Rare file transfer over SMB protocol

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

2 Days

Required Data

  • Requires:
    • XDR Agent

Detection Modules

ATT&CK Tactic

Lateral Movement (TA0008)

ATT&CK Technique

Remote Services (T1021)

Severity

Low

Description

The endpoint performed an abnormal file transfer over SMB to a remote host.

Attacker's Goals

  • Attackers may attempt to gain persistence or move laterally over the network by dropping executable files and scripts on remote hosts using the SMB protocol.

Investigative actions

  • Inspect the file that was transferred to the remote host.
  • Verify that this isn't IT activity.