Detection Sigma
AgentSecOps/SecOpsAgentKit
Generic detection rule creation and management using Sigma, the universal SIEM rule format.
Detect Kerberos Pass-the-Ticket (PtT) attacks by analyzing Windows Event IDs 4768, 4769, and 4771 for anomalous ticket usage patterns, with detection queries for Splunk and Elastic SIEM.
Install Detecting Pass The Ticket Attacks
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-pass-the-ticket-attacks -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills detecting-pass-the-ticket-attacks --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/detecting-pass-the-ticket-attacks .claude/skills/detecting-pass-the-ticket-attacks && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "detecting-pass-the-ticket-attacks" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/detecting-pass-the-ticket-attacks into .claude/skills/detecting-pass-the-ticket-attacks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "detecting-pass-the-ticket-attacks", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/detecting-pass-the-ticket-attacksType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-pass-the-ticket-attacks -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills detecting-pass-the-ticket-attacks --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/detecting-pass-the-ticket-attacks .agents/skills/detecting-pass-the-ticket-attacks && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "detecting-pass-the-ticket-attacks" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/detecting-pass-the-ticket-attacks into .agents/skills/detecting-pass-the-ticket-attacks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "detecting-pass-the-ticket-attacks", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-pass-the-ticket-attacks -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills detecting-pass-the-ticket-attacks --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/detecting-pass-the-ticket-attacks .cursor/skills/detecting-pass-the-ticket-attacks && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "detecting-pass-the-ticket-attacks" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/detecting-pass-the-ticket-attacks into .cursor/skills/detecting-pass-the-ticket-attacks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "detecting-pass-the-ticket-attacks", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/detecting-pass-the-ticket-attacks--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-pass-the-ticket-attacks -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills detecting-pass-the-ticket-attacks --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/detecting-pass-the-ticket-attacks .gemini/skills/detecting-pass-the-ticket-attacks && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "detecting-pass-the-ticket-attacks" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/detecting-pass-the-ticket-attacks into .gemini/skills/detecting-pass-the-ticket-attacks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "detecting-pass-the-ticket-attacks", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills detecting-pass-the-ticket-attacksInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-pass-the-ticket-attacks -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/detecting-pass-the-ticket-attacks .github/skills/detecting-pass-the-ticket-attacks && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "detecting-pass-the-ticket-attacks" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/detecting-pass-the-ticket-attacks into .github/skills/detecting-pass-the-ticket-attacks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "detecting-pass-the-ticket-attacks", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-pass-the-ticket-attacks -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills detecting-pass-the-ticket-attacks --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/detecting-pass-the-ticket-attacks .opencode/skills/detecting-pass-the-ticket-attacks && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "detecting-pass-the-ticket-attacks" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/detecting-pass-the-ticket-attacks into .opencode/skills/detecting-pass-the-ticket-attacks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "detecting-pass-the-ticket-attacks", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
detecting-pass-the-ticket-attacks- GitHub stars
- 34k
- Token cost
- ~717 tokens
- SKILL.md length
- 261 words
- Files
- 4 (incl. scripts, references)
- Skills in repo
- 644
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Detect Kerberos Pass-the-Ticket (PtT) attacks by analyzing Windows Event IDs 4768, 4769, and 4771 for anomalous ticket usage patterns, with detection queries for Splunk and Elastic SIEM.
- Works in 7 steps: Enable Kerberos audit logging on Domain… → Forward Event IDs 4768, 4769, and 4771… → Deploy detection rules for RC4… → …
- Investigating incidents involving stolen
- SKILL.md covers Overview, When to Use, Prerequisites and Steps, plus 1 more section
- Runs Python scripts from its folder
What it does
Detecting Pass The Ticket Attacks is an agent skill from mukul975/Anthropic-Cybersecurity-Skills. Detect Kerberos Pass-the-Ticket (PtT) attacks by analyzing Windows Event IDs 4768, 4769, and 4771 for anomalous ticket usage patterns, with detection queries for Splunk and Elastic SIEM. Use when investigating incidents involving stolen or replayed Kerberos tickets, building detection rules or threat hunting queries for ticket abuse, or validating SOC monitoring coverage for credential-theft attack techniques.
Its SKILL.md is about 720 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including scripts and reference files (for example `references/api-reference.md` and `scripts/agent.py`).
