Unusual display name in From header

Cortex XDR Analytics Alert Reference by Alert name

Product

Cortex XDR

Last date published

2026-03-10

Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	Requires: Microsoft 365 Emails
Detection Modules	Email
Detector Tags
ATT&CK Tactic	Reconnaissance (TA0043) Initial Access (TA0001)
ATT&CK Technique	Phishing for Information (T1598) Phishing (T1566)
Severity	Informational

An email was detected with an unusual display name in the From header.

Evade defenses and hide potential malicious data inside the email display name.

Analyze the email further to determine the source of the anomaly and what can be done about it.

ATT&CK Tactic

ATT&CK Technique

Severity

Low

An email was detected with an unusual sender display name in the From header containing an embedded URL.

Evade defenses and hide potential malicious data inside the email display name.

Analyze the email further to determine the source of the anomaly and what can be done about it.

ATT&CK Tactic

ATT&CK Technique

Severity

Informational

An email was detected where the display name in the From header is unusual and matches the sender email address.

Evade defenses and hide potential malicious data inside the email display name.

Analyze the email further to determine the source of the anomaly and what can be done about it.