From 53484de98626a5ea8202fd0f7f799c484aeb2664 Mon Sep 17 00:00:00 2001
From: Samirbous <64742097+Samirbous@users.noreply.github.com>
Date: Tue, 29 Sep 2020 10:54:24 +0200
Subject: [PATCH] [New Rule] - Creation of a new GPO Scheduled Task or Service
 (#126)

* [New Rule] - Creation of a new GPO Scheduled Task or Service

* Update lateral_movement_gpo_schtask_service_creation.toml

* Update lateral_movement_gpo_schtask_service_creation.toml

* Update rules/windows/lateral_movement_gpo_schtask_service_creation.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/windows/lateral_movement_gpo_schtask_service_creation.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/windows/lateral_movement_gpo_schtask_service_creation.toml

Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com>

* Update rules/windows/lateral_movement_gpo_schtask_service_creation.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update lateral_movement_gpo_schtask_service_creation.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com>
---
 ...movement_gpo_schtask_service_creation.toml | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 rules/windows/lateral_movement_gpo_schtask_service_creation.toml

diff --git a/rules/windows/lateral_movement_gpo_schtask_service_creation.toml b/rules/windows/lateral_movement_gpo_schtask_service_creation.toml
new file mode 100644
index 000000000..e443bd60e
--- /dev/null
+++ b/rules/windows/lateral_movement_gpo_schtask_service_creation.toml
@@ -0,0 +1,56 @@
+[metadata]
+creation_date = "2020/08/13"
+ecs_version = ["1.6.0"]
+maturity = "production"
+updated_date = "2020/08/13"
+
+[rule]
+author = ["Elastic"]
+description = """
+Detects the creation or modification of a new Group Policy based scheduled task or service. These methods are used for legitimate system
+administration, but can also be abused by an attacker with domain admin permissions to execute a malicious payload remotely on all
+or a subset of the domain joined machines. 
+"""
+from = "now-9m"
+index = ["winlogbeat-*", "logs-endpoint.events.*"]
+language = "kuery"
+license = "Elastic License"
+name = "Creation or Modification of a new GPO Scheduled Task or Service"
+risk_score = 21
+rule_id = "c0429aa8-9974-42da-bfb6-53a0a515a145"
+severity = "low"
+tags = ["Elastic", "Windows"]
+type = "query"
+
+query = '''
+event.category:file and not event.type:deletion and
+  file.path:(C\:\\Windows\\SYSVOL\\domain\\Policies\\*\\MACHINE\\Preferences\\ScheduledTasks\\ScheduledTasks.xml or
+             C\:\\Windows\\SYSVOL\\domain\\Policies\\*\\MACHINE\\Preferences\\Preferences\\Services\\Services.xml) and
+  not process.name:dfsrs.exe
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1053"
+name = "Scheduled Task/Job"
+reference = "https://attack.mitre.org/techniques/T1053/"
+
+
+[rule.threat.tactic]
+id = "TA0003"
+name = "Persistence"
+reference = "https://attack.mitre.org/tactics/TA0003/"
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1021"
+name = "Remote Services"
+reference = "https://attack.mitre.org/techniques/T1021/"
+
+
+[rule.threat.tactic]
+id = "TA0002"
+name = "Execution"
+reference = "https://attack.mitre.org/tactics/TA0002/"