It sits in Security, covering Security operations. It works with Splunk. The repository describes itself as: 817 structured cybersecurity skills for AI agents · Mapped to 6 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND, NIST AI RMF & MITRE F3 (Fight Fraud) · agentskills.io…. The licence is Apache-2.0.
When your agent uses it
- Investigating incidents involving stolen
- Replayed Kerberos tickets
- Building detection rules
- Threat hunting queries for ticket abuse
Example prompts
- “/detecting-pass-the-ticket-attacks”
Requirements
- Python 3
Workflow steps
7 steps, taken from the first numbered list in SKILL.md.
- Enable Kerberos audit logging on Domain Controllers via Group Policy
- Forward Event IDs 4768, 4769, and 4771 to SIEM platform
- Deploy detection rules for RC4 encryption downgrade (TicketEncryptionType 0x17)
- Create correlation rule for ticket reuse across multiple source IPs
- Build baseline of normal TGS request volume per user/host
- Alert on standard deviation anomalies in ticket request patterns
- Investigate flagged events with enrichment from Active Directory
What it can do on your machine
Read from SKILL.md and the folder at commit 54a7988. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Detecting Pass The Ticket Attacks loads about 717 tokens when it runs, and up to ~1.4k if it reads all its reference files. Until then it costs about 112 tokens; SKILL.md has 261 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
The full file from mukul975/Anthropic-Cybersecurity-Skills at commit 54a7988, republished under its Apache-2.0 licence (© mukul975). 261 words, ~717 tokens.
Download SKILL.mdSave it as
.claude/skills/detecting-pass-the-ticket-attacks/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.- name
- detecting-pass-the-ticket-attacks
- description
- Detect Kerberos Pass-the-Ticket (PtT) attacks by analyzing Windows Event IDs 4768, 4769, and 4771 for anomalous ticket usage patterns, with detection queries for Splunk and Elastic SIEM. Use when investigating incidents involving stolen or replayed Kerberos tickets, building detection rules or threat hunting queries for ticket abuse, or validating SOC monitoring coverage for credential-theft attack techniques.
- domain
- cybersecurity
- subdomain
- threat-detection
- tags
- kerberos, pass-the-ticket, active-directory, splunk, elastic, credential-theft, windows-security
- version
- 1.0
- author
- mahipal
- license
- Apache-2.0
- d3fend_techniques
- Token Binding, Execution Isolation, Restore Access, Application Protocol Command Analysis, Process Termination
- nist_csf
- DE.CM-01, DE.AE-02, DE.AE-06, ID.RA-05
- mitre_attack
- T1078, T1190, T1059, T1003, T1110
Detecting Pass-the-Ticket Attacks
Overview
Pass-the-Ticket (PtT) is a credential theft technique (MITRE ATT&CK T1550.003) where adversaries steal Kerberos tickets (TGT or TGS) from one system and replay them on another to authenticate without knowing the user's password. This skill teaches detection of PtT attacks by correlating Windows Security Event IDs 4768 (TGT request), 4769 (TGS request), and 4771 (pre-authentication failure) for anomalies such as ticket reuse across different hosts, RC4 encryption downgrades, and unusual service ticket request volumes.
When to Use
- When investigating security incidents that require detecting pass the ticket attacks
- When building detection rules or threat hunting queries for this domain
- When SOC analysts need structured procedures for this analysis type
- When validating security monitoring coverage for related attack techniques
Prerequisites
- Windows Domain Controller with advanced audit policy enabled (Audit Kerberos Authentication Service, Audit Kerberos Service Ticket Operations)
- Splunk or Elastic SIEM ingesting Windows Security event logs
- Sysmon deployed on endpoints for supplementary process telemetry
- Python 3.8+ with
requestslibrary
Steps
- Enable Kerberos audit logging on Domain Controllers via Group Policy
- Forward Event IDs 4768, 4769, and 4771 to SIEM platform
- Deploy detection rules for RC4 encryption downgrade (TicketEncryptionType 0x17)
- Create correlation rule for ticket reuse across multiple source IPs
- Build baseline of normal TGS request volume per user/host
- Alert on standard deviation anomalies in ticket request patterns
- Investigate flagged events with enrichment from Active Directory
Expected Output
JSON report containing detected PtT indicators including anomalous ticket requests, RC4 downgrades, cross-host ticket reuse events, and risk-scored users with MITRE ATT&CK technique mapping.
