diff --git a/rules/aws/defense_evasion_config_service_rule_deletion.toml b/rules/aws/defense_evasion_config_service_rule_deletion.toml new file mode 100644 index 000000000..6379237f9 --- /dev/null +++ b/rules/aws/defense_evasion_config_service_rule_deletion.toml @@ -0,0 +1,53 @@ +[metadata] +creation_date = "2020/06/26" +ecs_version = ["1.5.0"] +maturity = "production" +updated_date = "2020/07/07" + +[rule] +author = ["Elastic"] +description = """ +Identifies attempts to delete an AWS Config Service rule. An adversary may tamper with Config rules in order to +reduce visibiltiy into the security posture of an account and / or its workload instances. +""" +false_positives = [ + """ + Privileged IAM users with security responsibilities may be expected to make changes to the Config rules in order + to align with local security policies and requirements. Automation, orchestration, and security tools may also make + changes to the Config service, where they are used to automate setup or configuration of AWS accounts. Other kinds + of user or service contexts do not commonly make changes to this service. + """, +] +from = "now-60m" +index = ["filebeat-*"] +interval = "10m" +language = "kuery" +license = "Elastic License" +name = "AWS Config Service Tampering" +references = [ + "https://docs.aws.amazon.com/config/latest/developerguide/how-does-config-work.html", + "https://docs.aws.amazon.com/config/latest/APIReference/API_Operations.html", +] +risk_score = 47 +rule_id = "7024e2a0-315d-4334-bb1a-552d604f27bc" +severity = "medium" +tags = ["AWS", "Elastic"] +type = "query" + +query = ''' +event.dataset: aws.cloudtrail and event.action: DeleteConfigRule and event.provider: config.amazonaws.com +''' + + +[[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/"