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Analyze » Microsoft Security Response Center » MIC1773980784

Incident Score: Analysis & Impact (MIC1773980784)

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

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-4
Company Score Before Incident613 / 1000
Company Score After Incident609 / 1000
Company LinkView Microsoft Security Response Center Profile
INCIDENT NUMBERMIC1773980784
Type of Cyber IncidentVulnerability
ATTACK VECTORRemote Code Execution
DATA EXPOSEDEmails, sensitive documents
INCIDENT DATE15/03/2026
STATUSOngoing

Key Highlights From The Incident Analysis

  • Timeline of Microsoft Security Response Center'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 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 MIC1773980784.

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: 75070, 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 613 and after the incident was 609 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 Microsoft Security Response Center and their customers.

On 13 February 2024, Microsoft Exchange Server Users disclosed Zero-Day Exploit issues under the banner "Critical Zero-Day Exploit in Progress: Microsoft Confirms Active Attacks on Exchange Servers".

Microsoft has issued an urgent warning about a zero-day vulnerability (CVE-2024-21410) actively exploited in targeted attacks against on-premises Microsoft Exchange Servers.

The disruption is felt across the environment, affecting Microsoft Exchange Servers (2013, 2016, 2019), and exposing Emails, sensitive documents.

In response, moved swiftly to contain the threat with measures like Patching (February 2024 Patch Tuesday updates), and began remediation that includes Immediate patching of Exchange Servers, and stakeholders are being briefed through Microsoft advisory urging immediate patching.

The case underscores how Ongoing, and recommending next steps like Immediate patching of Exchange Servers, prioritize hybrid environments, monitor for lateral movement, with advisories going out to stakeholders covering Microsoft advisory urging immediate patching.

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 (90%), supported by evidence indicating zero-day vulnerability (CVE-2024-21410) actively exploited against on-premises Microsoft Exchange Servers. Under the Privilege Escalation tactic, the analysis identified Exploitation for Privilege Escalation (T1068) with high confidence (95%), supported by evidence indicating flaw allows threat actors to gain SYSTEM-level access, the highest privilege level on compromised servers. Under the Persistence tactic, the analysis identified Server Software Component: Web Shell (T1505.003) with moderate to high confidence (70%), supported by evidence indicating microsoft noted the group’s use of custom malware to maintain persistence. Under the Lateral Movement tactic, the analysis identified Exploitation of Remote Services (T1210) with moderate to high confidence (80%), supported by evidence indicating lateral movement within networks post-compromise. Under the Collection tactic, the analysis identified Email Collection: Remote Email Collection (T1114.002) with high confidence (90%), supported by evidence indicating attackers exfiltrating emails and sensitive documents. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (85%), supported by evidence indicating data exfiltration confirmed, espionage-driven campaign. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate confidence (60%), supported by evidence indicating potential ransomware deployment post-compromise. Under the Defense Evasion tactic, the analysis identified Exploitation for Defense Evasion (T1211) with moderate to high confidence (80%), supported by evidence indicating vulnerability enables attackers to bypass authentication and Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating sYSTEM-level access implies abuse of high-privilege accounts. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Initial Access
Exploit Public-Facing Application (90%)
Privilege Escalation
Exploitation for Privilege Escalation (95%)
Persistence
Server Software Component: Web Shell (70%)
Lateral Movement
Exploitation of Remote Services (80%)
Collection
Email Collection: Remote Email Collection (90%)
Exfiltration
Exfiltration Over C2 Channel (85%)
Impact
Data Encrypted for Impact (60%)
Defense Evasion
Exploitation for Defense Evasion (80%)
Valid Accounts (70%)

Sources & References