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Analyze » Serasa Experian » SER1775860315

Incident Score: Analysis & Impact (SER1775860315)

The details regarding individual company incidents & reports gives you full view from every side.

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-85
Company Score Before Incident786 / 1000
Company Score After Incident701 / 1000
Company LinkView Serasa Experian Profile
INCIDENT NUMBERSER1775860315
Type of Cyber IncidentBreach
ATTACK VECTORNA
DATA EXPOSED1.8 TB of sensitive data
INCIDENT DATE31/12/2020
STATUSpublished

Key Highlights From The Incident Analysis

  • Timeline of Serasa Experian's Breach 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 Serasa Experian 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 Serasa Experian breach identified under incident ID SER1775860315.

The analysis begins with a detailed overview of Serasa Experian's information like the linkedin page: https://www.linkedin.com/company/serasaexperian, the number of followers: 743211, the industry type: Information Services and the number of employees: 7030 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 786 and after the incident was 701 with a difference of -85 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 Serasa Experian and their customers.

Serasa Experian recently reported "Massive Data Breach Exposes Personal Records of 223 Million Brazilians via Serasa Experian", a noteworthy cybersecurity incident.

A threat actor has claimed to steal 1.8 TB of sensitive data from Serasa Experian, the Brazilian arm of global credit risk firm Experian, exposing records belonging to 223 million individuals.

The disruption is felt across the environment, and exposing 1.8 TB of sensitive data, with nearly 223 million individuals 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 Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating threat actor has claimed to steal 1.8 TB of sensitive data from Serasa Experian and Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating breach may encompass data from internal systems (credit risk firm). Under the Credential Access tactic, the analysis identified Unsecured Credentials (T1552) with moderate to high confidence (70%), supported by evidence indicating cPF numbers (Brazil’s equivalent of Social Security numbers) exposed and OS Credential Dumping (T1003) with moderate confidence (50%), supported by evidence indicating 1.8 TB of sensitive data includes personal and financial records. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating dataset includes CPF numbers, full names, birth dates, emails, phone numbers and Data from Information Repositories (T1213) with moderate to high confidence (80%), supported by evidence indicating serasa Experian is a credit risk firm with vast troves of personal data. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating 1.8 TB of sensitive data stolen from Serasa Experian and Exfiltration Over Web Service (T1567) with moderate confidence (60%), supported by evidence indicating threat actor claimed to steal data; no specific exfiltration method disclosed. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating no details on data destruction; focus on exfiltration and Stored Data Manipulation (T1565.001) with lower confidence (40%), supported by evidence indicating potential for fraud using exposed CPF numbers and personal data. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Initial Access
Exploit Public-Facing Application (50%)
Valid Accounts (60%)
Credential Access
Unsecured Credentials (70%)
OS Credential Dumping (50%)
Collection
Data from Local System (90%)
Data from Information Repositories (80%)
Exfiltration
Exfiltration Over C2 Channel (80%)
Exfiltration Over Web Service (60%)
Impact
Data Destruction (30%)
Stored Data Manipulation (40%)

Sources & References