Linux Gem Privilege Escalation
The following analytic detects the execution of the RubyGems utility with elevated privileges, specifically when it is used to run system commands as root. This detection leverages data from Endpoint Detection and…
Description
The following analytic detects the execution of the RubyGems utility with elevated privileges, specifically when it is used to run system commands as root. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line executions that include "gem open -e" and "sudo". This activity is significant because it indicates a potential privilege escalation attempt, allowing a user to execute commands as the root user. If confirmed malicious, this could lead to full system compromise, enabling the attacker to gain root access and execute arbitrary commands with elevated privileges.
Detection logic
Detection requirements
- Platform
- LinuxmacOS
The rule states no platform. This is derived from the ATT&CK technique it maps to.
- Log source category
- sysmon_for_linux_eventid_1
Known benign triggers
- False positives may be present, filter as needed.
MITRE ATT&CK mappings
0 exclusive techniques.This is coverage no other published rule has; it is not this rule's total technique count.
References
| Reference | Cited by |
|---|---|
| en.wikipedia.org/wiki/RubyGems | Only this detection cites it |
| gtfobins.github.io/gtfobins/gem/ | Only this detection cites it |
From the source
- At source
- Open at source
- Upstream identifier
- 0115482a-5dcb-4bb0-bcca-5d095d224236
- Tagged by the source as
- Linux Living Off The LandLinux Privilege EscalationEndpointendpointSplunk CloudSplunk EnterpriseSplunk Enterprise Securityendpoint
Licence
- Published under
- Apache License 2.0Read the licence
- Attribution
- Required
- Obtained under
- Apache-2.0Read the origin licence
Authorship
- Written by
- Published
- Aug 26, 2026
- Version
- 1