Detection: Detect IPv6 Network Infrastructure Threats

EXPERIMENTAL DETECTION

This detection status is set to experimental. The Splunk Threat Research team has not yet fully tested, simulated, or built comprehensive datasets for this detection. As such, this analytic is not officially supported. If you have any questions or concerns, please reach out to us at research@splunk.com.

Updated Date: 2024-05-12 ID: c3be767e-7959-44c5-8976-0e9c12a91ad2 Author: Mikael Bjerkeland, Splunk Type: TTP Product: Splunk Enterprise Security

Description

The following analytic detects IPv6 network infrastructure threats by identifying suspicious activities such as IP and MAC address theft or packet drops. It leverages logs from Cisco network devices configured with First Hop Security measures like RA Guard and DHCP Guard. This activity is significant as it can indicate attempts to compromise network integrity and security. If confirmed malicious, attackers could manipulate network traffic, leading to potential data interception, unauthorized access, or network disruption.

Search

1`cisco_networks` facility="SISF" mnemonic IN ("IP_THEFT","MAC_THEFT","MAC_AND_IP_THEFT","PAK_DROP") 
2| eval src_interface=src_int_prefix_long+src_int_suffix 
3| eval dest_interface=dest_int_prefix_long+dest_int_suffix 
4| 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 
5| table host src_interface dest_interface src_mac src_ip dest_ip src_vlan mnemonic vendor_explanation action count 
6| `security_content_ctime(firstTime)` 
7|`security_content_ctime(lastTime)` 
8| `detect_ipv6_network_infrastructure_threats_filter`

Data Source

Name	Platform	Sourcetype	Source	Supported App
N/A	N/A	N/A	N/A	N/A

Macros Used

Name	Value
cisco_networks	`eventtype=cisco_ios`
detect_ipv6_network_infrastructure_threats_filter	`search *`

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

Annotations

- MITRE ATT&CK

+ Kill Chain Phases

+ NIST

+ CIS

- Threat Actors

ID	Technique	Tactic
T1200	Hardware Additions	Initial Access
T1498	Network Denial of Service	Impact
T1557	Adversary-in-the-Middle	Collection
T1557.002	ARP Cache Poisoning	Credential Access

KillChainPhase.ACTIONS_ON_OBJECTIVES

KillChainPhase.DELIVERY

KillChainPhase.EXPLOITAITON

NistCategory.DE_CM

Cis18Value.CIS_13

DarkVishnya

APT28

Kimsuky

Cleaver

LuminousMoth

Default Configuration

This detection is configured by default in Splunk Enterprise Security to run with the following settings:

Setting	Value
Disabled	true
Cron Schedule	`0 * * * *`
Earliest Time	`-70m@m`
Latest Time	`-10m@m`
Schedule Window	`auto`
Creates Notable	Yes
Rule Title	`%name%`
Rule Description	`%description%`
Notable Event Fields	user, dest
Creates Risk Event	True

This configuration file applies to all detections of type TTP. These detections will use Risk Based Alerting and generate Notable Events.

Implementation

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

Router and Infrastructure Security

Risk Based Analytics (RBA)

Risk Message	Risk Score	Impact	Confidence
tbd	25	50	50

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

References

Detection Testing

Test Type	Status	Dataset	Source	Sourcetype
Validation	Not Applicable	N/A	N/A	N/A
Unit	❌ Failing	N/A	`N/A`	`N/A`
Integration	❌ Failing	N/A	`N/A`	`N/A`

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

Source: GitHub | Version: 2