Incident Score: Analysis & Impact (ARC1787834061)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Arctic Wolf'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 Arctic Wolf 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 Arctic Wolf breach identified under incident ID ARC1787834061.
The analysis begins with a detailed overview of Arctic Wolf's information like the linkedin page: https://www.linkedin.com/company/arcticwolf, the number of followers: 151921, the industry type: Computer and Network Security and the number of employees: 3314 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 635 and after the incident was 487 with a difference of -148 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 Arctic Wolf and their customers.
A newly reported cybersecurity incident, "Aurora Ransomware Affiliate Exposed: AI-Assisted Attacks Target 20+ Organizations", has drawn attention.
A Russian-speaking affiliate behind the Aurora ransomware was uncovered after an exposed server revealed months of malicious activity, including the use of an AI coding assistant to refine attacks.
The disruption is felt across the environment, affecting Windows and Linux/ESXi, and exposing True.
In response, and began remediation that includes Monitor Active Directory for credential theft, Disable LLMNR/NBT-NS and Enforce SMB signing.
The case underscores how Ongoing, teams are taking away lessons such as Defenders should monitor Active Directory for credential theft, disable LLMNR/NBT-NS, enforce SMB signing, rotate krbtgt passwords after breaches, and secure virtualization interfaces and certificate templates to mitigate risks, and recommending next steps like Monitor Active Directory for credential theft, Disable LLMNR/NBT-NS and Enforce SMB signing.
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: Domain Accounts (T1078.002) with high confidence (90%), with evidence including aSREPRoasting and Kerberoasting for credential theft, and active Directory Certificate Services exploitation and Exploit Public-Facing Application (T1190) with moderate to high confidence (70%), supported by evidence indicating exposed server revealed months of malicious activity. Under the Execution tactic, the analysis identified Command and Scripting Interpreter: PowerShell (T1059.001) with moderate to high confidence (80%), with evidence including netExec used for network reconnaissance, and aI-assisted attack refinement via Cursor and User Execution: Malicious File (T1204.002) with high confidence (90%), supported by evidence indicating windows variant (sap.exe) and Linux/ESXi locker (encrypt.out) deployed. Under the Persistence tactic, the analysis identified Account Manipulation (T1098) with moderate to high confidence (80%), supported by evidence indicating active Directory Certificate Services abuse for domain-level access and Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder (T1547.001) with moderate confidence (60%), supported by evidence indicating ransomware disabled System Restore and volume shadow copies. Under the Privilege Escalation tactic, the analysis identified Domain Policy Modification: Domain Trust Modification (T1484.002) with high confidence (90%), supported by evidence indicating noPac exploits, NTLM relay attacks (PetitPotam, PrinterBug, DFSCoerce) and Abuse Elevation Control Mechanism: Bypass User Account Control (T1548.002) with moderate to high confidence (70%), supported by evidence indicating active Directory Certificate Services exploitation. Under the Defense Evasion tactic, the analysis identified Valid Accounts: Domain Accounts (T1078.002) with high confidence (90%), supported by evidence indicating aSREPRoasting and Kerberoasting for credential theft, Impair Defenses: Disable or Modify Tools (T1562.001) with high confidence (90%), supported by evidence indicating disabled System Restore, volume shadow copies, and backups, and Obfuscated Files or Information (T1027) with moderate to high confidence (80%), supported by evidence indicating rented SOCKS proxies to obscure origin. Under the Credential Access tactic, the analysis identified Steal or Forge Kerberos Tickets: AS-REP Roasting (T1558.004) with high confidence (95%), supported by evidence indicating aSREPRoasting for credential theft, Steal or Forge Kerberos Tickets: Kerberoasting (T1558.003) with high confidence (95%), supported by evidence indicating kerberoasting for credential theft, and Brute Force: Password Cracking (T1110.002) with moderate to high confidence (80%), supported by evidence indicating credential material found in exposed server. Under the Discovery tactic, the analysis identified Remote System Discovery (T1018) with high confidence (90%), supported by evidence indicating netExec used for network reconnaissance, Account Discovery: Domain Account (T1087.002) with high confidence (90%), supported by evidence indicating bloodHound used for mapping attack paths, and Domain Trust Discovery (T1482) with moderate to high confidence (80%), supported by evidence indicating bloodHound and Active Directory Certificate Services exploitation. Under the Lateral Movement tactic, the analysis identified Exploitation of Remote Services (T1210) with high confidence (90%), supported by evidence indicating nTLM relay attacks (PetitPotam, PrinterBug, DFSCoerce) and Use Alternate Authentication Material: Pass the Ticket (T1550.003) with moderate to high confidence (80%), supported by evidence indicating kerberoasting and ASREPRoasting. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating data exfiltration confirmed via Tor leak site. Under the Command and Control tactic, the analysis identified Proxy: External Proxy (T1090.002) with high confidence (90%), supported by evidence indicating rented SOCKS proxies to obscure origin and Ingress Tool Transfer (T1105) with moderate to high confidence (80%), supported by evidence indicating ransomware deployed via public Cloudflare R2 bucket. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating data exfiltration confirmed via Tor leak site and Exfiltration Over Web Service: Exfiltration to Cloud Storage (T1567.002) with moderate to high confidence (70%), supported by evidence indicating public Cloudflare R2 bucket used for deployment. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (100%), supported by evidence indicating aurora ransomware encrypted files on Windows and Linux/ESXi systems, Inhibit System Recovery (T1490) with high confidence (95%), supported by evidence indicating disabled System Restore, volume shadow copies, and backups, and Service Stop (T1489) with high confidence (90%), supported by evidence indicating killed running VMs on ESXi servers. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Arctic Wolf Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/arcticwolf/incident/ARC1787834061
- Arctic Wolf CyberSecurity Rating page: https://www.rankiteo.com/company/arcticwolf
- Arctic Wolf Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/arc1787834061-aurora-ransomware-affiliate-victims-ransomware-april-2026/
- Arctic Wolf CyberSecurity Score History: https://www.rankiteo.com/company/arcticwolf/history
- Arctic Wolf CyberSecurity Incident Source: https://cybersecuritynews.com/ransomware-hacker-uses-ai/
- 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