Attempt to Disable Syslog Service

 1[metadata]
 2creation_date = "2020/04/27"
 3integration = ["endpoint"]
 4maturity = "production"
 5min_stack_comments = "New fields added: required_fields, related_integrations, setup"
 6min_stack_version = "8.3.0"
 7updated_date = "2023/06/28"
 8
 9[rule]
10author = ["Elastic"]
11description = """
12Adversaries may attempt to disable the syslog service in an attempt to an attempt to disrupt event logging and evade
13detection by security controls.
14"""
15from = "now-9m"
16index = ["auditbeat-*", "logs-endpoint.events.*", "endgame-*"]
17language = "eql"
18license = "Elastic License v2"
19name = "Attempt to Disable Syslog Service"
20risk_score = 47
21rule_id = "2f8a1226-5720-437d-9c20-e0029deb6194"
22severity = "medium"
23tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Data Source: Elastic Endgame", "Data Source: Elastic Defend"]
24timestamp_override = "event.ingested"
25type = "eql"
26
27query = '''
28process where host.os.type == "linux" and event.action in ("exec", "exec_event") and
29 ( (process.name == "service" and process.args == "stop") or
30   (process.name == "chkconfig" and process.args == "off") or
31   (process.name == "systemctl" and process.args in ("disable", "stop", "kill"))
32 ) and process.args in ("syslog", "rsyslog", "syslog-ng")
33'''
34
35
36[[rule.threat]]
37framework = "MITRE ATT&CK"
38[[rule.threat.technique]]
39id = "T1562"
40name = "Impair Defenses"
41reference = "https://attack.mitre.org/techniques/T1562/"
42[[rule.threat.technique.subtechnique]]
43id = "T1562.001"
44name = "Disable or Modify Tools"
45reference = "https://attack.mitre.org/techniques/T1562/001/"
46
47
48
49[rule.threat.tactic]
50id = "TA0005"
51name = "Defense Evasion"
52reference = "https://attack.mitre.org/tactics/TA0005/"