From 00cb3cd69d9d17d7d536d9b9b9c293085f818dfd Mon Sep 17 00:00:00 2001
From: patel-bhavin <bhavin.j.patel91@gmail.com>
Date: Mon, 27 Sep 2021 14:04:21 -0700
Subject: [PATCH] adding default

---
 .../remcos_client_registry_install_entry.yml  | 49 +++++++++++++++++++
 ...cos_client_registry_install_entry.test.yml | 12 +++++
 2 files changed, 61 insertions(+)
 create mode 100644 detections/endpoint/remcos_client_registry_install_entry.yml
 create mode 100644 tests/endpoint/remcos_client_registry_install_entry.test.yml

diff --git a/detections/endpoint/remcos_client_registry_install_entry.yml b/detections/endpoint/remcos_client_registry_install_entry.yml
new file mode 100644
index 0000000000..fdb4ca0e23
--- /dev/null
+++ b/detections/endpoint/remcos_client_registry_install_entry.yml
@@ -0,0 +1,49 @@
+name: Remcos client registry install entry
+id: f2a1615a-1d63-11ec-97d2-acde48001122
+version: 1
+date: '2021-09-24'
+author: Rod Soto
+type: TTP
+datamodel:
+- Endpoint
+description: This search detects registry key license at host where Remcos RAT agent is installed.
+search: '| tstats `security_content_summariesonly` count values(Registry.registry_key_name)
+  as registry_key_name values(Registry.registry_path) as registry_path min(_time)
+  as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Registry where (Registry.registry_path=*\\Software\\Remcos*)|
+  `security_content_ctime(lastTime)` | `security_content_ctime(firstTime)` | `drop_dm_object_name(Registry)` | `remcos_client_registry_install_entry_filter`'
+how_to_implement: In order to successfully implement this search, you need to be ingesting
+  logs with the TargetObject registry key, registry Details from your endpoints.
+  If you are using Sysmon, you must have at least version 6.0.4 of the Sysmon TA.
+known_false_positives: unknown
+references:
+-  https://attack.mitre.org/software/S0332/
+tags:
+  analytic_story:
+  - Remcos
+  dataset:
+  - https://github.com/splunk/attack_data/blob/master/datasets/malware/remcos/remcos_panel_client/agent_license.log
+  kill_chain_phases:
+  - Exploitation
+  mitre_attack_id:
+  - T1112
+  product:
+  - Splunk Enterprise
+  - Splunk Enterprise Security
+  - Splunk Cloud
+  required_fields:
+  - _time
+  - Registry.registry_path
+  - Registry.registry_key_name
+  security_domain: endpoint
+  impact: 90
+  confidence: 100
+  # (impact * confidence)/100
+  risk_score: 90
+  context:
+  message: A registry entry $registry_path$ with registry value $registry_key_name$
+     related to Remcos RAT in host $dest$
+  observable:
+    name: dest
+    type: Hostname
+    role:
+    - Victim
diff --git a/tests/endpoint/remcos_client_registry_install_entry.test.yml b/tests/endpoint/remcos_client_registry_install_entry.test.yml
new file mode 100644
index 0000000000..03b12c0bae
--- /dev/null
+++ b/tests/endpoint/remcos_client_registry_install_entry.test.yml
@@ -0,0 +1,12 @@
+name: Remcos client registry install entry Unit Test
+tests:
+- name: Remcos client registry install entry
+  file: endpoint/remcos_client_registry_install_entry.yml
+  pass_condition: '| stats count | where count > 0'
+  earliest_time: '-15d'
+  latest_time: 'now'
+  attack_data:
+  - file_name: agent_license.log
+    data: https://github.com/splunk/attack_data/blob/master/datasets/malware/remcos/remcos_panel_client/agent_license.log
+    source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
+    sourcetype: xmlwineventlog
\ No newline at end of file