Was Brontoo Technology Solutions hit by ransomware?

Brontoo Technology Solutions was listed by the Ransomexx ransomware operation (India), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Ransomexx ransomware group?

Ransomexx is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Brontoo Technology Solutions breach?

Ransomexx published data attributed to Brontoo Technology Solutions, around 146123 users records. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Brontoo Technology Solutions India Private Limited

listed as Brontoo Technology Solutions · Claimed by Ransomexx · listed 2 years ago

146123 users

Records

23m

Age

since listed · data leaked

Status timeline

ListedAug 10, 2024
Data leakeddate unknown

At a glance

Group: Ransomexx
Status: Data leaked
Country: India
Sector: Technology
Listed on leak site: Aug 10, 2024
Records: 146123 users

About the victim

AI dossier — public-source company profile

Brontoo Technology Solutions is an Indian fintech company that developed Osta, a unified digital payment platform offering secure transactions without traditional cards or wallets. The platform uses one-time digital numbers and QR codes for payments at merchants, ATMs, and partner networks, and provides services including bill payments, bank transfers, mobile recharges, and FASTag management.

Industry: Financial Technology & Digital Payments

Attack summary

Severity: high — Confirmed exfiltration of a large user database (146K+ records) from a financial services platform, exposing potential PII and payment-related information. Data publication and regulatory compliance breach claims elevate risk despite no ransom demand stated.

Ransomexx claims to have exfiltrated a database containing records of 146,123 Osta platform users. The group has published the data and made a commentary on PCI DSS compliance limitations.

high

Data the group says was taken

AI dossier — extracted from the leak post

User database records (146,123 users)
Payment platform user information
Customer payment credentials or transaction data (inferred)

What the group claims

OstaApp, developed by Brontoo Technology Solutions India Private Limited, is a digital payment platform designed to offer a secure, fast, and convenient way to make transactions without relying on traditional cards, wallets, or point-of-sale (POS) systems. The platform generates a unique, one-time-use digital number or QR code, which users can utilize for payments at registered merchants, partner ATMs, and more. Database with 146123 users leaked. Proof of PCI DSS compliance is not a guaranteed solution.

Sources

Source

Indexed 2 years 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.

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Disclosure context

About Ransomexx

RansomEXX is a financially motivated ransomware operation that emerged in May 2020, targeting organizations across multiple sectors with a focus on extracting ransom payments through encryption and data theft tactics. The group is believed to operate independently rather than as a Ransomware-as-a-Service model, with suspected ties to Russian-speaking cybercriminals based on code analysis and operational patterns observed by security researchers. RansomEXX operators typically gain initial access through exploiting public-facing applications, particularly targeting vulnerable VPN appliances and remote desktop services, before deploying their custom ransomware payload which uses strong encryption algorithms and is often preceded by data exfiltration to enable double extortion schemes where stolen data is threatened to be publicly released if ransom demands are not met. The group has been responsible for several high-profile attacks including incidents against government entities and major corporations, with documented cases involving ransoms in the millions of dollars, though specific victim details are often kept confidential by affected organizations. Based on recent threat intelligence reporting, RansomEXX continues to maintain active operations as of 2024, with ongoing campaigns targeting the technology and healthcare sectors primarily in the United States and Europe. The group has been linked to 86 public disclosures across our corpus. First observed on a leak site on May 14, 2020; most recent post June 20, 2026. The operation is currently inactive.

Also tracked as: Ransom X, Defray777, Defray-777, Defray 2018.

Timeline of this disclosure

August 10, 2024Brontoo Technology Solutions listed by Ransomexxon the group's public leak site

Records: 146123 users

Other recent disclosures by Ransomexx

Ransomexx has been linked to 86 public victims on Darkfield. A sample of the most recent:

See the full Ransomexx dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,549 disclosures indexed across all operators we track. Geographically, Brontoo Technology Solutions is reported in India, a country with 381 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Ransomexx means Brontoo Technology Solutions appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CERT-In (India), as required for your jurisdiction.
Monitor for the data appearing on Ransomexx's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.