[New Rule] Docker Release File Creation (#4661)

rules/linux/privilege_escalation_docker_release_file_creation.toml

@@ -0,0 +1,50 @@
+[metadata]
+creation_date = "2025/04/25"
+integration = ["endpoint"]
+maturity = "production"
+updated_date = "2025/04/25"
+
+[rule]
+author = ["Elastic"]
+description = """
+This rule detects the creation of files named release_agent or notify_on_release, which are
+commonly associated with the abuse of Linux cgroup release mechanisms. In Docker or containerized
+environments, this behavior may indicate an attempt to exploit privilege escalation vulnerabilities
+such as CVE-2022-0492, where attackers use the release_agent feature to execute code on the host
+from within a container.
+"""
+from = "now-9m"
+index = ["logs-endpoint.events.file*"]
+language = "eql"
+license = "Elastic License v2"
+name = "Docker Release File Creation"
+references = ["https://sysdig.com/blog/detecting-mitigating-cve-2022-0492-sysdig/"]
+risk_score = 21
+rule_id = "4d4cda2b-9aad-4702-a0a2-75952bd6a77c"
+severity = "low"
+tags = [
+    "Domain: Endpoint",
+    "Domain: Container",
+    "OS: Linux",
+    "Use Case: Threat Detection",
+    "Tactic: Privilege Escalation",
+    "Data Source: Elastic Defend",
+]
+timestamp_override = "event.ingested"
+type = "eql"
+query = '''
+file where host.os.type == "linux" and event.type == "creation" and file.name in ("release_agent", "notify_on_release")
+'''
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+
+[[rule.threat.technique]]
+id = "T1611"
+name = "Escape to Host"
+reference = "https://attack.mitre.org/techniques/T1611/"
+
+[rule.threat.tactic]
+id = "TA0004"
+name = "Privilege Escalation"
+reference = "https://attack.mitre.org/tactics/TA0004/"