From e6df245ff3f82b075a5c2c66ad6c1c8b206ce826 Mon Sep 17 00:00:00 2001
From: Samirbous <64742097+Samirbous@users.noreply.github.com>
Date: Tue, 5 Dec 2023 17:34:10 +0000
Subject: [PATCH] [New] Interactive Logon by an Unusual Process (#3299)

* Create privilege_escalation_make_token_local.toml

* Update privilege_escalation_make_token_local.toml

* Update privilege_escalation_make_token_local.toml
---
 ...privilege_escalation_make_token_local.toml | 73 +++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 rules/windows/privilege_escalation_make_token_local.toml

diff --git a/rules/windows/privilege_escalation_make_token_local.toml b/rules/windows/privilege_escalation_make_token_local.toml
new file mode 100644
index 000000000..51154ffc7
--- /dev/null
+++ b/rules/windows/privilege_escalation_make_token_local.toml
@@ -0,0 +1,73 @@
+[metadata]
+creation_date = "2023/12/04"
+integration = ["system", "windows"]
+maturity = "production"
+min_stack_comments = "New fields added: required_fields, related_integrations, setup"
+min_stack_version = "8.3.0"
+updated_date = "2023/12/04"
+
+[rule]
+author = ["Elastic"]
+description = """
+Identifies interactive logon attempt with alternate credentials and by an unusual process. Adversaries may 
+create a new token to escalate privileges and bypass access controls.
+"""
+from = "now-9m"
+index = ["winlogbeat-*", "logs-system.*", "logs-windows.*"]
+language = "eql"
+license = "Elastic License v2"
+name = "Interactive Logon by an Unusual Process"
+references = ["https://attack.mitre.org/techniques/T1134/002/"]
+risk_score = 73
+rule_id = "61766ef9-48a5-4247-ad74-3349de7eb2ad"
+setup = """
+
+Audit event 4624 is needed to trigger this rule.
+
+If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2,
+events will not define `event.ingested` and default fallback for EQL rules was not added until version 8.2.
+Hence for this rule to work effectively, users will need to add a custom ingest pipeline to populate
+`event.ingested` to @timestamp.
+For more details on adding a custom ingest pipeline refer - https://www.elastic.co/guide/en/fleet/current/data-streams-pipeline-tutorial.html
+"""
+severity = "high"
+tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Privilege Escalation"]
+timestamp_override = "event.ingested"
+type = "eql"
+
+query = '''
+authentication where 
+ host.os.type : "windows" and winlog.event_data.LogonProcessName : "Advapi*" and 
+ winlog.logon.type == "Interactive" and winlog.event_data.SubjectUserSid : ("S-1-5-21*", "S-1-12-*") and 
+ winlog.event_data.TargetUserSid : ("S-1-5-21*", "S-1-12-*")  and 
+ not startswith~(winlog.event_data.SubjectUserSid, winlog.event_data.TargetUserSid) and 
+ not process.executable : 
+            ("?:\\Windows\\System32\\winlogon.exe", 
+             "?:\\Windows\\System32\\wininit.exe", 
+             "?:\\Program Files\\Okta\\Okta Verify\\OktaVerify.exe", 
+             "?:\\Program Files (x86)\\Okta\\Okta Verify\\OktaVerify.exe")
+'''
+
+
+[[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 = "T1134.002"
+name = "Create Process with Token"
+reference = "https://attack.mitre.org/techniques/T1134/002/"
+
+[[rule.threat.technique.subtechnique]]
+id = "T1134.003"
+name = "Make and Impersonate Token"
+reference = "https://attack.mitre.org/techniques/T1134/003/"
+
+
+
+[rule.threat.tactic]
+id = "TA0004"
+name = "Privilege Escalation"
+reference = "https://attack.mitre.org/tactics/TA0004/"