# Pertamina targeted by ransomware group

Published: 2026-07-31 · Severity: high · Sectors: energy
Canonical: https://vorant.io/reports/2ca0b577-f554-578d-8054-d684fbe80c7c/pertamina-targeted-by-ransomware-group

> Indonesian state oil company Pertamina listed as victim by ransomware operators with 1495 compromised employees.

Pertamina, Indonesia's state-owned oil and gas company, has been identified as a victim by ransomware operators and indexed on ransomware.live. The threat intelligence indicates approximately 1495 compromised employee accounts, 26510 compromised user credentials, and 613 third-party employee credentials were obtained during the incident. The attack exposed an external attack surface of 200 resources and multiple DNS records associated with Pertamina's domain infrastructure. The posting suggests the attackers gained access to significant employee credential databases and third-party integrations, a common precursor to ransomware deployment or data exfiltration campaigns. This represents a material compromise of a critical infrastructure operator in the energy sector.

## Mentioned in this report

- Threat actors: The Gentlemen

1 detection for this report is in the app: the rules that match its indicators, the Sigma rules already converted to Splunk SPL, to Elastic where their fields map onto Elastic's integrations and to Microsoft Defender XDR KQL wherever Defender records the activity, and the YARA and Suricata. A new account gets three days of them free.

Source reporting: https://www.ransomware.live/id/UGVydGFtaW5hQHRoZWdlbnRsZW1lbg==

---

This is the free public brief from Vorant Threat Intelligence. When citing, attribute "Vorant" and link https://vorant.io/reports/2ca0b577-f554-578d-8054-d684fbe80c7c/pertamina-targeted-by-ransomware-group.
In the app the same report carries its extracted indicators, its detections (Splunk SPL already written, plus Elastic and Microsoft KQL where they apply), live profiles of the actors and CVEs it names, and the vendor research on the same campaign. Slack alerts fire on the vendors, sectors and countries a reader follows. A new account starts with three days of all of it, no card: https://vorant.io/signup