IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Namespace Manipulation Using Unshare
editNamespace Manipulation Using Unshare
editIdentifies suspicious usage of unshare to manipulate system namespaces. Unshare can be utilized to escalate privileges or escape container security boundaries. Threat actors have utilized this binary to allow themselves to escape to the host and access other resources or escalate privileges.
Rule type: eql
Rule indices:
- auditbeat-*
- logs-endpoint.events.*
- endgame-*
Severity: medium
Risk score: 47
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
References:
Tags:
- Domain: Endpoint
- OS: Linux
- Use Case: Threat Detection
- Tactic: Privilege Escalation
- Data Source: Elastic Endgame
- Data Source: Elastic Defend
Version: 8
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editprocess where host.os.type == "linux" and event.type == "start" and event.action : ("exec", "exec_event") and process.executable: "/usr/bin/unshare" and not process.parent.executable: ("/usr/bin/udevadm", "*/lib/systemd/systemd-udevd", "/usr/bin/unshare") and not process.args : "/usr/bin/snap"
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Privilege Escalation
- ID: TA0004
- Reference URL: https://attack.mitre.org/tactics/TA0004/
-
Technique:
- Name: Create or Modify System Process
- ID: T1543
- Reference URL: https://attack.mitre.org/techniques/T1543/