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sica-fondt/knowledge/cyber-skills/skills/detecting-kerberoasting-attacks/references/api-reference.md
Claude 24f816b6a3
Consolidate 22 sibling repos into layered organism structure 
Place useful parts of the surrounding repos into sica-fondt by layer, per the
body model (Ada = membrane; brain/endocrine/capabilities/knowledge non-Ada):

- brain/        LLM reasoning + providers (dapr, hermes, MoMoA)
- capabilities/ REPRAG sidecars: hermes tools/skills, dapr tools, parallel
                dispatch, A51 channels, and the OSINT cluster
- knowledge/    LORAG corpus: 754 cyber-skills, agency personas, secure-coding,
                MITRE ATT&CK data
- reference/    defensive threat-reference (C3, shhbruh doc) + AdaYaml parser

License handling: AGPL sources (worldosint, advanced_evolution, mercury,
Reticulum) and GPL DeTTECT are SPEC-only clean-room/port descriptions — no
copyleft code copied. MIT/Apache/data parts copied as working trees.

Safety: shhbruh escape/persistence material and C3 covert-C2 kept as reference
only, not wired into the running organism. See CONSOLIDATION.md.

https://claude.ai/code/session_01UehUqEXXJJCsHoA4voCU5c
2026-06-10 06:53:01 +00:00

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API Reference: Detecting Kerberoasting Attacks

python-evtx Library

from Evtx.Evtx import FileHeader
with open("Security.evtx", "rb") as f:
    fh = FileHeader(f)
    for record in fh.records():
        xml_string = record.xml()

Event ID 4769 - Kerberos TGS Request

<EventData>
  <Data Name="TargetUserName">svc_sql</Data>
  <Data Name="ServiceName">MSSQLSvc/db01.corp.local:1433</Data>
  <Data Name="TicketEncryptionType">0x17</Data>
  <Data Name="TicketOptions">0x40810000</Data>
  <Data Name="IpAddress">::ffff:10.0.0.50</Data>
  <Data Name="Status">0x0</Data>
</EventData>

Encryption Type Values

Hex Type Risk
0x17 RC4-HMAC Kerberoasting indicator
0x18 RC4-HMAC-EXP Kerberoasting indicator
0x11 AES128-CTS-HMAC-SHA1 Normal
0x12 AES256-CTS-HMAC-SHA1 Normal

Detection Logic

  1. Filter Event 4769 where TicketEncryptionType = 0x17 (RC4)
  2. Exclude machine accounts (ServiceName ending in $)
  3. Exclude krbtgt service
  4. Alert on high-volume TGS from single source (>10 unique SPNs in 5 min)
  5. Correlate with Event 4624 for source attribution

Event ID 4624 - Logon Event (Correlation)

<Data Name="TargetUserName">attacker_user</Data>
<Data Name="LogonType">3</Data>
<Data Name="IpAddress">10.0.0.50</Data>
<Data Name="WorkstationName">WORKSTATION1</Data>

MITRE ATT&CK Mapping

  • T1558.003 - Kerberoasting
  • T1558 - Steal or Forge Kerberos Tickets