Linux sudo --chroot Command Execution

Identifies Linux executions of sudo with chroot-related options ("--chroot" or "-R") via process creation command-line telemetry.

FreeReviewedSigma · Low · v3

Product: linux
Category: process_creation
Author: Swachchhanda Shrawn Poudel (Nextron Systems) (SigmaHQ), DRL 1.1
Published: 2025-10-02
Updated: 2026-07-31

Analysis Detection

ATT&CK techniques

Priv Esc

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
- T1068Exploitation for Privilege Escalation
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule identifies Linux process executions where the command line includes sudo’s --chroot-related options (e.g., “ --chroot ” or “sudo -R ”) when the process image ends with /sudo. Attackers can use chroot to run commands in an alternate filesystem view while operating under elevated privileges, which can complicate monitoring and incident response. It relies on process creation telemetry with the executable path and command-line arguments.

Reporting behind it

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Linux sudo --chroot Command Execution

Pivot detection · T1068 · 9 related

Changelog

v3
Candidate ingested via manual entry.2026-07-31
v2
Candidate ingested via manual entry.2026-07-31
v1
No changelog recorded for this version.2026-07-30

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

linux-sudo-chroot-command-execution-f2bed782

title: Linux sudo --chroot Command Execution
id: 3423febc-1ac3-4d5b-bf88-c73c69671453
status: experimental
description: This rule identifies Linux process executions where the command line includes sudo’s --chroot-related options (e.g., “ --chroot ” or “sudo -R ”) when the process image ends with /sudo. Attackers can use chroot to run commands in an alternate filesystem view while operating under elevated privileges, which can complicate monitoring and incident response. It relies on process creation telemetry with the executable path and command-line arguments.
references:
  - https://github.com/kh4sh3i/CVE-2025-32463/blob/81bb430f84fa2089224733c3ed4bfa434c197ad4/exploit.sh
  - https://github.com/SigmaHQ/sigma/blob/master/rules/linux/process_creation/proc_creation_lnx_chroot_execution.yml
author: Swachchhanda Shrawn Poudel (Nextron Systems), Huntrule Team
date: 2025-10-02
tags:
  - attack.privilege-escalation
  - attack.t1068
logsource:
  category: process_creation
  product: linux
detection:
  selection:
    Image|endswith: /sudo
    CommandLine|contains:
      - " --chroot "
      - "sudo -R "
  condition: selection
falsepositives:
  - Legitimate administrative tasks or scripts that use 'sudo --chroot' for containerization, testing, or system management.
level: low
license: DRL-1.1
related:
  - id: f2bed782-994e-4f40-9cd5-518198cb3fba
    type: derived

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