Incident Triage
briiirussell/cybersecurity-skills
Guide rapid triage and initial response to security incidents following NIST SP 800-61 methodology.
Agent skill
Hunting For Unusual Service Installations
Detects suspicious Windows service installations (MITRE ATT&CK T1543.003) by parsing System event log Event ID 7045, analyzing service binary paths, and flagging indicators of persistence mechanisms…
Install Hunting For Unusual Service Installations
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill hunting-for-unusual-service-installations -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills hunting-for-unusual-service-installations --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/hunting-for-unusual-service-installations .claude/skills/hunting-for-unusual-service-installations && 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 "hunting-for-unusual-service-installations" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/hunting-for-unusual-service-installations into .claude/skills/hunting-for-unusual-service-installations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hunting-for-unusual-service-installations", 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/hunting-for-unusual-service-installationsType 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 hunting-for-unusual-service-installations -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills hunting-for-unusual-service-installations --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/hunting-for-unusual-service-installations .agents/skills/hunting-for-unusual-service-installations && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "hunting-for-unusual-service-installations" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/hunting-for-unusual-service-installations into .agents/skills/hunting-for-unusual-service-installations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hunting-for-unusual-service-installations", 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 hunting-for-unusual-service-installations -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills hunting-for-unusual-service-installations --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/hunting-for-unusual-service-installations .cursor/skills/hunting-for-unusual-service-installations && 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 "hunting-for-unusual-service-installations" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/hunting-for-unusual-service-installations into .cursor/skills/hunting-for-unusual-service-installations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hunting-for-unusual-service-installations", 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/hunting-for-unusual-service-installations--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 hunting-for-unusual-service-installations -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills hunting-for-unusual-service-installations --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/hunting-for-unusual-service-installations .gemini/skills/hunting-for-unusual-service-installations && 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 "hunting-for-unusual-service-installations" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/hunting-for-unusual-service-installations into .gemini/skills/hunting-for-unusual-service-installations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hunting-for-unusual-service-installations", 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 hunting-for-unusual-service-installationsInstalls 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 hunting-for-unusual-service-installations -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/hunting-for-unusual-service-installations .github/skills/hunting-for-unusual-service-installations && 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 "hunting-for-unusual-service-installations" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/hunting-for-unusual-service-installations into .github/skills/hunting-for-unusual-service-installations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hunting-for-unusual-service-installations", 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 hunting-for-unusual-service-installations -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 hunting-for-unusual-service-installations --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/hunting-for-unusual-service-installations .opencode/skills/hunting-for-unusual-service-installations && 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 "hunting-for-unusual-service-installations" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/hunting-for-unusual-service-installations into .opencode/skills/hunting-for-unusual-service-installations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hunting-for-unusual-service-installations", 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
hunting-for-unusual-service-installations- GitHub stars
- 34k
- Token cost
- ~677 tokens
- SKILL.md length
- 230 words
- Files
- 4 (incl. scripts, references)
- Skills in repo
- 644
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Detects suspicious Windows service installations (MITRE ATT&CK T1543.003) by parsing System event log Event ID 7045, analyzing service binary paths, and flagging indicators of persistence mechanisms…
- Works in 7 steps: Parse System.evtx for Event ID 7045 (new… → Extract service name, binary path,… → Flag services with suspicious binary… → …
- Hunting for new-service persistence after a suspected compromise
- SKILL.md covers Overview, When to Use, Prerequisites and Steps, plus 1 more section
- Runs Python scripts from its folder
What it does
Hunting For Unusual Service Installations is an agent skill from mukul975/Anthropic-Cybersecurity-Skills. Detects suspicious Windows service installations (MITRE ATT&CK T1543.003) by parsing System event log Event ID 7045, analyzing service binary paths, and flagging indicators of persistence mechanisms via Sysmon/EDR telemetry. Use when hunting for new-service persistence after a suspected compromise, when Event ID 7045 fires for an unfamiliar service, or during incident response to enumerate service-based persistence on Windows hosts.
Its SKILL.md is about 680 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 Incident response and Security operations. 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
- Hunting for new-service persistence after a suspected compromise
- Event ID 7045 fires for an unfamiliar service
- During incident response to enumerate service-based persistence on Windows hosts
Example prompts
- “Use the hunting-for-unusual-service-installations skill to detect suspicious Windows service installations (MITRE ATT&CK T1543.003) by parsing…”
- “/hunting-for-unusual-service-installations”
Requirements
- Python 3
Workflow steps
7 steps, taken from the first numbered list in SKILL.md.
