From 88f752bf8bceacd5c8a9307c3ce80353af782c30 Mon Sep 17 00:00:00 2001
From: Samirbous <64742097+Samirbous@users.noreply.github.com>
Date: Mon, 27 Nov 2023 18:37:15 +0000
Subject: [PATCH] [New] First Time Seen NewCredentials Lgon Process (#3276)

* Create privilege_escalation_newcreds_logon_rare_process.toml

* Update privilege_escalation_newcreds_logon_rare_process.toml

* Update privilege_escalation_newcreds_logon_rare_process.toml

* Update privilege_escalation_newcreds_logon_rare_process.toml

* Update rules/windows/privilege_escalation_newcreds_logon_rare_process.toml

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>

---------

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
---
 ...scalation_newcreds_logon_rare_process.toml | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 rules/windows/privilege_escalation_newcreds_logon_rare_process.toml

diff --git a/rules/windows/privilege_escalation_newcreds_logon_rare_process.toml b/rules/windows/privilege_escalation_newcreds_logon_rare_process.toml
new file mode 100644
index 000000000..7db1faf21
--- /dev/null
+++ b/rules/windows/privilege_escalation_newcreds_logon_rare_process.toml
@@ -0,0 +1,56 @@
+[metadata]
+creation_date = "2023/11/15"
+integration = ["system", "windows"]
+maturity = "production"
+min_stack_comments = "The New Term rule type used in this rule was added in Elastic 8.4"
+min_stack_version = "8.4.0"
+updated_date = "2023/11/15"
+
+[rule]
+author = ["Elastic"]
+description = """
+Identifies a new credentials logon type performed by an unusual process. This may indicate the existence of an access token
+forging capability that are often abused to bypass access control restrictions.
+"""
+from = "now-9m"
+index = ["winlogbeat-*", "logs-system.*", "logs-windows.*"]
+language = "kuery"
+license = "Elastic License v2"
+name = "First Time Seen NewCredentials Logon Process"
+risk_score = 47
+rule_id = "e468f3f6-7c4c-45bb-846a-053738b3fe5d"
+severity = "medium"
+references = ["https://www.elastic.co/pt/blog/how-attackers-abuse-access-token-manipulation"]
+tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Privilege Escalation"]
+timestamp_override = "event.ingested"
+type = "new_terms"
+
+query = '''
+event.category:"authentication" and host.os.type:"windows" and winlog.logon.type:"NewCredentials" and winlog.event_data.LogonProcessName:(Advapi* or "Advapi  ")
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1134"
+name = "Access Token Manipulation"
+reference = "https://attack.mitre.org/techniques/T1134/"
+[[rule.threat.technique.subtechnique]]
+id = "T1134.001"
+name = "Token Impersonation/Theft"
+reference = "https://attack.mitre.org/techniques/T1134/001/"
+
+
+[rule.threat.tactic]
+id = "TA0004"
+name = "Privilege Escalation"
+reference = "https://attack.mitre.org/tactics/TA0004/"
+
+
+[rule.new_terms]
+field = "new_terms_fields"
+value = ["process.executable"]
+[[rule.new_terms.history_window_start]]
+field = "history_window_start"
+value = "now-7d"