Possible Split A File Into Pieces - Linux (via auditd)

This rule detects detection use of the command "split" to split files into parts and possible transfer.

SigmalowLinuxv1
sigma
title: Possible Split A File Into Pieces - Linux (via auditd)
id: d77c9eba-d957-5acd-a72f-012380fa4005
status: stable
description: 'This rule detects detection use of the command "split" to split files into parts and possible transfer.'
references:
    - https://attack.mitre.org/techniques/T1030/
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1030/T1030.md
author: 'Huntrule Team'
date: 2026-05-10
tags:
    - attack.exfiltration
    - attack.t1030
logsource:
    product: linux
    service: auditd
detection:
    selection:
        type: 'SYSCALL'
        comm: 'split'
    condition: selection
falsepositives:
    - Unknown
level: low

Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.