[New Rule] Potential Sudo Hijacking Detected (#2966)

* [New Rule] Potential Sudo Hijacking Detected

* Update privilege_escalation_sudo_hijacking.toml

(cherry picked from commit 716b621)

Author: Aegrah

rules/linux/privilege_escalation_sudo_hijacking.toml

@@ -0,0 +1,61 @@
+[metadata]
+creation_date = "2023/07/26"
+integration = ["endpoint"]
+maturity = "production"
+min_stack_comments = "New fields added: required_fields, related_integrations, setup"
+min_stack_version = "8.3.0"
+updated_date = "2023/07/26"
+
+[rule]
+author = ["Elastic"]
+description = """
+Identifies the creation of a sudo binary located at /usr/bin/sudo. Attackers may hijack the default sudo binary and 
+replace it with a custom binary or script that can read the user's password in clear text to escalate privileges or 
+enable persistence onto the system every time the sudo binary is executed.
+"""
+from = "now-9m"
+index = ["logs-endpoint.events.*", "endgame-*"]
+language = "eql"
+license = "Elastic License v2"
+name = "Potential Sudo Hijacking Detected"
+references = ["https://eapolsniper.github.io/2020/08/17/Sudo-Hijacking/"]
+risk_score = 47
+rule_id = "88fdcb8c-60e5-46ee-9206-2663adf1b1ce"
+severity = "medium"
+tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Privilege Escalation", "Tactic: Persistence", "Data Source: Elastic Endgame"]
+timestamp_override = "event.ingested"
+type = "eql"
+query = '''
+file where event.type in ("creation", "file_create_event") and file.path == "/usr/bin/sudo"
+'''
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+
+[[rule.threat.technique]]
+id = "T1548"
+name = "Abuse Elevation Control Mechanism"
+reference = "https://attack.mitre.org/techniques/T1548/"
+
+[[rule.threat.technique.subtechnique]]
+id = "T1548.003"
+name = "Sudo and Sudo Caching"
+reference = "https://attack.mitre.org/techniques/T1548/003/"
+
+[rule.threat.tactic]
+id = "TA0004"
+name = "Privilege Escalation"
+reference = "https://attack.mitre.org/tactics/TA0004/"
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+
+[[rule.threat.technique]]
+id = "T1574"
+name = "Hijack Execution Flow"
+reference = "https://attack.mitre.org/techniques/T1574/"
+
+[rule.threat.tactic]
+id = "TA0003"
+name = "Persistence"
+reference = "https://attack.mitre.org/tactics/TA0003/"