Incident Score: Analysis & Impact (CITGUIKONARC1783031139)
The details regarding individual company incidents & reports gives you full view from every side.
Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Arctic Wolf's Vulnerability 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 CITGUIKONARC1783031139.
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 502 and after the incident was 498 with a difference of -4 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, "Anubis Ransomware Exploits Citrix Bleed 2 in Targeted Attacks Across Critical Sectors", has drawn attention.
Threat actors linked to the Anubis ransomware-as-a-service (RaaS) operation are actively exploiting CVE-2025-5777 (Citrix Bleed 2), a critical vulnerability in Citrix NetScaler ADC and Gateway, to gain initial access to victim networks.
The disruption is felt across the environment, affecting Citrix NetScaler ADC and Gateway, VPN systems (Cisco AnyConnect) and Windows systems, and exposing True.
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 high confidence (95%), with evidence including exploiting CVE-2025-5777 (Citrix Bleed 2), and critical vulnerability in Citrix NetScaler ADC and Gateway, Valid Accounts: Cloud Accounts (T1078.004) with high confidence (90%), supported by evidence indicating stolen VPN credentials...to breach networks via Cisco AnyConnect VPNs, External Remote Services (T1133) with moderate to high confidence (85%), supported by evidence indicating stolen VPN credentials...via hosting providers like AS20473 (The Constant Company), and Phishing: Spearphishing Attachment (T1566.001) with moderate confidence (50%), supported by evidence indicating info-stealer malware to breach networks. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (80%), with evidence including deploy RMM tools for persistence, and go-based backdoor for remote command execution and Command and Scripting Interpreter: Windows Command Shell (T1059.003) with moderate to high confidence (75%), supported by evidence indicating move laterally using RDP and PsExec. Under the Persistence tactic, the analysis identified External Remote Services (T1133) with high confidence (90%), supported by evidence indicating legitimate RMM tools...to blend in with normal IT activity while maintaining persistent control and Valid Accounts: Cloud Accounts (T1078.004) with moderate to high confidence (85%), supported by evidence indicating stolen VPN credentials...via hosting providers. Under the Privilege Escalation tactic, the analysis identified Exploitation for Privilege Escalation (T1068) with high confidence (90%), supported by evidence indicating zero-day vulnerability in ktapi.sys...to bypass Windows security protections and Abuse Elevation Control Mechanism: Bypass User Account Control (T1548.002) with moderate to high confidence (70%), supported by evidence indicating weaponized a zero-day vulnerability in ktapi.sys. Under the Defense Evasion tactic, the analysis identified Indicator Removal: Clear Windows Event Logs (T1070.001) with moderate to high confidence (85%), supported by evidence indicating manipulate logs to hinder forensic analysis, Impair Defenses: Disable or Modify Tools (T1562.001) with high confidence (90%), supported by evidence indicating disable security defenses, including Windows Defender and Sophos, Masquerading: Match Legitimate Name or Location (T1036.005) with moderate to high confidence (80%), supported by evidence indicating legitimate RMM tools...to blend in with normal IT activity, and Data Destruction (T1485) with moderate to high confidence (75%), supported by evidence indicating irreversible data-wiping feature that reduces files to 0 KB. Under the Credential Access tactic, the analysis identified Credentials from Password Stores (T1555) with moderate to high confidence (80%), supported by evidence indicating stolen VPN credentials potentially sourced from...info-stealer malware and Brute Force: Password Spraying (T1110.003) with moderate to high confidence (70%), supported by evidence indicating credential stuffing...to breach networks. Under the Discovery tactic, the analysis identified Account Discovery: Domain Account (T1087.002) with moderate to high confidence (70%), supported by evidence indicating collects system data via Go-based backdoor and File and Directory Discovery (T1083) with moderate confidence (65%), supported by evidence indicating exfiltrate data via S3 Browser, rclone, s5cmd. Under the Lateral Movement tactic, the analysis identified Remote Services: Remote Desktop Protocol (T1021.001) with high confidence (90%), supported by evidence indicating move laterally using RDP and PsExec and Lateral Tool Transfer (T1570) with moderate to high confidence (80%), supported by evidence indicating deploy RMM tools for persistence. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (85%), supported by evidence indicating collects system data via Go-based backdoor and Data from Cloud Storage (T1530) with moderate to high confidence (75%), supported by evidence indicating exfiltrate data via S3 Browser, rclone, s5cmd. Under the Command and Control tactic, the analysis identified Ingress Tool Transfer (T1105) with moderate to high confidence (85%), supported by evidence indicating deploy RMM tools...ScreenConnect, Zoho Assist, MeshAgent, Application Layer Protocol: Web Protocols (T1071.001) with moderate to high confidence (80%), supported by evidence indicating exfiltrates it to 81.177.215.15 such as 9443, Protocol Tunneling (T1572) with moderate to high confidence (75%), supported by evidence indicating cloudflare Tunnels...for data exfiltration, and Proxy: External Proxy (T1090.002) with moderate to high confidence (70%), supported by evidence indicating establish a SOCKS proxy for network pivoting. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating exfiltrate data via Cloudflare Tunnels, S3 Browser, rclone, s5cmd and Exfiltration Over Web Service: Exfiltration to Cloud Storage (T1567.002) with moderate to high confidence (85%), supported by evidence indicating exfiltrate data via S3 Browser, rclone, s5cmd. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (95%), supported by evidence indicating data encryption...Anubis ransomware-as-a-service (RaaS) operation, Data Destruction (T1485) with high confidence (90%), supported by evidence indicating irreversible data-wiping feature that reduces files to 0 KB regardless of ransom payment, and Inhibit System Recovery (T1490) with moderate to high confidence (75%), supported by evidence indicating disable security defenses, including Windows Defender and Sophos. 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/CITGUIKONARC1783031139
- Arctic Wolf CyberSecurity Rating page: https://www.rankiteo.com/company/arcticwolf
- Arctic Wolf Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/citguikonarc1783031139-citrix-kontron-the-gentlemen-raas-victims-anubis-ransomware-victims-vulnerability-june-2026/
- Arctic Wolf CyberSecurity Score History: https://www.rankiteo.com/company/arcticwolf/history
- Arctic Wolf CyberSecurity Incident Source: https://thehackernews.com/2026/07/ransomware-groups-turn-to-citrix-bleed.html
- 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