:warning: THIS IS A EXPERIMENTAL DETECTION

This detection has been marked experimental by the Splunk Threat Research team. This means we have not been able to test, simulate, or build datasets for this detection. Use at your own risk. This analytic is NOT supported.

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Description

By enabling IPv6 First Hop Security as a Layer 2 Security measure on the organization's network devices, we will be able to detect various attacks such as packet forging in the Infrastructure.

  • Type: TTP
  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud

  • Last Updated: 2020-10-28
  • Author: Mikael Bjerkeland, Splunk
  • ID: c3be767e-7959-44c5-8976-0e9c12a91ad2

Annotations

ATT&CK

ATT&CK

ID Technique Tactic
T1200 Hardware Additions Initial Access
T1498 Network Denial of Service Impact
T1557 Adversary-in-the-Middle Credential Access, Collection
T1557.002 ARP Cache Poisoning Credential Access, Collection
Kill Chain Phase
  • Reconnaissance
  • Delivery
  • Actions on Objectives
NIST
  • ID.AM
  • PR.DS
CIS20
  • CIS 1
  • CIS 11
CVE
1
2
3
4
5
6
7
8
`cisco_networks` facility="SISF" mnemonic IN ("IP_THEFT","MAC_THEFT","MAC_AND_IP_THEFT","PAK_DROP") 
| eval src_interface=src_int_prefix_long+src_int_suffix 
| eval dest_interface=dest_int_prefix_long+dest_int_suffix 
| stats min(_time) AS firstTime max(_time) AS lastTime values(src_mac) AS src_mac values(src_vlan) AS src_vlan values(mnemonic) AS mnemonic values(vendor_explanation) AS vendor_explanation values(src_ip) AS src_ip values(dest_ip) AS dest_ip values(dest_interface) AS dest_interface values(action) AS action count BY host src_interface 
| table host src_interface dest_interface src_mac src_ip dest_ip src_vlan mnemonic vendor_explanation action count 
| `security_content_ctime(firstTime)` 
|`security_content_ctime(lastTime)` 
| `detect_ipv6_network_infrastructure_threats_filter`

Macros

The SPL above uses the following Macros:

:information_source: detect_ipv6_network_infrastructure_threats_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.

Required fields

List of fields required to use this analytic.

  • _time
  • facility
  • mnemonic
  • src_int_prefix_long
  • src_int_suffix
  • dest_int_prefix_long
  • dest_int_suffix
  • src_mac
  • src_vlan
  • vendor_explanation
  • action

How To Implement

This search uses a standard SPL query on logs from Cisco Network devices. The network devices must be configured with one or more First Hop Security measures such as RA Guard, DHCP Guard and/or device tracking. See References for more information. The search also requires that the Cisco Networks Add-on for Splunk (https://splunkbase.splunk.com/app/1467) is used to parse the logs from the Cisco network devices.

Known False Positives

None currently known

Associated Analytic Story

RBA

Risk Score Impact Confidence Message
25.0 50 50 tbd

:information_source: The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.

Reference

Test Dataset

Replay any dataset to Splunk Enterprise by using our replay.py tool or the UI. Alternatively you can replay a dataset into a Splunk Attack Range

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