A command for checking a local Windows computer for signs of malware, browser hijacking, and other suspicious activity. It examines browser settings, registry startup entries, processes, scheduled tasks, services, and common malware locations.

Use it to review browser changes, startup programs, suspicious processes, scheduled tasks, registry entries, and files in locations such as Temp and AppData.

It brings these security checks into one assessment instead of requiring separate manual inspections.

scan-system — Command by DeepBitsTechnology

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.

agentmods

npx agentmods add commands/deepbitstechnology/claude-plugins/scan-system

Clone the repo

git clone --depth 1 https://github.com/DeepBitsTechnology/claude-plugins

Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 404 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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.

Model	Per session	Once invoked
Fable 5	$0.00017	$0.00404
Opus 5	$0.00009	$0.00202
Sonnet 5	$0.00003	$0.00081
Haiku 4.5	$0.00002	$0.00040

Measured 2d ago against content hash 3cde8bec1ef9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

scan-system 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 2d 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.

drbinary-chat-plugin/commands/scan-system.md · 57 lines

What it actually says

System Security Scan

Perform a comprehensive security assessment of the local Windows system. Check for:

1. Browser Hijacking Detection

Check browser homepage and search engine settings
Scan for unauthorized browser extensions
Review browser shortcut targets for hijacking

2. Registry Analysis

Use PowerShell to check these critical registry locations:

HKCU:\Software\Microsoft\Windows\CurrentVersion\Run
HKLM:\Software\Microsoft\Windows\CurrentVersion\Run
HKCU:\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKLM:\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKCU:\Software\Microsoft\Internet Explorer\Main
HKCU:\Software\Microsoft\Edge\Main
Browser policy keys

3. Suspicious Processes

List running processes with unusual characteristics
Check for processes running from temp directories
Identify unsigned or hidden processes

4. Startup Programs

Enumerate all startup programs and services
Check Task Scheduler for suspicious scheduled tasks
Review startup folder contents

5. File System Scan

Check common malware locations:
- %TEMP%
- %APPDATA%
- %LOCALAPPDATA%
- C:\Users\Public
Look for recently modified suspicious files
Scan for hidden or system files in user directories

6. Network Connections

List active network connections
Identify suspicious listening ports
Check for unexpected remote connections

Output Format

Provide a structured report with:

Summary: Overall security status
Findings: List each issue with severity rating
Evidence: File paths, registry keys, process names
Recommendations: Specific remediation steps

Begin the scan now.

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.

2d ago First seen · 57 lines · 17 tokens per session scan A 3cde8bec1ef9

Subscribe to this mod's changes

scan-system is a command published in the GitHub repository DeepBitsTechnology/claude-plugins (46 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 17 tokens to every session and 404 once invoked, about $0.0001 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 2026-08-30.

Browser automation Code review Security binary-analysis claude-code-plugin cybersecurity-tools incident-response malware-analysis vulnerability-assessment

scan-system