From 7775515b55020bfbe7e44e8fdbcdcf6227743369 Mon Sep 17 00:00:00 2001
From: Samirbous <64742097+Samirbous@users.noreply.github.com>
Date: Fri, 4 Dec 2020 17:05:30 +0100
Subject: [PATCH] [New Rule] Privilege Escalation via Named Pipe Impersonation
 (#605)

* [New Rule] Privilege Escalation via Named Pipe Impersonation

* added a reference url

* fixed PS OFN

* Update rules/windows/privilege_escalation_named_pipe_impersonation.toml

Co-authored-by: Andrew Pease <7442091+peasead@users.noreply.github.com>

* Update rules/windows/privilege_escalation_named_pipe_impersonation.toml

Co-authored-by: Andrew Pease <7442091+peasead@users.noreply.github.com>

* eql syntax

* ecs_version

* Update rules/windows/privilege_escalation_named_pipe_impersonation.toml

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

* Update rules/windows/privilege_escalation_named_pipe_impersonation.toml

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

Co-authored-by: Andrew Pease <7442091+peasead@users.noreply.github.com>
Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com>
---
 ...e_escalation_named_pipe_impersonation.toml | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 rules/windows/privilege_escalation_named_pipe_impersonation.toml

diff --git a/rules/windows/privilege_escalation_named_pipe_impersonation.toml b/rules/windows/privilege_escalation_named_pipe_impersonation.toml
new file mode 100644
index 000000000..f4d1f09c9
--- /dev/null
+++ b/rules/windows/privilege_escalation_named_pipe_impersonation.toml
@@ -0,0 +1,40 @@
+[metadata]
+creation_date = "2020/11/23"
+maturity = "production"
+updated_date = "2020/11/23"
+
+[rule]
+author = ["Elastic"]
+description = """
+Identifies a privilege escalation attempt via named pipe impersonation. An adversary may abuse this technique by utilizing a framework such Metasploit's meterpreter getsystem command.
+"""
+index = ["winlogbeat-*", "logs-endpoint.events.*"]
+language = "eql"
+license = "Elastic License"
+name = "Privilege Escalation via Named Pipe Impersonation"
+references = ["https://www.ired.team/offensive-security/privilege-escalation/windows-namedpipes-privilege-escalation"]
+risk_score = 73
+rule_id = "3ecbdc9e-e4f2-43fa-8cca-63802125e582"
+severity = "high"
+tags = ["Elastic", "Host", "Windows", "Threat Detection", "Privilege Escalation"]
+type = "eql"
+
+query = '''
+process where event.type in ("start", "process_started") and
+ process.pe.original_file_name in ("Cmd.Exe", "PowerShell.EXE") and 
+ process.args : "echo" and process.args : ">" and process.args : "\\\\.\\pipe\\*"
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1134"
+name = "Access Token Manipulation"
+reference = "https://attack.mitre.org/techniques/T1134/"
+
+
+[rule.threat.tactic]
+id = "TA0004"
+name = "Privilege Escalation"
+reference = "https://attack.mitre.org/tactics/TA0004/"