Malicious Evilginx AiTM Phishing Proxy Default TLS Certificate

ATT&CK techniques

Cred Access → Collection

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1111Multi-Factor Authentication Interception
- T1557Adversary-in-the-Middle
Discovery
Lateral Movement
Collection
- T1557Adversary-in-the-Middle
C2
Exfiltration
Impact

What it detects

This rule detects TLS certificates carrying the Evilginx default issuer strings Evilginx Signature Trust Co. or Evilginx Super-Evil Root CA. These constants are baked into the Evilginx reverse-proxy adversary-in-the-middle framework used in this MFA-bypass phishing campaign to relay victim sessions, so observing them indicates an active AiTM proxy harvesting credentials and session cookies.

Reporting behind it

Related detections9 linkedT1557 — drag to rearrange

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Malicious Root Certificate Installed via certutil addstore for AiTM Interception

Suspicious Code of Conduct Phishing Email From cocinternal.com Sender (via m365)

Suspicious Entra Sign-In With Axios Automation User-Agent via AiTM Token Replay (via azure)

Suspicious OfficeHome Sign-In With Axios User Agent via Tycoon 2FA Proxy

Suspicious AWS AiTM Phishing Kit Endpoint Access via Proxy

Malicious Evilginx AiTM Phishing Proxy Default TLS Certificate

Pivot detection · T1557 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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