© mukul975, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 3 other files (scripts, references) in skills/detecting-pass-the-ticket-attacks of mukul975/Anthropic-Cybersecurity-Skills.
- SKILL.md
- LICENSE
- references/api-reference.md
- scripts/agent.py
Open the folder on GitHubat commit 54a7988
Compare with similar skills
Detecting Pass The Ticket Attacks next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Detecting Pass The Ticket Attacks this skillmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~717 | Automated safety check: Pass | Apache-2.0 | |
| Detection SigmaAgentSecOps/SecOpsAgentKit | 220 | 1 repos | ~4k | Automated safety check: Pass | Custom licence | |
| Siem Detectionbriiirussell/cybersecurity-skills | 413 | — | ~2.6k | Automated safety check: Notes | MIT | |
| Doca ArgusNVIDIA/skills | 3.6k | — | ~4.8k | Automated safety check: Pass | Apache-2.0 | |
| Hunting Threatstrilwu/secskills | 157 | — | ~3.5k | Automated safety check: Pass | MIT | |
| Siem Loggingancoleman/ai-design-components | 525 | — | ~3.4k | Automated safety check: Pass | MIT |
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Related
Works with
Categories
Questions about Detecting Pass The Ticket Attacks
What does Detecting Pass The Ticket Attacks do?
Detect Kerberos Pass-the-Ticket (PtT) attacks by analyzing Windows Event IDs 4768, 4769, and 4771 for anomalous ticket usage patterns, with detection queries for Splunk and Elastic SIEM. Detecting Pass The Ticket Attacks is an agent skill from mukul975/Anthropic-Cybersecurity-Skills. Detect Kerberos Pass-the-Ticket (PtT) attacks by analyzing Windows Event IDs 4768, 4769, and 4771 for anomalous ticket usage patterns, with detection queries for Splunk and Elastic SIEM.
When should I use Detecting Pass The Ticket Attacks?
Detecting Pass The Ticket Attacks fits situations like: investigating incidents involving stolen; replayed Kerberos tickets; building detection rules; threat hunting queries for ticket abuse.
How do I install Detecting Pass The Ticket Attacks in Claude Code?
Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-pass-the-ticket-attacks -a claude-code`. Or copy the skill folder (skills/detecting-pass-the-ticket-attacks in mukul975/Anthropic-Cybersecurity-Skills) into .claude/skills/detecting-pass-the-ticket-attacks in your project. Claude Code loads it when a task matches its description.
How do I install Detecting Pass The Ticket Attacks in Codex?
Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-pass-the-ticket-attacks -a codex`. Or copy the skill folder (skills/detecting-pass-the-ticket-attacks in mukul975/Anthropic-Cybersecurity-Skills) into .agents/skills/detecting-pass-the-ticket-attacks in your project. Codex loads it when a task matches its description.
Can I use Detecting Pass The Ticket Attacks in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-pass-the-ticket-attacks -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/detecting-pass-the-ticket-attacks, .gemini/skills/detecting-pass-the-ticket-attacks, .github/skills/detecting-pass-the-ticket-attacks and .opencode/skills/detecting-pass-the-ticket-attacks in your project.
What does Detecting Pass The Ticket Attacks need to run?
Going by SKILL.md and its folder, Detecting Pass The Ticket Attacks needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Detecting Pass The Ticket Attacks access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Detecting Pass The Ticket Attacks safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Detecting Pass The Ticket Attacks use?
Detecting Pass The Ticket Attacks is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Detecting Pass The Ticket Attacks use?
About 717 tokens (SKILL.md is roughly 2.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 667 tokens, read only when the agent opens those files.
What are the alternatives to Detecting Pass The Ticket Attacks?
Skills that share tags, products or a category with Detecting Pass The Ticket Attacks: Detection Sigma (AgentSecOps/SecOpsAgentKit, 220 stars), Siem Detection (briiirussell/cybersecurity-skills, 413 stars), Doca Argus (NVIDIA/skills, 3.6k stars) and Hunting Threats (trilwu/secskills, 157 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Detecting Pass The Ticket Attacks?
mukul975 (a GitHub user) maintains it in mukul975/Anthropic-Cybersecurity-Skills, which has 34,116 GitHub stars. The repository holds 644 skills in this directory. The repository was last updated on August 31, 2026.
Source: mukul975/Anthropic-Cybersecurity-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.