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Analyze » Cleveland County Sheriff's Office » CLE1764698690

Incident Score: Analysis & Impact (CLE1764698690)

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

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-130
Company Score Before Incident761 / 1000
Company Score After Incident631 / 1000
Company LinkView Cleveland County Sheriff's Office Profile
INCIDENT NUMBERCLE1764698690
Type of Cyber IncidentRansomware
ATTACK VECTORNA
DATA EXPOSEDYes
INCIDENT DATE01/12/2025
STATUSOngoing

Key Highlights From The Incident Analysis

  • Timeline of Cleveland County Sheriff's Office'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 Cleveland County Sheriff's Office 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 Cleveland County Sheriff's Office breach identified under incident ID CLE1764698690.

The analysis begins with a detailed overview of Cleveland County Sheriff's Office's information like the linkedin page: https://www.linkedin.com/company/cleveland-county-sheriff-office, the number of followers: 647, the industry type: Law Enforcement and the number of employees: 135 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 761 and after the incident was 631 with a difference of -130 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 Cleveland County Sheriff's Office and their customers.

On 20 November 2025, Cleveland County Sheriff’s Office disclosed Ransomware issues under the banner "Ransomware Attack on Cleveland County Sheriff’s Office".

Ransomware gang Rhysida took credit for a cyber attack on the Cleveland County Sheriff’s Office in Oklahoma.

The disruption is felt across the environment, affecting Internal computer system, and exposing Yes.

In response, while recovery efforts such as Actively working to resolve the issue continue, and stakeholders are being briefed through Public disclosure via Facebook post (since removed).

The case underscores how Ongoing.

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 (60%), supported by evidence indicating attack impacted parts of its internal computer system and External Remote Services (T1133) with moderate confidence (50%), supported by evidence indicating internal computer system affected; no details on attack vector. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating ransomware attack; likely required user interaction. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (90%), supported by evidence indicating ransomware gang Rhysida took credit for the attack and Defacement: Internal Defacement (T1491.001) with moderate to high confidence (70%), supported by evidence indicating internal computer system impacted by ransomware. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating rhysida claims to have stolen data; posted sample documents and Automated Exfiltration (T1020) with moderate to high confidence (80%), supported by evidence indicating data exfiltration confirmed; includes SS cards, medical records. Under the Credential Access tactic, the analysis identified Unsecured Credentials: Credentials In Files (T1552.001) with moderate confidence (60%), supported by evidence indicating exfiltrated data includes criminal background checks, court filings. Under the Defense Evasion tactic, the analysis identified Obfuscated Files or Information (T1027) with moderate to high confidence (70%), supported by evidence indicating ransomware attack; likely used obfuscation to evade detection and Impair Defenses: Disable or Modify Tools (T1562.001) with moderate confidence (60%), supported by evidence indicating internal computer system impacted; possible defense impairment. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Sources & References