Asahi Group Holdings Breach Incident Score: Analysis & Impact (ASA5662456112725)

In this Rankiteo incident briefing, we review the Asahi Group Holdings breach identified under incident ID ASA5662456112725.

The analysis begins with a detailed overview of Asahi Group Holdings's information like the linkedin page: https://www.linkedin.com/company/asahigroup-holdings, the number of followers: 202985, the industry type: Food and Beverage Services and the number of employees: 1129 employees

After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 636 and after the incident was 486 with a difference of -150 which is could be a good indicator of the severity and impact of the incident.

In the next step of the video, we will analyze in more details the incident and the impact it had on Asahi Group Holdings and their customers.

On 29 September 2025, Asahi Group Holdings disclosed ransomware issues under the banner "Ransomware Attack on Asahi Group Holdings".

Japanese beer giant Asahi Group Holdings, maker of Asahi Super Dry, was hit by a ransomware attack in late September 2025.

The disruption is felt across the environment, affecting financial reporting systems and supply chain/logistics systems.

In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like system isolation and restoration efforts, and began remediation that includes system recovery in progress, while recovery efforts such as phased resumption of product shipments continue, and stakeholders are being briefed through public statement by CEO Atsushi Katsuki and apology for inconvenience.

The case underscores how ongoing, with advisories going out to stakeholders covering delay in financial results announcement and phased resumption of shipments.

Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.

The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.

Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Exploit Public-Facing Application (T1190) with moderate to high confidence (70%), supported by evidence indicating ransomware attack disrupted financial reporting systems and supply chain/logistics systems and Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating high_value_targets include financial systems and supply chain systems (implies potential credential abuse). Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (100%), with evidence including data encryption such as true, and ransomware attack caused operational disruptions and Service Stop (T1489) with high confidence (95%), supported by evidence indicating delayed financial results, disrupted product shipments, system recovery in progress. Under the Defense Evasion tactic, the analysis identified Indicator Removal: File Deletion (T1070.004) with moderate to high confidence (70%), supported by evidence indicating system isolation and restoration efforts imply attacker may have deleted/tampered with logs or backups. Under the Lateral Movement tactic, the analysis identified Remote Services: Remote Desktop Protocol (T1021.001) with moderate confidence (60%), supported by evidence indicating targeting of financial systems and supply chain systems suggests internal movement (common RDP abuse in ransomware). Under the Command and Control tactic, the analysis identified Application Layer Protocol: Web Protocols (T1071.001) with moderate to high confidence (70%), supported by evidence indicating qilin ransomware typically uses HTTP/HTTPS for C2 (implied by Russia-based group). Under the Exfiltration tactic, the analysis identified Exfiltration Over Alternative Protocol: Exfiltration Over Unencrypted/Obfuscated Non-C2 Protocol (T1048.003) with moderate confidence (50%), supported by evidence indicating data exfiltration such as null (unconfirmed but common in Qilin attacks; high_value_targets suggest potential data theft). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.