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OneDealer

hellcat

This record tracks a ransomware attack claimed by the hellcat group against OneDealer. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.

Window Zero

EXPOSURE GAP

Window Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.

-88days
t1 · Published t2 · Disclosed
Feb 25, 2025Nov 30, 2024
Country
Germany
Business Category
Retail / E-commerce
Employees
51-100
Discovered
2025-02-28
Published
February 25, 2025
Disclosed / Notified
Nov 30, 2024
Victim ID
nhsTbSV25Kbi

Attack Summary

We have obtained over 330,000 records from OneDealer partners, including sales reports, leads, customer data, and vehicle details with VINs and license plates. Affected companies include AutoHellas, AutoBesikos, KosmoCar, AWT, Karenta AE, QA, Proaxia, Hyundai, BMW, Audi, Kia,

Leak Screenshots

SAMPLE

Proof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for onedealer.com — indexed by HaveIBeenRansom.
6
found in Infostealer logs
17
found in Traditional breaches
0
found in Ransomware leaks
@TXTLOG_ALIEN — @TXTLOG_LINK - 491.txt
Database World ROC · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
linkedIN_2.7z.001
Database World ROC · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum 🪾 · breach
••• emails
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Visit Website View Group: hellcat
Legal Disclaimer: This ransomware victim record reflects information published on the operator's leak site. Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.