The sinobi ransomware group claims to have attacked Exco and has published data (disclosed status: data_published). The group's leak post description does not match the actual victim — it describes a French accounting and consulting network rather than the US industrial electrical distributor at www.exco.com, suggesting the post text may be erroneous or deliberately misleading; the actual exfiltrated data contents are not detailed in the post.

medium

What the group claims

Exco is a network of accounting, consulting, and audit firms that simplifies entrepreneurship across France and internationally. They offer services in accounting, audit, tax, social management, human resources, and legal advice, ensuring tailored support for businesses in various sectors. With a commitment to responsible growth and expertise in complex financial situations, Exco provides guidance in corporate management, financial transactions, and sustainability. Their multidisciplinary teams work closely with clients to foster business development throughout every stage of a company's lifecycle.

Sources

Victim sitewww.exco.com
Leak posthttp://sinobi6ftrg27d6g4sjdt65malds6cfptlnjyw52rskakqjda6uvb7yd.onion/leaks/6984ee426387a4c9a2573162

Source

Indexed 3 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.