Incident Score: Analysis & Impact (SEN1770818217)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of SentinelOne'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 SentinelOne 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 SentinelOne breach identified under incident ID SEN1770818217.
The analysis begins with a detailed overview of SentinelOne's information like the linkedin page: https://www.linkedin.com/company/sentinelone, the number of followers: 378624, the industry type: Computer and Network Security and the number of employees: 3119 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 748 and after the incident was 643 with a difference of -105 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 SentinelOne and their customers.
On 01 August 2025, a cybersecurity incident called "Cephalus Ransomware Attack" came to light.
Cephalus ransomware has emerged as a sophisticated threat targeting Windows systems through unsecured Remote Desktop Protocol (RDP) access.
The disruption is felt across the environment, affecting Windows systems, and exposing Yes.
In response, and began remediation that includes Enforce MFA on RDP, monitor DLL sideloading, block MEGA cloud abuse, harden Windows Defender.
The case underscores how teams are taking away lessons such as Importance of MFA for RDP, monitoring DLL sideloading, blocking cloud storage abuse, and continuous validation of security controls, and recommending next steps like Enforce MFA on RDP, Monitor DLL sideloading and Block MEGA cloud abuse.
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 Valid Accounts (T1078) with high confidence (90%), supported by evidence indicating attackers exploit stolen RDP credentials...to gain initial access and External Remote Services (T1133) with high confidence (90%), supported by evidence indicating targeting Windows systems through unsecured Remote Desktop Protocol (RDP) access. Under the Execution tactic, the analysis identified Command and Scripting Interpreter: PowerShell (T1059.001) with moderate to high confidence (80%), supported by evidence indicating disabling Windows Defender via PowerShell commands, Boot or Logon Autostart Execution: LSASS Driver (T1547.008) with moderate to high confidence (70%), supported by evidence indicating scheduled tasks for reboot survival, and Process Injection (T1055) with moderate to high confidence (80%), supported by evidence indicating code injection via VirtualAlloc and VirtualProtect. Under the Persistence tactic, the analysis identified Scheduled Task/Job: Scheduled Task (T1053.005) with moderate to high confidence (80%), supported by evidence indicating scheduled tasks for reboot survival. Under the Privilege Escalation tactic, the analysis identified Process Injection (T1055) with moderate to high confidence (70%), supported by evidence indicating code injection via VirtualAlloc and VirtualProtect. Under the Defense Evasion tactic, the analysis identified Impair Defenses: Disable or Modify Tools (T1562.001) with high confidence (90%), supported by evidence indicating disabling Windows Defender via PowerShell commands, registry edits (DisableRealtimeMonitoring), DLL Side-Loading (T1073) with high confidence (90%), supported by evidence indicating dLL sideloading...SentinelBrowserNativeHost.exe to load malicious components, Obfuscated Files or Information (T1027) with moderate to high confidence (80%), supported by evidence indicating generates fake AES keys (e.g., FAKE_AES_KEY_FOR_CONFUSION_ONLY!), Virtualization/Sandbox Evasion (T1497) with moderate to high confidence (70%), supported by evidence indicating gathering system intel using APIs like GetSystemInfo to tailor attacks and evade sandboxes, and Process Injection: Dynamic-link Library Injection (T1055.001) with moderate to high confidence (80%), supported by evidence indicating dLL sideloading via legitimate SentinelOne executable. Under the Credential Access tactic, the analysis identified Valid Accounts (T1078) with high confidence (90%), supported by evidence indicating exploit stolen RDP credentials often due to the absence of MFA. Under the Discovery tactic, the analysis identified System Information Discovery (T1082) with moderate to high confidence (80%), supported by evidence indicating gathering system intel using APIs like GetSystemInfo, RtlGetVersion, File and Directory Discovery (T1083) with moderate to high confidence (70%), supported by evidence indicating enumerating network drives, and Process Discovery (T1057) with moderate to high confidence (70%), supported by evidence indicating toolhelp32Snapshot to tailor attacks. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating stealing and encrypting data before demanding payment. Under the Exfiltration tactic, the analysis identified Exfiltration Over Web Service: Exfiltration to Cloud Storage (T1567.002) with high confidence (90%), supported by evidence indicating exfiltrate data via MEGA cloud storage. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (90%), supported by evidence indicating hybrid encryption, combining AES-256-CTR for file encryption and RSA-1024 and Inhibit System Recovery (T1490) with moderate to high confidence (80%), supported by evidence indicating deleting Volume Shadow Copies. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- SentinelOne Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/sentinelone/incident/SEN1770818217
- SentinelOne CyberSecurity Rating page: https://www.rankiteo.com/company/sentinelone
- SentinelOne Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/sen1770818217-sentinelone-ransomware-july-2025/
- SentinelOne CyberSecurity Score History: https://www.rankiteo.com/company/sentinelone/history
- SentinelOne CyberSecurity Incident Source: https://cyberpress.org/cephalus-hits-exposed-rdp/
- 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