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Cyber Threat
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Ransomware victim Energy & Utilities

PT Indo Tambangraya Megah

Listed by Ransomhouse on · organisation based in Indonesia

www.itmg.co.id

Disclosed
Oct 2, 2026
Leak-site listing date
Threat group
Ransomhouse
157 victims listed
Country
Indonesia
#27 most targeted
Sector
Energy & Utilities

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Ransomhouse. Figures and technique mappings are quoted from the source data, not inferred.

PT Indo Tambangraya Megah was listed on Ransomhouse's dark web leak site on 2 October 2026, a leading coal producer in Asia that focuses on mining services and has a strong commitment to sustainability and community collaboration.

About PT Indo Tambangraya Megah

PT Indo Tambangraya Megah, founded in 1987, is a leading coal producer based in Asia. The company focuses on maintaining high standards in corporate governance, environmental practices, and workplace safety. PT Indo Tambangraya Megah operates with a commitment to collaboration with local communities and stakeholders. The company has established a diverse customer base in the mining industry and offers various services related to coal production.

Source record: ransomware.live

About the Ransomhouse group

RansomHouse is a double-extortion RaaS operation active since late 2021, attributed to the threat actor "Jolly Scorpius," targeting over 120 organizations across healthcare, finance, transportation, and government, recently upgrading to a multi-layered dual-key encryption architecture. Ransomhouse has listed 212 victims since June 2021.

Incident analysis

PT Indo Tambangraya Megah was listed by Ransomhouse ransomware, a group with 157 victims recorded in this database. The listing appeared on the group's leak site on October 2, 2026.

PT Indo Tambangraya Megah is based in Indonesia and operates in the Energy & Utilities sector. Indonesia ranks #27 worldwide for ransomware disclosures, with 128 victims in this database.

Sector context. Organisations in this sector hold valuable data and operational systems that ransomware groups seek to exploit for financial gain through encryption and data exfiltration.

Ransomhouse typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was PT Indo Tambangraya Megah attacked by ransomware?

Yes. PT Indo Tambangraya Megah was listed as a victim of the Ransomhouse ransomware group on October 2, 2026. The organisation is based in Indonesia and operates in the Energy & Utilities sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked PT Indo Tambangraya Megah?

PT Indo Tambangraya Megah was attacked by Ransomhouse ransomware. Ransomhouse is one of the most active ransomware groups, having claimed 157 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the PT Indo Tambangraya Megah ransomware attack occur?

The ransomware attack on PT Indo Tambangraya Megah was disclosed on October 2, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the PT Indo Tambangraya Megah ransomware attack?

The specific data stolen from PT Indo Tambangraya Megah has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Energy & Utilities organisation, PT Indo Tambangraya Megah likely held sensitive business data, client information, and operational records.

How can organisations protect against Ransomhouse attacks?

To defend against Ransomhouse and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.