From 52c9d19cc480fa74dcb63b2b4197b071c8586cb2 Mon Sep 17 00:00:00 2001
From: Michael Haag <5632822+MHaggis@users.noreply.github.com>
Date: Mon, 20 Mar 2023 14:46:12 -0600
Subject: [PATCH] every haag everywhere all at once

---
 .../windows_lateral_tool_transfer_remcom.yml  | 79 +++++++++++++++++++
 ...dows_lateral_tool_transfer_remcom.test.yml | 13 +++
 2 files changed, 92 insertions(+)
 create mode 100644 detections/endpoint/windows_lateral_tool_transfer_remcom.yml
 create mode 100644 tests/endpoint/windows_lateral_tool_transfer_remcom.test.yml

diff --git a/detections/endpoint/windows_lateral_tool_transfer_remcom.yml b/detections/endpoint/windows_lateral_tool_transfer_remcom.yml
new file mode 100644
index 0000000000..09043be3ed
--- /dev/null
+++ b/detections/endpoint/windows_lateral_tool_transfer_remcom.yml
@@ -0,0 +1,79 @@
+name: Windows Lateral Tool Transfer RemCom
+id: e373a840-5bdc-47ef-b2fd-9cc7aaf387f0
+version: 1
+date: '2023-03-20'
+author: Michael Haag, Splunk
+type: TTP
+datamodel:
+- Endpoint
+description: This analytic identifies the use of RemCom.exe - The open source psexec. This utility provides the ability to move laterally and run scripts or commands remotely.
+search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
+  as lastTime from datamodel=Endpoint.Processes where (Processes.process_name=remcom.exe OR Processes.original_file_name=RemCom.exe) Processes.process="*\\*" Processes.process IN ("*/user:*", "*/pwd:*")
+   by Processes.dest Processes.user Processes.parent_process_name Processes.process_name Processes.original_file_name
+  Processes.process Processes.process_id Processes.parent_process_id
+  | `drop_dm_object_name(Processes)` 
+  | `security_content_ctime(firstTime)`
+  | `security_content_ctime(lastTime)` | `windows_lateral_tool_transfer_remcom_filter`'
+how_to_implement: To successfully implement this search you need to be ingesting information on process that include the name of the process responsible for the changes from your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition, confirm the latest CIM App 4.20 or higher is installed and the latest TA for the endpoint product.
+known_false_positives: False positives may be present based on Administrative use. Filter as needed.
+references:
+  - https://www.crowdstrike.com/blog/bears-midst-intrusion-democratic-national-committee/
+  - https://github.com/kavika13/RemCom
+tags:
+  analytic_story:
+  - Active Directory Discovery
+  asset_type: Endpoint
+  cis20:
+  - CIS 3
+  - CIS 5
+  - CIS 16
+  confidence: 50
+  context:
+  - Source:Endpoint
+  - Stage:Defense Evasion
+  dataset:
+  - https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1570/remcom/remcom_windows-sysmon.log
+  impact: 80
+  kill_chain_phases:
+  - Installation
+  message: An instance of $parent_process_name$ spawning $process_name$ was identified on endpoint $dest$ by user $user$ attempting to move laterally.
+  mitre_attack_id:
+  - T1570
+  nist:
+  - DE.CM
+  observable:
+  - name: user
+    type: User
+    role:
+    - Victim
+  - name: dest
+    type: Hostname
+    role:
+    - Victim
+  - name: parent_process_name
+    type: Process
+    role:
+    - Parent Process
+  - name: process_name
+    type: Process
+    role:
+    - Child Process
+  product:
+  - Splunk Enterprise
+  - Splunk Enterprise Security
+  - Splunk Cloud
+  required_fields:
+  - _time
+  - Processes.dest
+  - Processes.user
+  - Processes.parent_process_name #parent process name
+  - Processes.parent_process #parent cmdline
+  - Processes.original_file_name
+  - Processes.process_name #process name
+  - Processes.process #process cmdline
+  - Processes.process_id
+  - Processes.parent_process_path
+  - Processes.process_path
+  - Processes.parent_process_id
+  risk_score: 40
+  security_domain: endpoint
\ No newline at end of file
diff --git a/tests/endpoint/windows_lateral_tool_transfer_remcom.test.yml b/tests/endpoint/windows_lateral_tool_transfer_remcom.test.yml
new file mode 100644
index 0000000000..e2a3f3d374
--- /dev/null
+++ b/tests/endpoint/windows_lateral_tool_transfer_remcom.test.yml
@@ -0,0 +1,13 @@
+name: Windows Lateral Tool Transfer RemCom Unit Test
+tests:
+- name: Windows Lateral Tool Transfer RemCom
+  file: endpoint/windows_lateral_tool_transfer_remcom.yml
+  pass_condition: '| stats count | where count > 0'
+  earliest_time: -24h
+  latest_time: now
+  attack_data:
+  - file_name: remcom_windows-sysmon.log
+    data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1570/remcom/remcom_windows-sysmon.log
+    source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
+    sourcetype: xmlwineventlog
+    update_timestamp: true