{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/single-factor-authentication/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":["Okta Identity Cloud"],"_cs_severities":["medium"],"_cs_tags":["okta","single-factor authentication","account takeover"],"_cs_type":"advisory","_cs_vendors":["Okta"],"content_html":"\u003cp\u003eThis brief focuses on detecting successful single-factor authentication attempts against Okta dashboards. The detection logic identifies successful authentication events where \u0026quot;Okta Verify\u0026quot; is not used, suggesting a potential misconfiguration, policy violation, or account takeover attempt. The activity is detected by analyzing Okta logs for successful authentication events. An attacker exploiting this weakness could gain unauthorized access to accounts, leading to data breaches or further exploitation within the environment. The initial detection logic was published in Splunk ES Content as of April 15, 2026. This remains a relevant tactic for initial access and privilege escalation.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker gains initial access to a valid username/password through credential harvesting or previously compromised credentials. (T1586.003)\u003c/li\u003e\n\u003cli\u003eThe attacker attempts to log into the Okta dashboard using the compromised credentials.\u003c/li\u003e\n\u003cli\u003eOkta processes the login attempt, and because MFA is either disabled or not enforced for the account, a single-factor authentication is successful.\u003c/li\u003e\n\u003cli\u003eThe Okta logs record the successful authentication event with an eventType of either 'user.authentication.verify' or 'user.authentication.auth_via_mfa', and the targets field not containing \u0026quot;Okta Verify.\u0026quot;\u003c/li\u003e\n\u003cli\u003eThe attacker gains access to the Okta dashboard and any applications accessible through Okta.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages their access to enumerate users, groups, and applications within the Okta environment.\u003c/li\u003e\n\u003cli\u003eThe attacker escalates privileges by assigning themselves higher-level roles or adding themselves to privileged groups.\u003c/li\u003e\n\u003cli\u003eThe attacker gains access to sensitive applications and data, potentially leading to data exfiltration or other malicious activities. (T1621)\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eA successful single-factor authentication attack can result in unauthorized access to sensitive applications and data. This can lead to data breaches, financial loss, and reputational damage. The number of affected users and the extent of the damage depend on the privileges and access levels associated with the compromised account. Organizations using Okta for identity management are particularly vulnerable. The successful exploitation can bypass existing security controls and create an entry point for more significant attacks.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eOkta Successful Single Factor Authentication\u003c/code\u003e to your SIEM and tune for your environment to identify single-factor authentication events.\u003c/li\u003e\n\u003cli\u003eInvestigate any alerts generated by the Sigma rule \u003ccode\u003eOkta Successful Single Factor Authentication\u003c/code\u003e to determine the legitimacy of the authentication attempt.\u003c/li\u003e\n\u003cli\u003eEnforce MFA for all users in the Okta environment to mitigate the risk of account takeover, referencing the Okta documentation on MFA implementation.\u003c/li\u003e\n\u003cli\u003eReview and enforce Okta MFA policies to prevent single-factor authentication (reference: Okta documentation).\u003c/li\u003e\n\u003cli\u003eMonitor Okta logs for suspicious activity, such as unusual login locations or access patterns, using the Splunk Add-on for Okta Identity Cloud (\u003ca href=\"https://splunkbase.splunk.com/app/6553)\"\u003ehttps://splunkbase.splunk.com/app/6553)\u003c/a\u003e.