Usage of homograph characters detected in an email attachment(s) name

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2026-01-14
Category
Analytics Alert Reference
Index by
Alert name

Synopsis

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

Evasion, Phishing

ATT&CK Tactic

ATT&CK Technique

Severity

Informational

Description

Detected characters resembling Latin letters within an email attachment(s) name.
This method could be used as a method to evade text or file scanners and analyzers.

Attacker's Goals

Evade file scanner defenses, tricking recipients into running malicious attachments.

Investigative actions

  • Examine the sender's IP address and reputation.
  • Verify whether the sender's IP address has appeared in different log sources before, and if it is recognizable.
  • Check the domain the email came from, and if this domain is recognized within the organization.
  • Scrutinize the attachments related to the email message.
  • Monitor file-related actions taken related to the attachment.

Variations

Usage of homograph characters detected in an email attachment(s) extension

Synopsis

ATT&CK Tactic

ATT&CK Technique

Severity

Low

Description

Detected non-latin characters within an email attachment's extension(s).
Detected characters resembling Latin letters within an email attachment(s) name.
This method could be used as a method to evade text or file scanners and analyzers.

Attacker's Goals

Evade file scanner defenses, tricking recipients into running malicious attachments.

Investigative actions

  • Examine the sender's IP address and reputation.
  • Verify whether the sender's IP address has appeared in different log sources before, and if it is recognizable.
  • Check the domain the email came from, and if this domain is recognized within the organization.
  • Scrutinize the attachments related to the email message.
  • Monitor file-related actions taken related to the attachment.