Incident Score: Analysis & Impact (WOR1770746319)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Sermo'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 Sermo 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 Sermo breach identified under incident ID WOR1770746319.
The analysis begins with a detailed overview of Sermo's information like the linkedin page: https://www.linkedin.com/company/worldone, the number of followers: 15141, the industry type: Software Development and the number of employees: 637 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 756 and after the incident was 620 with a difference of -136 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 Sermo and their customers.
On 10 April 2024, Sermo disclosed Ransomware Attack issues under the banner "Sermo Data Breach Exposes 2,674 Individuals to SSN Leak in March 2024 Ransomware Attack".
Sermo, a social network for physicians, confirmed a March 2024 data breach affecting 2,674 individuals after their Social Security numbers were exposed.
The disruption is felt across the environment, and exposing 700 GB, with nearly 2,674 individuals records at risk.
In response, and began remediation that includes 12 months of free credit monitoring and identity theft restoration, and stakeholders are being briefed through Breach notice disclosure.
The case underscores how Ongoing, teams are taking away lessons such as Persistent ransomware threats to healthcare infrastructure and patient privacy; delays in data breach disclosure due to unstable threat actor infrastructure, and recommending next steps like Enhanced monitoring, network segmentation, and proactive incident response planning to mitigate ransomware risks, with advisories going out to stakeholders covering 12 months of free credit monitoring and identity theft restoration through Kroll.
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 Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating power outage at its Denmark data center on April 10, 2024 and Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating unauthorized access occurred between March 19 and April 10, 2024. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (80%), supported by evidence indicating ransomware attack identified after power outage. Under the Persistence tactic, the analysis identified Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating unauthorized access occurred over multiple days. Under the Privilege Escalation tactic, the analysis identified Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating access to sensitive SSN and PII data. Under the Defense Evasion tactic, the analysis identified Execution Guardrails (T1480) with moderate confidence (50%), supported by evidence indicating black Basta’s site was slow and unstable and Obfuscated Files or Information (T1027) with moderate to high confidence (70%), supported by evidence indicating ransomware encryption of systems. Under the Credential Access tactic, the analysis identified OS Credential Dumping (T1003) with moderate confidence (60%), supported by evidence indicating social Security numbers and PII exposed. Under the Discovery tactic, the analysis identified File and Directory Discovery (T1083) with moderate to high confidence (70%), supported by evidence indicating 700 GB of data stolen. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating 700 GB of data exfiltrated and Data from Information Repositories (T1213) with moderate to high confidence (70%), supported by evidence indicating medical discussions, drug ratings, and paid surveys compromised. Under the Command and Control tactic, the analysis identified Application Layer Protocol (T1071) with moderate confidence (60%), supported by evidence indicating black Basta posted stolen data on its leak site. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating 700 GB of data stolen and posted on leak site. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (90%), supported by evidence indicating ransomware encryption of systems and Data Destruction (T1485) with moderate confidence (50%), supported by evidence indicating disrupted data center operations. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Sermo Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/worldone/incident/WOR1770746319
- Sermo CyberSecurity Rating page: https://www.rankiteo.com/company/worldone
- Sermo Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/wor1770746319-sermo-ransomware-march-2024/
- Sermo CyberSecurity Score History: https://www.rankiteo.com/company/worldone/history
- Sermo CyberSecurity Incident Source: https://www.comparitech.com/news/social-network-for-doctors-sermo-breached-by-ransomware-attack/
- 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