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-03-okta-single-factor-auth/","summary":"Successful single-factor authentication events against the Okta Dashboard for accounts without Multi-Factor Authentication (MFA) enabled, potentially indicating account takeover attempts.","title":"Okta Successful Single Factor Authentication Attempt","url":"https://feed.craftedsignal.io/briefs/2024-01-03-okta-single-factor-auth/"},{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Azure Active Directory"],"_cs_severities":["medium"],"_cs_tags":["azuread","single-factor authentication","account takeover"],"_cs_type":"advisory","_cs_vendors":["Microsoft"],"content_html":"\u003cp\u003eThis analytic identifies successful single-factor authentication events against Azure Active Directory. It leverages Azure SignInLogs data, specifically focusing on events where single-factor authentication succeeded. This activity is significant as it may indicate a misconfiguration, policy violation, or potential account takeover attempt. An attacker gaining unauthorized access to the account, potentially leading to data breaches, privilege escalation, or further exploitation within the environment. Multi-factor authentication (MFA) is a crucial security control, and its absence can significantly increase the risk of account compromise. The analytic focuses on Azure AD events and is designed to detect deviations from expected authentication patterns.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eInitial Access: The attacker gains initial access to a valid username and password through phishing, credential stuffing, or purchasing stolen credentials.\u003c/li\u003e\n\u003cli\u003eAttempt Authentication: The attacker attempts to authenticate to Azure AD using the compromised credentials, bypassing MFA if it is not enabled or configured correctly.\u003c/li\u003e\n\u003cli\u003eSingle-Factor Authentication Success: Azure AD logs a successful single-factor authentication event, indicating that the attacker has gained access without additional verification.\u003c/li\u003e\n\u003cli\u003eReconnaissance: Once authenticated, the attacker performs reconnaissance activities within the Azure AD environment, gathering information about users, groups, and resources.\u003c/li\u003e\n\u003cli\u003ePrivilege Escalation: The attacker attempts to escalate privileges by exploiting misconfigurations or vulnerabilities within Azure AD or related services.\u003c/li\u003e\n\u003cli\u003eLateral Movement: The attacker moves laterally to other systems and applications within the organization's environment, leveraging the compromised account's access rights.\u003c/li\u003e\n\u003cli\u003eData Exfiltration: The attacker accesses and exfiltrates sensitive data from cloud storage, databases, or applications accessible with the compromised credentials.\u003c/li\u003e\n\u003cli\u003ePersistence: The attacker establishes persistence by creating new user accounts, modifying existing ones, or deploying malicious applications within Azure AD.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eA successful single-factor authentication attack can lead to significant damage, including unauthorized access to sensitive data, privilege escalation, and lateral movement within the organization's cloud environment. The absence of MFA makes accounts vulnerable to credential-based attacks. The impact could include data breaches, financial loss, and reputational damage. Many organizations now require this as part of compliance frameworks.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the provided Sigma rule to your SIEM to detect successful single-factor authentication events in Azure AD logs (Azure Active Directory, \u003ccode\u003eazure_monitor_aad\u003c/code\u003e).\u003c/li\u003e\n\u003cli\u003eReview and enforce multi-factor authentication (MFA) policies for all users and applications in Azure AD to prevent unauthorized access (\u003ca href=\"https://docs.microsoft.com/en-us/azure/active-directory/authentication/concept-mfa-howitworks\"\u003ehttps://docs.microsoft.com/en-us/azure/active-directory/authentication/concept-mfa-howitworks\u003c/a\u003e*).\u003c/li\u003e\n\u003cli\u003eInvestigate any detected successful single-factor authentication events to determine if they are legitimate or indicative of malicious activity (Azure Active Directory, \u003ccode\u003eazure_monitor_aad\u003c/code\u003e).\u003c/li\u003e\n\u003cli\u003eMonitor user activity for signs of reconnaissance, privilege escalation, and lateral movement following a successful single-factor authentication event (Azure Active Directory, \u003ccode\u003eazure_monitor_aad\u003c/code\u003e).\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-03-azure-ad-single-factor-auth/","summary":"Successful single-factor authentication events against Azure Active Directory are identified using Azure SignInLogs data, which may indicate misconfiguration, policy violation, or potential account takeover leading to data breaches and privilege escalation.","title":"Azure AD Successful Single-Factor Authentication","url":"https://feed.craftedsignal.io/briefs/2024-01-03-azure-ad-single-factor-auth/"}],"language":"en","title":"CraftedSignal Threat Feed - Single-Factor Authentication","version":"https://jsonfeed.org/version/1.1"}