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Pertamina

Claimed by Ransomhouse · listed 4 hours ago

Today
Age
since listed · data leaked

Status timeline

  1. ListedSep 17, 2026
  2. Data leakeddate unknown

At a glance

Group
Ransomhouse
Status
Data leaked
Country
Indonesia
Sector
Energy & Utilities
Listed on leak site
Sep 17, 2026

About the victim

AI dossier — public-source company profile

PT Pertamina (Persero) is Indonesia's state-owned energy company operating across upstream oil & gas exploration, downstream refining & distribution, power generation, and renewable energy. Based in Jakarta, it serves as a major national energy provider with multiple operational subholdings.

Industry
Oil & Gas; Energy
Address
Grha Pertamina, Jl. Medan Merdeka Timur No.11-13, Jakarta 10110, Indonesia

Attack summary

Severity: low — The post contains only a generic business description with no stated attack vector, no proof files advertised, no confirmed data exfiltration, and no operational impact claimed. This appears to be a listing or announcement only.

The leak post provides no specific attack details—it only describes Pertamina's business operations. No mention is made of encryption, data exfiltration, operational disruption, or proof of compromise.

low

What the group claims

Pertamina is an energy company primarily in the oil and gas sector. The company provides services for new and renewable energy, and other activities related to or supporting business activities in energy.

Sources

Source

Indexed 4 hours 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 Ransomhouse

Ransomhouse is a ransomware group that emerged in June 2021, operating primarily for financial gain through extortion campaigns targeting organizations across multiple sectors globally. The group's origin and specific affiliations remain unclear based on publicly available intelligence, though their operational patterns suggest they function as an independent cybercriminal organization rather than a traditional ransomware-as-a-service model. Ransomhouse employs double extortion tactics, stealing sensitive data before deploying their ransomware payload and threatening to publish the information on their leak site if victims refuse to pay the demanded ransom. The group has demonstrated a broad targeting approach, with documented attacks against 187 victims primarily concentrated in the United States, China, United Kingdom, Italy, and Spain, focusing heavily on healthcare, technology, business services, and manufacturing sectors. While specific high-profile campaigns have not been extensively documented by major security firms, the group's consistent victim count and geographic distribution indicate sustained operational capability since their emergence. As of current reporting, Ransomhouse remains active with no known major law enforcement disruptions or confirmed rebranding efforts. The group has been linked to 231 public disclosures across our corpus. First observed on a leak site on June 1, 2021; most recent post September 17, 2026. The operation is currently active.

Also tracked as: RANSOM HOUSE.

Timeline of this disclosure

  • September 17, 2026Pertamina listed by Ransomhouse on the group's public leak site

Other recent disclosures by Ransomhouse

Ransomhouse has been linked to 231 public victims on Darkfield. A sample of the most recent:

See the full Ransomhouse dossier →

Sector and geography

This disclosure adds to ransomware activity in the Energy & Utilities sector, which has 169 disclosures indexed across all operators we track. Geographically, Pertamina is reported in Indonesia, a country with 38 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Ransomhouse means Pertamina 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 Ransomhouse'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.