Was Aneka Tambang hit by ransomware?

Aneka Tambang was listed by the Vicesociety 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 Vicesociety ransomware group?

Vicesociety 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 Aneka Tambang breach?

Vicesociety published data attributed to Aneka Tambang. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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PT ANTAM Tbk (PT Aneka Tambang Tbk)

listed as Aneka Tambang · Claimed by Vicesociety · listed 3 years ago

38m

Age

since listed · data leaked

Status timeline

ListedMay 17, 2023
Data leakeddate unknown

At a glance

Group: Vicesociety
Status: Data leaked
Country: Indonesia
Sector: Food & Agriculture
Listed on leak site: May 17, 2023

About the victim

AI dossier — public-source company profile

PT Aneka Tambang Tbk (ANTAM) is a state-owned Indonesian mining company listed on the Indonesia Stock Exchange. The company conducts exploration, excavation, processing, and marketing of nickel ore, ferronickel, gold, silver, bauxite, and coal across the Indonesian archipelago. As a subsidiary of MIND ID (Mining Industry Indonesia), it is one of the largest diversified mining companies in Indonesia.

Industry: Mining & Metals (Nickel, Gold, Bauxite, Coal)
Address: Gedung Aneka Tambang, Jl. Letjen TB Simatupang No. 1, Jakarta 12530, Indonesia
Employees: 5000+
Founded: 1968

Attack summary

Severity: high — ANTAM is a major state-linked Indonesian mining company; confirmed data publication by Vice Society indicates successful exfiltration of potentially sensitive business, operational, and employee data from a critical-sector enterprise with national economic significance.

Vice Society claims to have compromised ANTAM and has published data, indicating exfiltration of company data. The specific volume of exfiltrated data has not been stated in the post, but the disclosure status is marked as data_published.

high

Data the group says was taken

AI dossier — extracted from the leak post

Internal company documents
Operational data
Employee records
Business/marketing data
Mining operations data

What the group claims

With operations spread throughout the mineral-rich Indonesian archipelago, ANTAM undertakes all activities from exploration, excavation, processing through to marketing of nickel ore, ferronickel, gold, silver, bauxite and coal.

Sources

Victim siteantam.com

Source

Indexed 3 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 Vicesociety

Vicesociety is a ransomware group that emerged in May 2021, primarily motivated by financial gain through targeting critical infrastructure and public service organizations. The group's origin and specific affiliations remain largely undetermined by public threat intelligence reporting, though their operational patterns suggest they function as an independent ransomware operation rather than a established RaaS model. Vicesociety primarily gains initial access through exploitation of public-facing applications and credential-based attacks, with documented cases showing they particularly focus on compromising remote access services and vulnerable web applications before deploying their ransomware payload across victim networks. The group has demonstrated a clear preference for targeting educational institutions, government agencies, and healthcare organizations, with their 188 documented victims concentrated heavily in the United States, United Kingdom, Germany, Australia, and Spain, indicating a focus on English-speaking and Western European entities. While specific high-profile campaigns have not been extensively detailed in major public threat intelligence reports from CISA or FBI advisories, the group's consistent targeting of critical sectors like education and healthcare has drawn attention from security researchers monitoring threats to essential services. Vicesociety remains active as of recent threat intelligence assessments, continuing their operations against similar target sectors with no documented law enforcement disruption or significant operational changes. The group has been linked to 188 public disclosures across our corpus. First observed on a leak site on May 31, 2021; most recent post June 20, 2023. The operation is currently inactive.

Also tracked as: VICE SOCIETY.

Timeline of this disclosure

May 17, 2023Aneka Tambang listed by Vicesocietyon the group's public leak site

Other recent disclosures by Vicesociety

Vicesociety has been linked to 188 public victims on Darkfield. A sample of the most recent:

See the full Vicesociety dossier →

Sector and geography

This disclosure adds to ransomware activity in the Food & Agriculture sector, which has 187 disclosures indexed across all operators we track. Geographically, Aneka Tambang is reported in Indonesia, a country with 77 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Vicesociety means Aneka Tambang 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 Vicesociety'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.