EMAIL BETA - Email contains potentially malicious attachments that are not blocked by default

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2025-04-21
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

ATT&CK Tactic

ATT&CK Technique

Severity

Informational

Description

Identified file extensions that are not blocked by default in G-Suite or O365, that may be malicious.

Attacker's Goals

  • Deploy malicious attachments through emails to compromise systems or gain unauthorized access.

Investigative actions

  • Check the file types and investigate the legitimacy of files intended to be sent via email.
  • Scrutinize the attachments for any suspicious indications.