Incident Score: Analysis & Impact (KORKORSCH1767123879)
The details regarding individual company incidents & reports gives you full view from every side.
Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Korean Air's Ransomware and lateral movement inside company's environment.
- Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
- How Rankiteo’s incident engine converts technical details into a normalized incident score.
- How this cyber incident impacts Korean Air Rankiteo cyber scoring and cyber rating.
- Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.
Full Incident Analysis Transcript
In this Rankiteo incident briefing, we review the Korean Air breach identified under incident ID KORKORSCH1767123879.
The analysis begins with a detailed overview of Korean Air's information like the linkedin page: https://www.linkedin.com/company/korean-air, the number of followers: 65163, the industry type: Airlines and Aviation and the number of employees: 3404 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 770 and after the incident was 644 with a difference of -126 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 Korean Air and their customers.
On 21 November 2025, Korean Air disclosed Data Breach, Ransomware issues under the banner "Korean Air Data Breach via KC&D Supply-Chain Attack".
Korean Air lost sensitive data on ~30,000 employees in a supply-chain breach involving Korean Air Catering & Duty-Free (KC&D).
The disruption is felt across the environment, affecting Oracle E-Business Suite (EBS), and exposing 500 GB of archives, with nearly 30,000 records at risk.
Formal response steps have not been shared publicly yet.
Overall, the incident is a reminder of why proactive monitoring and strong governance matter.
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.
MITRE ATT&CK® Correlation Analysis
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 Supply Chain Compromise (T1195) with high confidence (95%), with evidence including supply-chain attack on its catering and duty-free subsidiary, and exploitation of Oracle E-Business Suite (EBS) vulnerability (CVE-2025-61882) and Exploit Public-Facing Application (T1190) with high confidence (90%), supported by evidence indicating exploited a critical vulnerability (CVE-2025-61882) in Oracle E-Business Suite (EBS). Under the Credential Access tactic, the analysis identified Unsecured Credentials: Network Device Configuration (T1552.008) with moderate to high confidence (70%), supported by evidence indicating exposed full names and bank account numbers (30,000 employees). Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), with evidence including cl0p ransomware group... stole and leaked nearly 500 GB of archives, and data exfiltration such as Yes. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate confidence (50%), with evidence including type such as Ransomware, and ransomware strain such as Cl0p and Financial Theft (T1657) with moderate to high confidence (80%), supported by evidence indicating exposed... bank account numbers, heightening risks of identity theft and financial fraud. Under the Defense Evasion tactic, the analysis identified Valid Accounts (T1078) with moderate confidence (60%), with evidence including supply-chain attack on... subsidiary (KC&D), and exploitation of Oracle E-Business Suite (EBS). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Korean Air Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/korean-air/incident/KORKORSCH1767123879
- Korean Air CyberSecurity Rating page: https://www.rankiteo.com/company/korean-air
- Korean Air Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/korkorsch1767123879-ransomware-november-2025/
- Korean Air CyberSecurity Score History: https://www.rankiteo.com/company/korean-air/history
- Korean Air CyberSecurity Incident Source: https://www.techradar.com/pro/security/thousands-of-employees-exposed-as-korean-air-compromised-in-oracle-breach
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/Images/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf