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AlienVault OTX Malware

The threat actor leveraged Evilginx (likely version 3.0), an open source, advanced phishing adversary-in-the-middle (AITM, aka MITM) framework designed to steal login credentials and session cookies. Evilginx is widely used by cybercriminals to undermine multi-factor authentication (MFA) security, and this actor has used it to target at least 18 universities and educational institutions across the United States since April 2025. The campaigns were delivered through email and the phishing domains used subdomains that mimicked the legitimate SSO sites.

This threat involves the use of Evilginx version 3.0, an open-source adversary-in-the-middle (AITM) phishing framework that acts as a reverse proxy to intercept and steal login credentials and session cookies from users during Single Sign-On (SSO) authentication processes. Evilginx enables attackers to bypass multi-factor authentication (MFA) by capturing session tokens, effectively allowing them to impersonate legitimate users without needing to compromise MFA directly. The threat actor has conducted targeted phishing campaigns since April 2025, focusing on at least 18 universities and educational institutions in the United States. These campaigns are delivered via email, using phishing domains with subdomains crafted to closely resemble legitimate SSO login pages, increasing the likelihood of user deception. The attacker’s infrastructure was uncovered through DNS analysis, revealing the use of malicious subdomains and domain names designed to evade detection. Although no widespread exploitation beyond these campaigns is currently known, the technique is sophisticated and effective against organizations relying on SSO and MFA for authentication security. The attack leverages techniques categorized under MITRE ATT&CK tactics T1557 (Adversary-in-the-Middle), T1566 (Phishing), and T1539 (Steal Web Session Cookie). The absence of a CVSS score necessitates an assessment based on impact and exploitability, with the medium severity reflecting the threat’s ability to compromise confidentiality and integrity without requiring complex exploitation or extensive user interaction beyond phishing. The threat highlights the importance of securing DNS infrastructure, user awareness, and deploying anti-phishing defenses to protect SSO environments.

Detailed information about DNS Uncovers Infrastructure Used in SSO Attacks. Get real-time updates, technical details, and mitigation strategies.

DNS Uncovers Infrastructure Used in SSO Attacks - Live Threat Intelligence - Threat Radar | OffSeq.com

DNS Uncovers Infrastructure Used in SSO Attacks

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