Detection rules › Sigma
Linux Sudo Chroot Execution
Detects the execution of 'sudo' command with '--chroot' option, which is used to change the root directory for command execution. Attackers may use this technique to evade detection and execute commands in a modified environment. This can be part of a privilege escalation strategy, as it allows the execution of commands with elevated privileges in a controlled environment as seen in CVE-2025-32463. While investigating, look out for unusual or unexpected use of 'sudo --chroot' in conjunction with other commands or scripts such as execution from temporary directories or unusual user accounts.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Privilege Escalation | T1068 Exploitation for Privilege Escalation |
Event coverage
| Provider | Event |
|---|---|
| Sysmon-for-Linux | Event ID 1 |
Rule body yaml
title: Linux Sudo Chroot Execution
id: f2bed782-994e-4f40-9cd5-518198cb3fba
status: experimental
description: |
Detects the execution of 'sudo' command with '--chroot' option, which is used to change the root directory for command execution.
Attackers may use this technique to evade detection and execute commands in a modified environment.
This can be part of a privilege escalation strategy, as it allows the execution of commands with elevated privileges in a controlled environment as seen in CVE-2025-32463.
While investigating, look out for unusual or unexpected use of 'sudo --chroot' in conjunction with other commands or scripts such as execution from temporary directories or unusual user accounts.
references:
- https://github.com/kh4sh3i/CVE-2025-32463/blob/81bb430f84fa2089224733c3ed4bfa434c197ad4/exploit.sh
author: Swachchhanda Shrawn Poudel (Nextron Systems)
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
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '/sudo'
CommandLine|contains:
- ' --chroot '
- 'sudo -R '
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | match |
|
Image | ends_with |
|