Incident Score: Analysis & Impact (MIC1775773455)
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 Microsoft Security Response Center's Cyber Attack 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 Microsoft Security Response Center 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 Microsoft Security Response Center breach identified under incident ID MIC1775773455.
The analysis begins with a detailed overview of Microsoft Security Response Center's information like the linkedin page: https://www.linkedin.com/company/microsoft-security-response-center, the number of followers: 54723, the industry type: Computer and Network Security and the number of employees: None 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 574 and after the incident was 554 with a difference of -20 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 Microsoft Security Response Center and their customers.
On 01 November 2023, a cybersecurity incident called "New Phishing-as-a-Service Platform 'VENOM' Targets C-Suite Executives" came to light.
A previously undocumented phishing-as-a-service (PhaaS) platform, dubbed VENOM, has been actively targeting high-level executives including CEOs, CFOs, and VPs across multiple industries since at least November 2023.
The disruption is felt across the environment, affecting Microsoft SharePoint and Microsoft login flows, and exposing Credentials, MFA codes and Session tokens.
Formal response steps have not been shared publicly yet.
The case underscores how Ongoing, teams are taking away lessons such as MFA alone is insufficient; FIDO2 authentication, disabling unused device-code flows, and stricter conditional access policies are necessary to mitigate such threats, and recommending next steps like Implement FIDO2 authentication, Disable unused device-code flows and Enforce stricter conditional access policies.
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 Phishing (T1566) with high confidence (95%), supported by evidence indicating highly personalized phishing emails impersonating Microsoft SharePoint, Phishing: Spearphishing Link (T1566.001) with high confidence (90%), supported by evidence indicating qR codes in phishing emails direct victims to credential-harvesting pages, and Phishing: Spearphishing Attachment (T1566.002) with moderate to high confidence (70%), supported by evidence indicating fake email threads, HTML noise to evade detection. Under the Execution tactic, the analysis identified User Execution: Malicious Link (T1204.001) with high confidence (90%), supported by evidence indicating qR codes direct victims to credential-harvesting pages. Under the Credential Access tactic, the analysis identified Adversary-in-the-Middle (T1557) with high confidence (95%), supported by evidence indicating credential-harvesting page proxies Microsoft’s login flow in real time, Adversary-in-the-Middle: LLMNR/NBT-NS Poisoning and SMB Relay (T1557.001) with moderate to high confidence (70%), supported by evidence indicating capturing credentials, MFA codes, and session tokens via AiTM, Brute Force (T1110) with moderate confidence (60%), supported by evidence indicating device-code phishing tactic to approve access for rogue devices, and Input Capture: Web Portal Capture (T1056.003) with high confidence (90%), supported by evidence indicating credential-harvesting page captures credentials and MFA codes. Under the Persistence tactic, the analysis identified Valid Accounts (T1078) with high confidence (90%), supported by evidence indicating establishes persistent access by registering new devices or obtaining tokens and Create Account: Cloud Account (T1136.003) with moderate to high confidence (80%), supported by evidence indicating registering new devices to bypass traditional MFA protections. Under the Defense Evasion tactic, the analysis identified Hide Artifacts: HTML Smuggling (T1564.001) with moderate to high confidence (80%), supported by evidence indicating hTML noise and Unicode-rendered QR codes to evade detection, Obfuscated Files or Information (T1027) with moderate to high confidence (85%), supported by evidence indicating double Base64-encoded email addresses in URL fragments, and Impair Defenses: Disable or Modify Tools (T1562.001) with moderate to high confidence (70%), supported by evidence indicating filtering landing page screens for security researchers and sandboxes. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating capturing credentials, MFA codes, and session tokens via AiTM. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Microsoft Security Response Center Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/microsoft-security-response-center/incident/MIC1775773455
- Microsoft Security Response Center CyberSecurity Rating page: https://www.rankiteo.com/company/microsoft-security-response-center
- Microsoft Security Response Center Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/mic1775773455-microsoft-cyber-attack-april-2026/
- Microsoft Security Response Center CyberSecurity Score History: https://www.rankiteo.com/company/microsoft-security-response-center/history
- Microsoft Security Response Center CyberSecurity Incident Source: https://www.bleepingcomputer.com/news/security/new-venom-phishing-attacks-steal-senior-executives-microsoft-logins/
- 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