From 53db78fcccb1c5caae61ab019f60bbabeaa52ad4 Mon Sep 17 00:00:00 2001
From: Samirbous <64742097+Samirbous@users.noreply.github.com>
Date: Mon, 8 Feb 2021 22:34:54 +0100
Subject: [PATCH] [New Rule] Lateral Movement via Kerberos using Bifrost
 Console (#843)

* [New Rule] Lateral Movement via Kerberos using Bifrost Console

* adjusted kql for perf

* mitre techniques order

* added two args

* Update lateral_movement_credential_access_kerberos_bifrostconsole.toml

* Update rules/macos/lateral_movement_credential_access_kerberos_bifrostconsole.toml

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

* Update rules/macos/lateral_movement_credential_access_kerberos_bifrostconsole.toml

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

* Update rules/macos/lateral_movement_credential_access_kerberos_bifrostconsole.toml

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

* Update rules/macos/lateral_movement_credential_access_kerberos_bifrostconsole.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>
---
 ...ential_access_kerberos_bifrostconsole.toml | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 rules/macos/lateral_movement_credential_access_kerberos_bifrostconsole.toml

diff --git a/rules/macos/lateral_movement_credential_access_kerberos_bifrostconsole.toml b/rules/macos/lateral_movement_credential_access_kerberos_bifrostconsole.toml
new file mode 100644
index 000000000..68341786b
--- /dev/null
+++ b/rules/macos/lateral_movement_credential_access_kerberos_bifrostconsole.toml
@@ -0,0 +1,55 @@
+[metadata]
+creation_date = "2020/01/12"
+maturity = "production"
+updated_date = "2020/01/12"
+
+[rule]
+author = ["Elastic"]
+description = """
+Identifies use of Bifrost, a known macOS Kerberos pentesting tool, which can be used to dump cached Kerberos
+tickets or attempt unauthorized authentication techniques such as pass-the-ticket/hash and kerberoasting.
+"""
+from = "now-9m"
+index = ["auditbeat-*", "logs-endpoint.events.*"]
+language = "kuery"
+license = "Elastic License"
+name = "Potential Kerberos Attack via Bifrost"
+references = ["https://github.com/its-a-feature/bifrost"]
+risk_score = 73
+rule_id = "16904215-2c95-4ac8-bf5c-12354e047192"
+severity = "high"
+tags = ["Elastic", "Host", "macOS", "Threat Detection", "Credential Access", "Lateral Movement"]
+type = "query"
+
+query = '''
+event.category:process and event.type:start and 
+ process.args:("-action" and ("-kerberoast" or askhash or asktgs or asktgt or s4u or ("-ticket" and ptt) or (dump and (tickets or keytab))))
+'''
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1550"
+name = "Use Alternate Authentication Material"
+reference = "https://attack.mitre.org/techniques/T1550/"
+[[rule.threat.technique.subtechnique]]
+id = "T1550.003"
+name = "Pass the Ticket"
+reference = "https://attack.mitre.org/techniques/T1550/003/"
+
+[rule.threat.tactic]
+id = "TA0008"
+name = "Lateral Movement"
+reference = "https://attack.mitre.org/tactics/TA0008/"
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1558"
+name = "Steal or Forge Kerberos Tickets"
+reference = "https://attack.mitre.org/techniques/T1558/"
+
+
+[rule.threat.tactic]
+id = "TA0006"
+name = "Credential Access"
+reference = "https://attack.mitre.org/tactics/TA0006/"