Sigma rule: Linux Sudo Chroot Execution

Rule

Title

Linux Sudo Chroot Execution

Status

experimental

Level

low

Author

Swachchhanda Shrawn Poudel (Nextron Systems)

Date

2025-10-02

File

rules/linux/process_creation/proc_creation_lnx_chroot_execution.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

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.

Log source

product

linux

category

process_creation

Detection

selection:
    Image|endswith: '/sudo'
    CommandLine|contains:
        - ' --chroot '
        - 'sudo -R '
condition: selection

False positives (as the rule lists them)

• Legitimate administrative tasks or scripts that use 'sudo --chroot' for containerization, testing, or system management.

Tags

• attack.privilege-escalation
• attack.t1068

MITRE ATT&CK ids this rule names

• T1068

References

• https://github.com/kh4sh3i/CVE-2025-32463/blob/81bb430f84fa2089224733c3ed4bfa434c197ad4/exploit.sh

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/linux/process_creation/proc_creation_lnx_chroot_execution.yml