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

1.5 KiB

API Reference: Detecting DNS Exfiltration

Shannon Entropy Calculation

import math
from collections import Counter

def entropy(text):
    freq = Counter(text)
    length = len(text)
    return -sum((c/length) * math.log2(c/length) for c in freq.values())

# Normal subdomain: entropy ~2.5-3.0
# Encoded data: entropy >3.5-4.0

Detection Thresholds

Metric Normal Suspicious
Subdomain entropy < 3.0 > 3.5
Subdomain length < 20 chars > 40 chars
TXT record ratio < 5% > 30%
Queries to single domain < 50/hr > 100/hr

Zeek dns.log Fields

#fields ts uid id.orig_h id.orig_p id.resp_h id.resp_p proto trans_id
        query qclass qclass_name qtype qtype_name rcode rcode_name

DNS Tunneling Tools

Tool Protocol Indicators
iodine TXT/NULL/CNAME Encoded subdomains, high volume
dnscat2 TXT/CNAME Base32/Base64 subdomains
dns2tcp TXT Long TXT responses

Splunk SPL Detection

index=dns
| eval subdomain=replace(query, "\.[^.]+\.[^.]+$", "")
| eval entropy=...
| where len(subdomain) > 40 AND query_count > 100
| stats count by query, src_ip

Suricata DNS Rules

alert dns any any -> any 53 (msg:"DNS Tunnel - Long Query"; \
  dns.query; content:"."; offset:50; sid:2000001;)

CLI Usage

python agent.py --dns-log dns.log --format zeek
python agent.py --dns-log dns.log --entropy-threshold 3.8 --length-threshold 50