diff --git a/rules/windows/defense_evasion_stop_process_service_threshold.toml b/rules/windows/defense_evasion_stop_process_service_threshold.toml new file mode 100644 index 000000000..b4adc6841 --- /dev/null +++ b/rules/windows/defense_evasion_stop_process_service_threshold.toml @@ -0,0 +1,44 @@ +[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 terminations (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 Terminations" +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