- Parse System.evtx for Event ID 7045 (new service installed)
- Extract service name, binary path, service type, and account
- Flag services with suspicious binary paths (temp dirs, encoded commands)
- Detect PowerShell-based service creation patterns
- Identify services running as LocalSystem with unusual paths
- Cross-reference with known legitimate service baselines
- Generate threat hunting report with MITRE ATT&CK T1543.003 mapping
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
Hunting For Unusual Service Installations loads about 677 tokens when it runs, and up to ~1.3k if it reads all its reference files. Until then it costs about 120 tokens; SKILL.md has 230 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). 230 words, ~677 tokens.
Download SKILL.mdSave it as
.claude/skills/hunting-for-unusual-service-installations/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.- name
- hunting-for-unusual-service-installations
- description
- Detects suspicious Windows service installations (MITRE ATT&CK T1543.003) by parsing System event log Event ID 7045, analyzing service binary paths, and flagging indicators of persistence mechanisms via Sysmon/EDR telemetry. Use when hunting for new-service persistence after a suspected compromise, when Event ID 7045 fires for an unfamiliar service, or during incident response to enumerate service-based persistence on Windows hosts.
- domain
- cybersecurity
- subdomain
- threat-hunting
- tags
- threat-hunting, T1543.003, service-installation, persistence, Event-7045, Sysmon, Windows-services
- version
- 1.0
- author
- mahipal
- license
- Apache-2.0
- d3fend_techniques
- Platform Hardening, System Configuration Permissions, Restore Object, Restore Database, Asset Inventory
- nist_csf
- DE.CM-01, DE.AE-02, DE.AE-07, ID.RA-05
- mitre_attack
- T1046, T1057, T1082, T1083, T1547
Hunting for Unusual Service Installations
Overview
Attackers frequently install malicious Windows services for persistence and privilege escalation (MITRE ATT&CK T1543.003 — Create or Modify System Process: Windows Service). Event ID 7045 in the System event log records every new service installation. This skill parses .evtx log files to extract service installation events, flags suspicious binary paths (temp directories, PowerShell, cmd.exe, encoded commands), and correlates with known attack patterns.
When to Use
- When investigating security incidents that require hunting for unusual service installations
- 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
- Python 3.9+ with
python-evtx,lxml - Windows System event log (.evtx) files
- Access to live System event log (optional, for real-time monitoring)
- Sysmon logs for enhanced process tracking (optional)
Steps
- Parse System.evtx for Event ID 7045 (new service installed)
- Extract service name, binary path, service type, and account
- Flag services with suspicious binary paths (temp dirs, encoded commands)
- Detect PowerShell-based service creation patterns
- Identify services running as LocalSystem with unusual paths
- Cross-reference with known legitimate service baselines
- Generate threat hunting report with MITRE ATT&CK T1543.003 mapping
Expected Output
- JSON report listing all new service installations with risk scores, suspicious indicators, and remediation recommendations
- Timeline of service installation events with binary path analysis
© 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/hunting-for-unusual-service-installations 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
Hunting For Unusual Service Installations 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 |
|---|---|---|---|---|---|---|
| Hunting For Unusual Service Installations this skillmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~677 | Automated safety check: Pass | Apache-2.0 | |
| Incident Triagebriiirussell/cybersecurity-skills | 413 | — | ~1.5k | Automated safety check: Notes | MIT | |
| Breach Detection Systemmukul975/Privacy-Data-Protection-Skills | 301 | — | ~3k | Automated safety check: Pass | Apache-2.0 | |
| Sentinelvinayaklatthe/microsoft-security-skills | 175 | — | ~2.2k | Automated safety check: Pass | MIT | |
| Msp HelpdeskRTFM-IT-Services-LLC/msp-claude-skills | 115 | — | ~3.3k | Automated safety check: Pass | Custom licence | |
| Forensics OsqueryAgentSecOps/SecOpsAgentKit | 220 | 1 repos | ~4.9k | Automated safety check: Notes | Custom licence |
Similar skills
Breach Detection System
mukul975/Privacy-Data-Protection-Skills
Implements technical breach detection capabilities including SIEM integration, DLP alert configuration, anomaly detection rules, and insider threat monitoring.
Sentinel
vinayaklatthe/microsoft-security-skills
Guidance for designing and operating Microsoft Sentinel, the cloud-native SIEM and SOAR delivered through the Defender portal.
Msp Helpdesk
RTFM-IT-Services-LLC/msp-claude-skills
A skill your agent uses for anything about how your MSP runs day-to-day support: setting or questioning a ticket's priority, response and resolution targets, "the client says everything is down"…
Forensics Osquery
AgentSecOps/SecOpsAgentKit
SQL-powered forensic investigation and system interrogation using osquery to query operating systems as relational databases.
