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Analyze » Gesa Credit Union » GES1764896431

Incident Score: Analysis & Impact (GES1764896431)

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

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-124
Company Score Before Incident694 / 1000
Company Score After Incident570 / 1000
Company LinkView Gesa Credit Union Profile
INCIDENT NUMBERGES1764896431
Type of Cyber IncidentRansomware
ATTACK VECTORThird-party vendor compromise
DATA EXPOSEDSensitive personal identifiable information
INCIDENT DATE03/12/2025
STATUSOngoing

Key Highlights From The Incident Analysis

  • Timeline of Gesa Credit Union'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 Gesa Credit Union 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 Gesa Credit Union breach identified under incident ID GES1764896431.

The analysis begins with a detailed overview of Gesa Credit Union's information like the linkedin page: https://www.linkedin.com/company/gesa-credit-union, the number of followers: 7304, the industry type: Financial Services and the number of employees: 761 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 694 and after the incident was 570 with a difference of -124 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 Gesa Credit Union and their customers.

On 14 August 2023, Gesa disclosed Data Breach, Ransomware issues under the banner "Gesa Data Breach via Third-Party Vendor (Marquis Software Solutions)".

Gesa reported a data breach where sensitive personal identifiable information may have been compromised due to a ransomware attack on its third-party vendor, Marquis Software Solutions.

The disruption is felt across the environment, affecting Marquis Software Solutions network, and exposing Sensitive personal identifiable information.

In response, and stakeholders are being briefed through Data breach notification letters mailed to impacted individuals.

The case underscores how Ongoing, and recommending next steps like Providing complimentary credit monitoring services to affected individuals, with advisories going out to stakeholders covering Data breach notification letters with specific types of impacted information.

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 (90%), with evidence including third-party vendor (Marquis Software Solutions) compromise, and attack vector such as Third-party vendor compromise. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate to high confidence (80%), with evidence including ransomware attack detected, and data encryption such as Likely and Data Destruction (T1485) with moderate confidence (50%), supported by evidence indicating ransomware attack may involve data destruction. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), with evidence including data exfiltration such as Possible, and sensitive personal information accessed and acquired. Under the Credential Access tactic, the analysis identified Unsecured Credentials (T1552) with moderate confidence (60%), supported by evidence indicating third-party vendor compromise may involve credential access. Under the Defense Evasion tactic, the analysis identified Obfuscated Files or Information (T1027) with moderate confidence (60%), supported by evidence indicating ransomware attack likely involves obfuscation. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Sources & References