From b4cb953aa4fcb8cef14c9ddda4726b24937683d6 Mon Sep 17 00:00:00 2001
From: Samirbous <64742097+Samirbous@users.noreply.github.com>
Date: Tue, 26 Jan 2021 09:07:39 +0100
Subject: [PATCH] [New Rule] Script Execution via Automator Workflows (#763)

* [New Rule] Script Execution via Automator Workflows

* Update execution_script_via_automator_workflows.toml

* Update rules/macos/execution_script_via_automator_workflows.toml

Co-authored-by: David French <56409778+threat-punter@users.noreply.github.com>

* Update rules/macos/execution_script_via_automator_workflows.toml

Co-authored-by: David French <56409778+threat-punter@users.noreply.github.com>

Co-authored-by: David French <56409778+threat-punter@users.noreply.github.com>
---
 ...cution_script_via_automator_workflows.toml | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 rules/macos/execution_script_via_automator_workflows.toml

diff --git a/rules/macos/execution_script_via_automator_workflows.toml b/rules/macos/execution_script_via_automator_workflows.toml
new file mode 100644
index 000000000..d81c79851
--- /dev/null
+++ b/rules/macos/execution_script_via_automator_workflows.toml
@@ -0,0 +1,42 @@
+[metadata]
+creation_date = "2020/12/23"
+maturity = "production"
+updated_date = "2020/12/23"
+
+[rule]
+author = ["Elastic"]
+description = """
+Identifies the execution of the Automator Workflows process followed by a network connection from it's XPC service. Adversaries may drop a custom workflow template that hosts
+malicious JavaScript for Automation (JXA) code as an alternative to using osascript.
+"""
+from = "now-9m"
+index = ["auditbeat-*", "logs-endpoint.events.*"]
+language = "eql"
+license = "Elastic License"
+name = "Suspicious Automator Workflows Execution"
+references = ["https://posts.specterops.io/persistent-jxa-66e1c3cd1cf5"]
+risk_score = 47
+rule_id = "5d9f8cfc-0d03-443e-a167-2b0597ce0965"
+severity = "medium"
+tags = ["Elastic", "Host", "macOS", "Threat Detection", "Execution"]
+type = "eql"
+
+query = '''
+sequence by host.id with maxspan=30s
+ [process where event.type in ("start", "process_started") and process.name == "automator"]
+ [network where process.name:"com.apple.automator.runner"]
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1059"
+name = "Command and Scripting Interpreter"
+reference = "https://attack.mitre.org/techniques/T1059/"
+
+
+[rule.threat.tactic]
+id = "TA0002"
+name = "Execution"
+reference = "https://attack.mitre.org/tactics/TA0002/"