Belk Breach Incident Score: Analysis & Impact (BELMAR1770616665)

In this Rankiteo incident briefing, we review the Belk breach identified under incident ID BELMAR1770616665.

The analysis begins with a detailed overview of Belk's information like the linkedin page: https://www.linkedin.com/company/belk, the number of followers: 121054, the industry type: Retail and the number of employees: 12732 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 791 and after the incident was 659 with a difference of -132 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 Belk and their customers.

Belk recently reported "DragonForce Ransomware Group Strikes US Retailer Belk in Major Cyberattack", a noteworthy cybersecurity incident.

The US department store chain Belk has fallen victim to a cyberattack by the DragonForce ransomware group, involving unauthorized access to corporate systems and sensitive customer data.

The disruption is felt across the environment, affecting Corporate systems, mobile app infrastructure, e-commerce services (implied from M&S impact), and exposing 156GB of company data, including backups and employee profiles, with nearly Up to 1 million users (estimated) records at risk.

In response, and stakeholders are being briefed through Filing with New Hampshire Attorney General’s Office.

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 Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating unauthorized access to corporate systems and Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating mobile app infrastructure data exposed. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate confidence (60%), supported by evidence indicating dragonForce ransomware group strikes. Under the Persistence tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating unauthorized access to corporate systems. Under the Privilege Escalation tactic, the analysis identified Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating access to employee records and backups. Under the Defense Evasion tactic, the analysis identified Obfuscated Files or Information (T1027) with moderate to high confidence (70%), supported by evidence indicating dragonForce ransomware strain and Execution Guardrails (T1480) with moderate confidence (50%), supported by evidence indicating destructive measures after ransom refusal. Under the Credential Access tactic, the analysis identified OS Credential Dumping (T1003) with moderate confidence (60%), supported by evidence indicating employee records and backups exfiltrated and Unsecured Credentials: Credentials In Files (T1552.001) with moderate confidence (50%), supported by evidence indicating mobile app infrastructure data exposed. Under the Discovery tactic, the analysis identified Account Discovery (T1087) with moderate confidence (60%), supported by evidence indicating employee records and customer data accessed and File and Directory Discovery (T1083) with moderate to high confidence (70%), supported by evidence indicating 156GB of company data exfiltrated. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating names, dates of birth, addresses, order histories compromised and Data from Information Repositories (T1213) with moderate to high confidence (70%), supported by evidence indicating store coupons, employee records, mobile app data. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating 156GB of data exfiltrated by DragonForce and Exfiltration Over Web Service (T1567) with moderate confidence (60%), supported by evidence indicating group operates dark web blog for data leaks. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (90%), supported by evidence indicating dragonForce ransomware strain, data encryption confirmed, Data Destruction (T1485) with moderate to high confidence (70%), supported by evidence indicating destructive measures after ransom refusal, and Defacement (T1491) with moderate confidence (50%), supported by evidence indicating group lists victims on dark web blog. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.