diff --git a/rules/cross-platform/credential_access_forced_authentication.toml b/rules/cross-platform/credential_access_forced_authentication.toml new file mode 100644 index 00000000000..3e2459303a0 --- /dev/null +++ b/rules/cross-platform/credential_access_forced_authentication.toml @@ -0,0 +1,65 @@ +[metadata] +creation_date = "2024/07/22" +integration = ["endpoint", "system"] +maturity = "production" +updated_date = "2024/07/22" + +[rule] +author = ["Elastic"] +description = """ +Identifies a potential forced authentication. Attackers may attempt to force targets to authenticate to a Linux machine +controlled by them to capture hashes or enable relay attacks. +""" +from = "now-9m" +index = ["logs-endpoint.events.network-*", "logs-system.security-*"] +language = "eql" +license = "Elastic License v2" +name = "Active Directory Forced Authentication from Linux Host" +references = [ + "https://www.thehacker.recipes/a-d/movement/mitm-and-coerced-authentications/ms-efsr", + "https://www.thehacker.recipes/a-d/movement/mitm-and-coerced-authentications/ms-rprn", + "https://www.thehacker.recipes/a-d/movement/mitm-and-coerced-authentications/ms-dfsnm", + "https://attack.mitre.org/techniques/T1187/", +] +risk_score = 47 +rule_id = "c24e9a43-f67e-431d-991b-09cdb83b3c0c" +setup = """## Setup + +This rule uses Elastic Endpoint network events from Linux hosts and system integration events from Domain controllers +for correlation. Both data should be collected from the hosts for this detection to work. +""" +severity = "medium" +tags = [ + "Domain: Endpoint", + "OS: Windows", + "OS: Linux", + "Use Case: Threat Detection", + "Tactic: Credential Access", + "Data Source: Elastic Defend", + "Data Source: Active Directory", + "Use Case: Active Directory Monitoring", +] +timestamp_override = "event.ingested" +type = "eql" + +query = ''' +sequence with maxspan=15s +[network where host.os.type == "linux" and event.action == "connection_attempted" and destination.port == 445] by host.ip +[authentication where host.os.type == "windows" and event.action == "logged-in" and + winlog.event_data.AuthenticationPackageName : "NTLM" and winlog.event_data.SubjectUserSid == "S-1-0-0"] by source.ip +''' + + +[[rule.threat]] +framework = "MITRE ATT&CK" +[[rule.threat.technique]] +id = "T1187" +name = "Forced Authentication" +reference = "https://attack.mitre.org/techniques/T1187/" + + +[rule.threat.tactic] +id = "TA0006" +name = "Credential Access" +reference = "https://attack.mitre.org/tactics/TA0006/" +