Was PT Brantas Abipraya hit by ransomware?

PT Brantas Abipraya was listed by the Everest ransomware operation (Indonesia), 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 Everest ransomware group?

Everest 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 PT Brantas Abipraya breach?

Everest published data attributed to PT Brantas Abipraya. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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PT Brantas Abipraya

Claimed by Everest · listed 2 months ago

Age

since listed · data leaked

Status timeline

ListedMar 31, 2026
Data leakeddate unknown

At a glance

Group: Everest
Status: Data leaked
Country: Indonesia
Sector: Construction
Listed on leak site: Mar 31, 2026

About the victim

AI dossier — public-source company profile

PT Brantas Abipraya is an Indonesian state-owned enterprise (BUMN) specialising in the construction of water infrastructure, including dams, irrigation systems, and other civil engineering projects across Indonesia. The company operates under the supervision of the Ministry of State-Owned Enterprises and undertakes large-scale government-funded infrastructure contracts. It is one of Indonesia's major construction SOEs with a presence across multiple provinces.

Industry: State-Owned Construction & Infrastructure Contracting
Address: Jl. D.I. Panjaitan Kav. 14, Jakarta 13340, Indonesia
Employees: 1001-5000
Founded: 1980

Attack summary

Severity: high — The victim is a state-owned enterprise involved in critical national infrastructure (dams, irrigation, civil works), and the status is 'data_published', indicating confirmed exfiltration and public release of data. Compromise of a government-linked infrastructure contractor carries significant national security and operational implications.

The Everest ransomware group claims to have compromised PT Brantas Abipraya and has listed the incident as 'data_published', indicating exfiltration and publication of data. The leak post content is minimal and does not detail specific data categories or volumes exfiltrated.

high

Data the group says was taken

AI dossier — extracted from the leak post

Corporate documents
Financial records
Employee data
Project/contract data

Original description

AI-summarised, not from the leak post

PT Brantas Abipraya is a state-owned Indonesian construction company. It was established in 1980 with the main objective to develop water infrastructure including dams, irrigation systems, and hydroelectric power plants. In recent years, the company has expanded its scope to cover other construction works such as airports, roads, bridges, buildings, and other civil infrastructure projects.

The leak post

captured from the group's site

© 2026, All rights reserved
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Sources

Leak posthttp://ransomocmou6mnbquqz44ewosbkjk3o5qjsl3orawojexfook2j7esad.onion/news/PT_Brantas_Abipraya/

Source

Indexed 2 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.

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Disclosure context

About Everest

Everest is a financially-motivated ransomware group that emerged in September 2021, operating with a focus on profit-driven extortion campaigns against organizations primarily in the United States and Europe. The group's country of origin and specific affiliations remain undocumented in public threat intelligence reporting, though their operational patterns suggest they likely operate as an independent entity rather than a formal ransomware-as-a-service model. Limited public documentation exists regarding Everest's specific attack methodologies, initial access vectors, or technical capabilities, though their victim profile indicates they employ standard ransomware tactics targeting a diverse range of sectors including healthcare, technology, business services, and manufacturing organizations. Since their emergence, Everest has claimed responsibility for attacks against 339 victims across multiple countries, with the United States, United Kingdom, Italy, Germany, and Spain representing their primary geographic targets, though no specific high-profile incidents or major ransoms have been publicly documented by law enforcement or major security firms. As of current reporting, Everest appears to remain an active threat actor, though the limited public intelligence available suggests they operate as a lower-tier ransomware group compared to more prominent and well-documented criminal organizations. The group has been linked to 369 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post May 29, 2026. The operation is currently active.

Timeline of this disclosure

March 31, 2026PT Brantas Abipraya listed by Evereston the group's public leak site

Other recent disclosures by Everest

Everest has been linked to 369 public victims on Darkfield. A sample of the most recent:

See the full Everest dossier →

Sector and geography

This disclosure adds to ransomware activity in the Construction sector, which has 415 disclosures indexed across all operators we track. Geographically, PT Brantas Abipraya is reported in Indonesia, a country with 23 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Everest means PT Brantas Abipraya 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.
Monitor for the data appearing on Everest'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.