hunting-active-directory-attacks

hunting-active-directory-attacks is a skill for Claude Code, Codex from meltedinhex/analyst-ai-pack. It costs 86 tokens per session (761 once invoked), scanned A, original, Apache-2.0.

A security-analysis workflow for finding attacks against Active Directory, Microsoft's system for managing Windows users, computers, and permissions. It checks directory access, Kerberos ticket requests, and logins for replication abuse and forged tickets.

In plain words
What is it for?
Use it to investigate DCSync, Golden Ticket, Silver Ticket, and DCShadow activity in domain-controller telemetry.
Why use it?
Credential theft and forged authentication can give attackers broad access while resembling legitimate domain activity. Correlating several Windows event types helps expose these attacks.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to investigate DCSync, Golden Ticket, Silver Ticket, and DCShadow activity in domain-controller telemetry.

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Install with agentmods
npx agentmods add skills/meltedinhex/analyst-ai-pack/hunting-active-directory-attacks
Install

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.

Any agent
npx skills add meltedinhex/analyst-ai-pack --skill hunting-active-directory-attacks
Clone the repo
git clone --depth 1 https://github.com/meltedinhex/analyst-ai-pack

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for hunting-active-directory-attacks

README.md
[![agentmods](https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/hunting-active-directory-attacks/github.svg)](https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/hunting-active-directory-attacks)
Your own site
<a href="https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/hunting-active-directory-attacks"><img src="https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/hunting-active-directory-attacks/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.

agentmods 80×15 button for hunting-active-directory-attacks

Your own site · 80×15
<a href="https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/hunting-active-directory-attacks"><img src="https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/hunting-active-directory-attacks.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 86 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 761 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00086 $0.00761
Opus 5 $0.00043 $0.00380
Sonnet 5 $0.00017 $0.00152
Haiku 4.5 $0.00009 $0.00076

Measured 6d ago against content hash 2a78363767b5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

hunting-active-directory-attacks 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 6d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/analyst.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/hunting-active-directory-attacks/SKILL.md · 89 lines

What it actually says

Hunting Active Directory Attacks

When to Use

  • You have AD/domain-controller telemetry (Event IDs 4662, 4769, 4624) and want to detect DCSync replication abuse, Golden/Silver Ticket usage, and DCShadow.
  • You are investigating credential-access and domain-persistence activity.

Do not use this for Kerberoasting/AS-REP roasting — those have a dedicated hunt. This focuses on replication abuse and forged-ticket anomalies.

Prerequisites

  • Event ID 4662 (directory service access), 4769 (TGS requests), and 4624 (logons) with account and detail fields.

Workflow

Step 1: Hunt DCSync replication abuse

python scripts/analyst.py hunt events.csv

Flags 4662 events granting the replication rights GUIDs (DS-Replication-Get-Changes 1131f6aa-… / -All 1131f6ad-…) to non-DC accounts.

Step 2: Detect forged-ticket anomalies

Surface 4769 requests with anomalies consistent with Golden/Silver Tickets (RC4 where AES is expected, missing preceding 4768, or accounts that do not exist), and logons with mismatched ticket lifetimes.

Step 3: Confirm

Correlate the flagged account/host with whether it is a legitimate DC or replication service.

Step 4: Operationalize

Write a detection for replication-rights grants to non-DC principals.

Validation

  • DCSync flags key on the replication GUIDs granted to non-DC accounts.
  • Forged-ticket anomalies are based on encryption type / missing-AS-REQ evidence.
  • Findings map to ATT&CK T1003.006 / T1558.001.

Pitfalls

  • Legitimate DCs and Azure AD Connect perform replication — allow-list them.
  • Golden Tickets can perfectly mimic valid TGS; rely on corroborating anomalies, not one signal.
  • Incomplete auditing (4662 object-access auditing must be enabled) causing blind spots.

References

Files

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.

Changes

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.

  1. 6d ago First seen · 89 lines · 86 tokens per session scan A 2a78363767b5

Subscribe to this mod's changes

hunting-active-directory-attacks is a skill published in the GitHub repository meltedinhex/analyst-ai-pack (22 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 86 tokens to every session and 761 once invoked, about $0.0004 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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