From 70fc7ff58e7250010fd8150f7fc4ef4553c29e9f Mon Sep 17 00:00:00 2001
From: mvelazco <mauricio.velazco@gmail.com>
Date: Mon, 27 Mar 2023 15:26:28 -0400
Subject: [PATCH] adding detection

---
 ...tive_shares_accessed_on_multiple_hosts.yml |  4 +-
 ...ial_privileged_logon_on_multiple_hosts.yml | 65 +++++++++++++++++++
 ...rivileged_logon_on_multiple_hosts.test.yml | 12 ++++
 3 files changed, 79 insertions(+), 2 deletions(-)
 create mode 100644 detections/endpoint/windows_special_privileged_logon_on_multiple_hosts.yml
 create mode 100644 tests/endpoint/windows_special_privileged_logon_on_multiple_hosts.test.yml

diff --git a/detections/endpoint/windows_administrative_shares_accessed_on_multiple_hosts.yml b/detections/endpoint/windows_administrative_shares_accessed_on_multiple_hosts.yml
index b4ca012384..f14e96e765 100644
--- a/detections/endpoint/windows_administrative_shares_accessed_on_multiple_hosts.yml
+++ b/detections/endpoint/windows_administrative_shares_accessed_on_multiple_hosts.yml
@@ -6,9 +6,9 @@ author: Mauricio Velazco, Splunk
 type: TTP
 datamodel: []
 description: UPDATE_DESCRIPTION
-search: ' `wineventlog_security` EventCode=5140 (ShareName="\\\\*\\ADMIN$" OR ShareName="\\\\*\\IPC$" OR ShareName="\\\\*\\C$")
+search: ' `wineventlog_security` EventCode=5140 OR EventCode=5145 (ShareName="\\\\*\\ADMIN$" OR ShareName="\\\\*\\IPC$" OR ShareName="\\\\*\\C$")
   | bucket span=5m _time
-  | stats dc(Computer) AS unique_targets values(Computer) as host_targets by _time, IpAddress, SubjectUserName, ShareName
+  | stats dc(Computer) AS unique_targets values(Computer) as host_targets values(ShareName) as shares by _time, IpAddress, SubjectUserName, EventCode
   | where unique_targets > 40
   | `windows_administrative_shares_accessed_on_multiple_hosts_filter`'
 how_to_implement: UPDATE_HOW_TO_IMPLEMENT
diff --git a/detections/endpoint/windows_special_privileged_logon_on_multiple_hosts.yml b/detections/endpoint/windows_special_privileged_logon_on_multiple_hosts.yml
new file mode 100644
index 0000000000..807a5cd19e
--- /dev/null
+++ b/detections/endpoint/windows_special_privileged_logon_on_multiple_hosts.yml
@@ -0,0 +1,65 @@
+name: Windows Special Privileged Logon On Multiple Hosts
+id: 4c461f5a-c2cc-4e86-b132-c262fc9edca7
+version: 1
+date: '2023-03-27'
+author: Mauricio Velazco, Splunk
+type: TTP
+datamodel: []
+description: UPDATE_DESCRIPTION
+search: ' `wineventlog_security` EventCode=4672 AND NOT(Caller_User_Name IN ("DWM-1","DWM-2","DWM-3","LOCAL SERVICE","NETWORK SERVICE","SYSTEM","*$"))
+  | bucket span=5m _time
+  | stats dc(Computer) AS unique_targets values(Computer) as host_targets values(PrivilegeList) as privileges by _time, Caller_User_Name
+  | where unique_targets > 40
+  | `windows_special_privileged_logon_on_multiple_hosts_filter`'
+how_to_implement: UPDATE_HOW_TO_IMPLEMENT
+known_false_positives: UPDATE_KNOWN_FALSE_POSITIVES
+references:
+- REFERENCE
+tags:
+  analytic_story:
+  - Active Directory Privilege Escalation
+  - Active Directory Lateral Movement
+  asset_type: Endpoint
+  cis20:
+  - CIS 3
+  - CIS 5
+  - CIS 16
+  confidence: 80
+  context:
+  - Source:Endpoint
+  - Stage:Privilege Escalation
+  - Stage:Lateral Movement
+  dataset:
+  - https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1078/special_logon_on_mulitple_hosts/windows-security.log
+  impact: 80
+  kill_chain_phases:
+  - Reconnaissance
+  - Exploitation
+  message: UPDATE message
+  mitre_attack_id:
+  - T1087
+  - T1021.002
+  - T1135
+  nist:
+  - DE.CM
+  observable:
+  - name: Computer
+    type: Hostname
+    role:
+    - Victim
+  - name: Caller_User_Name
+    type: User
+    role:
+    - Attacker
+  product:
+  - Splunk Enterprise
+  - Splunk Enterprise Security
+  - Splunk Cloud
+  required_fields:
+  - _time
+  - EventCode
+  - Caller_User_Name
+  - Computer
+  - PrivilegeList
+  risk_score: 64
+  security_domain: endpoint
diff --git a/tests/endpoint/windows_special_privileged_logon_on_multiple_hosts.test.yml b/tests/endpoint/windows_special_privileged_logon_on_multiple_hosts.test.yml
new file mode 100644
index 0000000000..a922c7b9ca
--- /dev/null
+++ b/tests/endpoint/windows_special_privileged_logon_on_multiple_hosts.test.yml
@@ -0,0 +1,12 @@
+name: Windows Special Privileged Logon On Multiple Hosts Unit Test
+tests:
+- name: Windows Special Privileged Logon On Multiple Hosts
+  file: endpoint/windows_special_privileged_logon_on_multiple_hosts.yml
+  pass_condition: '| stats count | where count > 0'
+  earliest_time: -24h
+  latest_time: now
+  attack_data:
+  - file_name: windows-security.log
+    data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1078/special_logon_on_mulitple_hosts/windows-security.log
+    source: XmlWinEventLog:Security
+    sourcetype: XmlWinEventLog