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macOS post-exploitation for credential harvesting, DTrace monitoring, TCC bypass, and stealth operations via native tools
Windows userland post-exploitation for credential harvesting, monitoring, AMSI/ETW bypass, and stealth operations
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Basado en la clasificación ocupacional SOC
Mostrando SKILL.md
| name | cis-ubuntu1604-v200-4-1-17 |
| description | Ensure the audit configuration is immutable |
| category | cis-logging |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-16.04","auditd","logging"] |
| cis_id | 4.1.17 |
| cis_benchmark | CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Set system audit so that audit rules cannot be modified with auditctl. Setting the flag "-e 2" forces audit to be put in immutable mode. Audit changes can only be made on system reboot.
Note: Reloading the auditd config to set active settings requires the auditd service to be restarted, and may require a system reboot.
In immutable mode, unauthorized users cannot execute changes to the audit system to potentially hide malicious activity and then put the audit rules back. Users would most likely notice a system reboot and that could alert administrators of an attempt to make unauthorized audit changes.
Any changes to the audit configuration will require a system reboot to take effect.
Run the following command and verify output matches:
grep "^\s*[^#]" /etc/audit/rules.d/*.rules | tail -1
-e 2
The last line in the rules should be -e 2.
Edit or create a file in the /etc/audit/rules.d/ directory ending in .rules and add the following line at the end of the file:
-e 2
Note: This must be the last line in the last rules file loaded. Ensure that it is in a file that will be loaded after all other rules files (e.g. 99-finalize.rules).
By default, the audit configuration is not immutable.
| Controls Version | Control |
|---|---|
| v7 | 6.2 Activate audit logging - Ensure that local logging has been enabled on all systems and networking devices. |
| v7 | 6.3 Enable Detailed Logging - Enable system logging to include detailed information such as an event source, date, user, timestamp, source addresses, destination addresses, and other useful elements. |