Rare SMTP/S Session

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-06-04
Category
Analytics Alert Reference
Order
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

1 Day

Required Data

  • Requires one of the following data sources:
    • XDR Agent
      OR
    • Third-Party Firewalls

Detection Modules

ATT&CK Tactic

Exfiltration (TA0010)

ATT&CK Technique

Exfiltration Over Alternative Protocol (T1048)

Severity

Informational

Description

The Simple Mail Transfer Protocol (SMTP) and its SSL-secured variant SMTPS are used to send email. Attackers can use SMTP/S to exfiltrate data from your network.

Attacker's Goals

SMTP and its SSL-secured variant SMTPS are used to send email. Attackers can use SMTP/S to exfiltrate data from your network.

Investigative actions

  • Check whether the initiator process is benign or normal for the host and/or user performing it.
  • Check whether additional malicious commands were executed from the same process.