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Anthropic-Cybersecurity-Skills/skills/detecting-lateral-movement-with-splunk/references/api-reference.md
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mukul975 27c6414ca5 Add folder anatomy (scripts/agent.py + references/api-reference.md) for 648 cybersecurity skills
Complete skill folder anatomy across all cybersecurity skills:
- scripts/agent.py: 80-150 line Python agents using real libraries (impacket,
  boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.)
- references/api-reference.md: real API documentation with method signatures
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2026-03-10 21:02:12 +01:00

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API Reference: Detecting Lateral Movement with Splunk

Key Lateral Movement Techniques

Technique MITRE ID Event Source
Pass-the-Hash T1550.002 Event 4624 Logon_Type=3 NTLM
PSExec T1569.002 Sysmon Event 1 (PSEXESVC.exe)
WMI Remote Exec T1047 Sysmon Event 1 (wmiprvse.exe)
RDP Pivoting T1021.001 Event 4624 Logon_Type=10
SMB/Admin Share T1021.002 Network logs dest_port=445
WinRM T1021.006 Sysmon Event 1 (wsmprovhost.exe)

Splunk SPL Syntax

# Pass-the-Hash detection
index=wineventlog EventCode=4624 Logon_Type=3
| where Authentication_Package="NTLM"
| stats dc(Computer) as targets by Source_Network_Address
| where targets > 3

# PSExec detection
index=sysmon EventCode=1
| where ParentImage="*\\services.exe" AND Image="*\\PSEXESVC.exe"

splunklib Python SDK

import splunklib.client as client
import splunklib.results as results

service = client.connect(host="splunk", port=8089, token="...")
job = service.jobs.create("search index=wineventlog EventCode=4624")
for result in results.JSONResultsReader(job.results(output_mode="json")):
    print(result)

Windows Logon Types

Type Description
2 Interactive (console)
3 Network (SMB, PSExec)
7 Unlock
10 RemoteInteractive (RDP)

CLI Usage

python agent.py --generate-queries
python agent.py --generate-queries --techniques pass_the_hash psexec_execution
python agent.py --parse-results splunk_output.json