Massive upload to a rare storage or mail domain

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-06-18
Category
Analytics Alert Reference
Order
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

1 Hour

Deduplication Period

1 Day

Required Data

  • Requires:
    • Palo Alto Networks Platform Logs
  • Requires:
    • XDR Agent

Detection Modules

Identity Threat Module

ATT&CK Tactic

Exfiltration (TA0010)

ATT&CK Technique

Severity

Informational

Description

A large amount of data was transferred to an external site that is used for mail or storage. This behavior may indicate data exfiltration.

Attacker's Goals

A user uploaded an abnormal amount of data to a file sharing service. This activity might indicate an attempt to exfiltrate files and data from the organization.

Investigative actions

  • Check for any other suspicious activity related to the host and the user involved in the alert.
  • Identify the user uploading the data to determine if the transfer is sanctioned.

Variations

A user uploaded over 500 MB to a rare storage or mail domain

Synopsis

ATT&CK Tactic

Exfiltration (TA0010)

ATT&CK Technique

Severity

Low

Description

A user uploaded over 500 MB to a file sharing service that is rarely accessed by them or anyone else in the organization.

Attacker's Goals

A user uploaded an abnormal amount of data to a file sharing service. This activity might indicate an attempt to exfiltrate files and data from the organization.

Investigative actions

  • Check for any other suspicious activity related to the host and the user involved in the alert.
  • Identify the user uploading the data to determine if the transfer is sanctioned.