Cyber Threat Intelligence
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Ransomware Victim Public Sector

narit.or.th

Ransomware attack by Apt73 · Disclosed May 21, 2026 · 🇹🇭 Thailand

narit.or.th

Date Disclosed
May 21, 2026
2026
Threat Group
Apt73
158 total victims
Country
🇹🇭 Thailand
Industry
Public Sector

ThreatAI Analysis

Compiled from this incident record and the threat intelligence profile for Apt73. Figures and technique mappings are quoted from the source data, not inferred.

About the Apt73 group

A new ransomware group is said to have emerged in mid-April 2024, under the name 'APT73.' It's worth noting that the group reportedly self-proclaimed as an APT, which stands for 'Advanced Persistent Threat' in the cybersecurity field. According to research, much of the available information about the aforementioned group came from another ransomware group known as LockBit. Source: https://github.com/crocodyli/ThreatActors-TTPs Apt73 has listed 157 victims since April 2024.

Incident Analysis

narit.or.th was targeted by Apt73 ransomware, one of the most active ransomware groups in our database with 158 confirmed victims globally. The attack was disclosed on May 21, 2026, when narit.or.th appeared on the group's dark web leak site.

narit.or.th is based in Thailand , operating in the Public Sector sector. Thailand ranks #15 globally for ransomware attacks, with 176 victims in our 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.

Apt73 typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Sep 5, 2026 16:00 UTC.

Frequently Asked Questions

Was narit.or.th attacked by ransomware?

Yes. narit.or.th was listed as a victim of the Apt73 ransomware group on May 21, 2026. The organisation is based in Thailand and operates in the Public Sector sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked narit.or.th?

narit.or.th was attacked by Apt73 ransomware. Apt73 is one of the most active ransomware groups, having claimed 158 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the narit.or.th ransomware attack occur?

The ransomware attack on narit.or.th was disclosed on May 21, 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 narit.or.th ransomware attack?

The specific data stolen from narit.or.th 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 Public Sector organisation, narit.or.th likely held sensitive business data, client information, and operational records.

How can organisations protect against Apt73 attacks?

To defend against Apt73 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.