Disclosure context

About anubis

Anubis is a recently emerged ransomware group that began operations in February 2025, primarily motivated by financial gain through encryption and extortion attacks. The group has demonstrated rapid expansion, accumulating 65 documented victims within a short operational timeframe. Given the group's recent emergence, limited information is publicly available regarding their specific country of origin, organizational structure, or confirmed affiliations with other cybercriminal entities, though their operational patterns suggest they may operate as an independent group or small-scale ransomware-as-a-service operation. Their attack methodology appears to focus on opportunistic targeting across multiple geographic regions, with victims concentrated primarily in the United States, Australia, Canada, the United Kingdom, and France, indicating either English-language proficiency or the use of automated tools that facilitate cross-border operations. The group demonstrates a clear preference for targeting healthcare organizations and manufacturing companies, followed by business services and technology sectors, suggesting they prioritize organizations with critical operational dependencies that may be more likely to pay ransoms quickly. Due to the group's recent emergence in early 2025, there is insufficient publicly documented information from established cybersecurity firms or law enforcement agencies regarding their specific technical capabilities, encryption methods, or whether they employ double or triple extortion tactics involving data theft and leak sites. As of current reporting, Anubis remains an active threat with continued victim acquisition, though the full scope of their capabilities and long-term operational sustainability remains to be determined as security researchers continue to analyze their activities. The group has been linked to 77 public disclosures across our corpus. First observed on a leak site on February 25, 2025; most recent post May 13, 2026. The operation is currently active.

Timeline of this disclosure

April 7, 2026Star Fuels listed by anubison the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Energy sector, which has 374 disclosures indexed across all operators we track.

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

Star Fuels

Claimed by anubis · listed 1 month ago

43d

Age

since listed · data leaked

Status timeline

Listed
Apr 7, 2026
Data leaked

At a glance

Group: anubis
Status: Data leaked
Sector: Energy
Listed on leak site: Apr 7, 2026

About the victim

AI dossier — public-source company profile

Star Fuels is described as a small fuel supply services company. Based on the leak post categorisation, the company operates in fuel distribution or supply. No further detail about location or scale is available from the post or a public site.

Industry: Fuel Supply & Distribution

Attack summary

Severity: medium — Data is confirmed published (disclosed status: data_published) with 30 GB / 14,726 files exfiltrated; however the company is described as small, no regulated sensitive data categories (medical, financial PII at scale, government) are explicitly identified, and the data inventory is not itemised beyond a general file count.

The Anubis group claims to have exfiltrated approximately 30 GB of data comprising 14,726 files from Star Fuels, publishing the data as an open breach disclosure on their leak blog.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Business/operational files (14,726 files, ~30 GB)

What the group claims

Data breach at a small fuel company.

The leak post

captured from the group's site

Anubis blog ANUBIS NEWS FAQ ABOUT RULES English English Español Русский 中文 Deutsch BLOGS Accounting / 256 GB / 375,823 files A.R.Ge.Co Accounting firm data breach. OPEN Dental Clinic / 86 GB / 118,389 files Colorado Dental Wellness Center Clients’ medical data breach. OPEN Finance / 185 GB / 202,005 files Marnell Financial Services Data breach at financial company. OPEN Digital payment services and card-accounts / 20 GB Tractial A small but substantial data breach at a fintech company. OPEN Top Secret Patients data / 4,1 TB / 1,099,106 files ViaQuest Large-scale data breach at a care provider for seriously ill patients. OPEN Top Secret Law firm / 1.3 TB / 325,841 files Samuel I. White, PC Significant breach at a law firm. OPEN Fuel supply services / 30 GB / 14,726 files Star Fuels Data breach at a small fuel company. OPEN IT / 26 GB / 42,657 files Tesla Systems Careless IT contractor jeopardizes client security. OPEN [AU] Airlines &amp; Air Services / 57 GB / 68,046 files Shine Aviation Aviation firm data breach. OPEN Advertising Networks / 1.4 TB / 843,230 files Publishers Clearing House The fall of a sweepstakes giant. OPEN Software &amp; Cybersecurity / 33 GB / 30,497 files Scal…

Sources

Leak posthttp://om6q4a6cyipxvt7ioudxt24cw4oqu4yodmqzl25mqd2hgllymrgu4aqd.onion/r/6QprKFSowk18qEbHPxiFQ5SpAd64ik2Pvu1oI27AJAIV3b9GbpjW2wJKo9x+VMK3b6lf3uWdaX3bcjTK0GFWS0JZRHdm

Source

Indexed 1 month 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.