Cloudflare Breach Incident Score: Analysis & Impact (AMACLOCHA1767712395)

In this Rankiteo incident briefing, we review the Cloudflare breach identified under incident ID AMACLOCHA1767712395.

The analysis begins with a detailed overview of Cloudflare's information like the linkedin page: https://www.linkedin.com/company/cloudflare, the number of followers: 1125000, the industry type: Computer and Network Security and the number of employees: 6599 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 671 and after the incident was 632 with a difference of -39 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 Cloudflare and their customers.

Change Healthcare recently reported "Change Healthcare Ransomware Attack", a noteworthy cybersecurity incident.

The Change Healthcare ransomware attack stands as the largest healthcare data breach in US history.

The disruption is felt across the environment, affecting Healthcare transaction processing systems, and exposing Personal and medical data of 190 million individuals, with nearly 190 million records at risk, plus an estimated financial loss of $3.09 billion.

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.

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 confidence (60%), supported by evidence indicating system intrusion (ransomware, vulnerability exploits) caused 53% of all breaches and Supply Chain Compromise (T1195) with moderate confidence (50%), supported by evidence indicating supply chain attacks...exposing 78.3 million records. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating infostealer malware...compiled from prior breaches and Command and Scripting Interpreter (T1059) with moderate confidence (60%), supported by evidence indicating blackCat ransomware...disrupting healthcare. Under the Persistence tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (80%), supported by evidence indicating 16 billion usernames, emails, and passwords...compiled from infostealer malware. Under the Privilege Escalation tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating credential theft...one of the largest credential dumps ever. Under the Defense Evasion tactic, the analysis identified Obfuscated Files or Information (T1027) with moderate to high confidence (70%), supported by evidence indicating blackCat ransomware...data encryption and Impair Defenses: Disable or Modify Tools (T1562.001) with moderate confidence (60%), supported by evidence indicating breaches took longest to detect and contain, averaging 279 days. Under the Credential Access tactic, the analysis identified Credentials from Password Stores (T1555) with high confidence (90%), supported by evidence indicating 16 billion usernames, emails, and passwords...compiled from infostealer malware and Brute Force (T1110) with moderate to high confidence (70%), supported by evidence indicating largest credential dumps ever...from prior breaches. Under the Discovery tactic, the analysis identified Account Discovery (T1087) with moderate to high confidence (70%), supported by evidence indicating exposed PII on nearly every citizen...one of the largest surveillance-related leaks. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating personal and medical data of 190 million individuals exposed and Data from Information Repositories (T1213) with moderate to high confidence (80%), supported by evidence indicating change Healthcare processes 15 billion healthcare transactions each year. Under the Command and Control tactic, the analysis identified Application Layer Protocol (T1071) with moderate to high confidence (70%), supported by evidence indicating blackCat ransomware...disrupting healthcare systems. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating 190 million individuals’ data exposed in Change Healthcare breach and Transfer Data to Cloud Account (T1537) with moderate confidence (60%), supported by evidence indicating misconfigured API in Salesforce led to a third-party breach. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (90%), supported by evidence indicating blackCat ransomware...data encryption, Defacement (T1491) with moderate confidence (50%), supported by evidence indicating operational fallout was severe, with delayed claims totaling $14 billion, and Endpoint Denial of Service (T1499) with moderate to high confidence (70%), supported by evidence indicating disrupted nearly one-third of US patient records. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.