{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/azurehound/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Azure Active Directory","Microsoft Graph"],"_cs_severities":["medium"],"_cs_tags":["azuread","reconnaissance","azurehound"],"_cs_type":"advisory","_cs_vendors":["Microsoft"],"content_html":"\u003cp\u003eThis threat brief focuses on the detection of the AzureHound User-Agent within Azure Active Directory (Azure AD) environments. AzureHound is a tool utilized to gather comprehensive information about Azure AD configurations. While legitimate security professionals often use it for auditing, malicious actors can leverage it for reconnaissance. By mapping the Azure AD infrastructure, attackers can identify potential weaknesses and targets for exploitation. This detection is crucial because it signals potential unauthorized reconnaissance, allowing defenders to proactively address security threats before further compromise occurs. The activity is detected within Microsoft Graph Activity Logs and NonInteractiveUserSignInLogs.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003eInitial Access:\u003c/strong\u003e Attacker gains initial access to an account or service principal within the Azure AD environment (potentially through compromised credentials or misconfiguration).\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eAuthentication:\u003c/strong\u003e The attacker authenticates to Azure AD using the compromised account or service principal.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eGraph API Enumeration:\u003c/strong\u003e Attacker uses AzureHound, configured with the compromised credentials, to send a series of requests to the Microsoft Graph API.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eUser and Group Discovery:\u003c/strong\u003e AzureHound enumerates users, groups, and their associated attributes within the Azure AD tenant.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eApplication Registration Discovery:\u003c/strong\u003e The tool identifies application registrations, their permissions, and related configurations.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eRole Assignment Enumeration:\u003c/strong\u003e AzureHound retrieves information about role assignments, identifying privileged accounts and potential escalation paths.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eData Collection and Analysis:\u003c/strong\u003e The attacker gathers the collected data from the Graph API requests and analyzes it to identify vulnerabilities, misconfigurations, and potential targets for further exploitation.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eLateral Movement/Privilege Escalation:\u003c/strong\u003e Based on the information gathered, the attacker attempts to move laterally within the Azure AD environment or escalate privileges to gain control over critical resources.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eA successful AzureHound reconnaissance can expose sensitive information about the Azure AD environment, including user accounts, group memberships, application registrations, and role assignments. This information can be used by attackers to identify vulnerabilities, misconfigurations, and potential targets for further exploitation. The number of victims and specific sectors targeted depend on the attacker's objectives. If the attack succeeds, it could lead to data breaches, unauthorized access to critical resources, and ultimately, significant financial and reputational damage.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the provided Sigma rule \u003ccode\u003eAzure AD AzureHound UserAgent Detected\u003c/code\u003e to your SIEM and tune for your environment, focusing on the \u003ccode\u003eMicrosoftGraphActivityLogs\u003c/code\u003e and \u003ccode\u003eNonInteractiveUserSignInLogs\u003c/code\u003e to detect AzureHound activity.\u003c/li\u003e\n\u003cli\u003eInvestigate any detected instances of the AzureHound User-Agent to determine the source and purpose of the activity, referencing the \u003ccode\u003esrc\u003c/code\u003e and \u003ccode\u003euser\u003c/code\u003e fields in the Sigma rule output.\u003c/li\u003e\n\u003cli\u003eReview and harden Azure AD configurations based on the information potentially gathered by AzureHound, such as overly permissive application permissions or exposed credentials.\u003c/li\u003e\n\u003cli\u003eMonitor for unusual activity following the detection of AzureHound, such as attempts to access sensitive resources or escalate privileges, using the analytic story \u0026quot;Azure Active Directory Privilege Escalation\u0026quot;.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-04T12:00:00Z","date_published":"2024-01-04T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-azurehound-recon/","summary":"Detection of the AzureHound User-Agent in Azure AD logs indicates potential reconnaissance activity by adversaries mapping the Azure AD infrastructure for vulnerabilities.","title":"AzureHound Reconnaissance Activity in Azure AD","url":"https://feed.craftedsignal.io/briefs/2024-01-azurehound-recon/"}],"language":"en","title":"CraftedSignal Threat Feed - Azurehound","version":"https://jsonfeed.org/version/1.1"}