[New Rule] High Number of Process and/or Services Termination

rules/windows/defense_evasion_stop_process_service_threshold.toml

@@ -0,0 +1,45 @@
+[metadata]
+creation_date = "2020/12/03"
+maturity = "production"
+updated_date = "2020/12/03"
+
+[rule]
+author = ["Elastic"]
+description = """
+This rule identifies a high number (10) of process modifications (stop, delete, or suspend) from the same host within a
+short time period. This may indicate a defense evasion attempt.
+"""
+from = "now-9m"
+index = ["winlogbeat-*", "logs-endpoint.events.*"]
+language = "kuery"
+license = "Elastic License"
+name = "High Number of Process and/or Service Termination"
+risk_score = 47
+rule_id = "035889c4-2686-4583-a7df-67f89c292f2c"
+severity = "medium"
+tags = ["Elastic", "Host", "Windows", "Threat Detection", "Defense Evasion"]
+type = "threshold"
+
+query = '''
+event.category:process and event.type:start and process.name:(net.exe or sc.exe or taskkill.exe) and
+ process.args:(stop or pause or delete or "/PID" or "/IM" or "/T" or "/F" or "/t" or "/f" or "/im" or "/pid")
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1089"
+name = "Disabling Security Tools"
+reference = "https://attack.mitre.org/techniques/T1089/"
+
+
+[rule.threat.tactic]
+id = "TA0005"
+name = "Defense Evasion"
+reference = "https://attack.mitre.org/tactics/TA0005/"
+
+[rule.threshold]
+field = "host.id"
+value = 10
+