Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add meltedinhex/analyst-ai-pack --skill hunting-unusual-outbound-connectionsgit clone --depth 1 https://github.com/meltedinhex/analyst-ai-packWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/hunting-unusual-outbound-connections)<a href="https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/hunting-unusual-outbound-connections"><img src="https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/hunting-unusual-outbound-connections/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/hunting-unusual-outbound-connections"><img src="https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/hunting-unusual-outbound-connections.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00067 | $0.00662 |
| Opus 5 | $0.00034 | $0.00331 |
| Sonnet 5 | $0.00013 | $0.00132 |
| Haiku 4.5 | $0.00007 | $0.00066 |
Grade A, and why
hunting-unusual-outbound-connections scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Hunting Unusual Outbound Connections
When to Use
- You have connection/flow telemetry (Sysmon EID 3, firewall, Zeek conn) and want to surface anomalous egress: direct-to-IP, non-standard ports, rare destinations, and large uploads.
- You are hunting C2 and exfiltration channels.
Do not use this to block on raw destination novelty alone — many new destinations are benign. Combine signals (port + process + egress ratio) before alerting.
Prerequisites
- Outbound connection telemetry with destination IP/port, process, and (ideally) byte counts.
Workflow
Step 1: Score outbound connections
python scripts/analyst.py hunt conns.csv
Flags direct-to-IP (no domain), uncommon ports (not 80/443/53/...), high sent:received byte ratio
(possible exfil), and connections from unexpected processes (e.g., notepad.exe egressing).
Step 2: Rank destinations by rarity
Aggregate per-destination connection counts to surface low-prevalence endpoints.
Step 3: Confirm
Investigate top-scoring connections; corroborate with reputation and process context.
Step 4: Operationalize
Tune thresholds and write a detection for the strongest combined signals.
Validation
- Direct-to-IP and non-standard-port connections are flagged.
- High egress-ratio connections are surfaced for exfil review.
- Unexpected-process egress is identified.
Pitfalls
- CDNs and cloud services producing many benign direct-IP/new destinations.
- Standard ports (443) used by C2 — port alone is insufficient.
- Asymmetric-but-benign traffic (backups, uploads) inflating egress ratio.
References
- See
references/api-reference.mdfor the hunter. - ATT&CK T1048 and T1571 (linked in frontmatter).
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 86 lines · 67 tokens per session scan A 7e02aa96d277
hunting-unusual-outbound-connections is a skill published in the GitHub repository meltedinhex/analyst-ai-pack (22 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 67 tokens to every session and 662 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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