Suspicious Encrypting File System Remote call (EFSRPC) to domain controller

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:
    • Palo Alto Networks Platform Logs
      OR
    • XDR Agent

Detection Modules

ATT&CK Tactic

Lateral Movement (TA0008)

ATT&CK Technique

Use Alternate Authentication Material: Pass the Hash (T1550.002)

Severity

Medium

Description

An Encrypting File System Remote call (EFSRPC) was made to a domain controller.

Attacker's Goals

An attacker is attempting to steal credentials and move laterally within a network.

Investigative actions

  • Check for suspicious processes on the host.
  • Check if the source host is a vulnerability scanner.
  • Look for following suspicious connections using the DC machine account.