Ir Velociraptor
AgentSecOps/SecOpsAgentKit
Endpoint visibility, digital forensics, and incident response using Velociraptor Query Language (VQL) for evidence collection and threat hunting at scale.
More from mukul975/Anthropic-Cybersecurity-Skills
All 644 skills in this repoCampaign Attribution Evidence Analysis
mukul975/Anthropic-Cybersecurity-Skills
Weighs infrastructure, TTP, malware code and timing evidence with the Diamond Model and competing hypotheses to reach a confidence-rated attribution.
Go Malware Analysis in Ghidra
mukul975/Anthropic-Cybersecurity-Skills
Walks through reverse engineering Go-compiled malware in Ghidra: parsing buildinfo and pclntab, recovering stripped function names and extracting dependencies.
LNK and Jump List Forensics
mukul975/Anthropic-Cybersecurity-Skills
Guides forensic analysis of Windows LNK shortcut files and Jump Lists with LECmd, JLECmd and manual parsing to show file access and program execution.
Malware Persistence Analysis with Autoruns
mukul975/Anthropic-Cybersecurity-Skills
Hunts Windows malware persistence with Sysinternals Autoruns, covering run keys, services, scheduled tasks and drivers, with baseline comparison.
NTFS MFT Deleted File Recovery
mukul975/Anthropic-Cybersecurity-Skills
Guides a Windows forensic examination of the NTFS Master File Table to recover deleted-file evidence, build timelines and spot timestomping.
Network Covert Channel Analysis
mukul975/Anthropic-Cybersecurity-Skills
Detects DNS tunneling, ICMP exfiltration and HTTP-based covert channels in packet captures and DNS logs when hunting for hidden command-and-control traffic.
Related
Categories
Questions about Hunting For Unusual Service Installations
What does Hunting For Unusual Service Installations do?
Detects suspicious Windows service installations (MITRE ATT&CK T1543.003) by parsing System event log Event ID 7045, analyzing service binary paths, and flagging indicators of persistence mechanisms…. Hunting For Unusual Service Installations is an agent skill from mukul975/Anthropic-Cybersecurity-Skills.003) by parsing System event log Event ID 7045, analyzing service binary paths, and flagging indicators of persistence mechanisms via Sysmon/EDR telemetry.
When should I use Hunting For Unusual Service Installations?
Hunting For Unusual Service Installations fits situations like: hunting for new-service persistence after a suspected compromise; event ID 7045 fires for an unfamiliar service; during incident response to enumerate service-based persistence on Windows hosts.
How do I install Hunting For Unusual Service Installations in Claude Code?
Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill hunting-for-unusual-service-installations -a claude-code`. Or copy the skill folder (skills/hunting-for-unusual-service-installations in mukul975/Anthropic-Cybersecurity-Skills) into .claude/skills/hunting-for-unusual-service-installations in your project. Claude Code loads it when a task matches its description.
How do I install Hunting For Unusual Service Installations in Codex?
Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill hunting-for-unusual-service-installations -a codex`. Or copy the skill folder (skills/hunting-for-unusual-service-installations in mukul975/Anthropic-Cybersecurity-Skills) into .agents/skills/hunting-for-unusual-service-installations in your project. Codex loads it when a task matches its description.
Can I use Hunting For Unusual Service Installations 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 hunting-for-unusual-service-installations -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/hunting-for-unusual-service-installations, .gemini/skills/hunting-for-unusual-service-installations, .github/skills/hunting-for-unusual-service-installations and .opencode/skills/hunting-for-unusual-service-installations in your project.
What does Hunting For Unusual Service Installations need to run?
Going by SKILL.md and its folder, Hunting For Unusual Service Installations needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Hunting For Unusual Service Installations 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 Hunting For Unusual Service Installations 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 Hunting For Unusual Service Installations use?
Hunting For Unusual Service Installations 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 Hunting For Unusual Service Installations use?
About 677 tokens (SKILL.md is roughly 2.7k 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 660 tokens, read only when the agent opens those files.
What are the alternatives to Hunting For Unusual Service Installations?
Skills that share tags, products or a category with Hunting For Unusual Service Installations: Incident Triage (briiirussell/cybersecurity-skills, 413 stars), Breach Detection System (mukul975/Privacy-Data-Protection-Skills, 301 stars), Sentinel (vinayaklatthe/microsoft-security-skills, 175 stars) and Msp Helpdesk (RTFM-IT-Services-LLC/msp-claude-skills, 115 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Hunting For Unusual Service Installations?
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.