analyzing-prefetch-files-for-execution-history

analyzing-prefetch-files-for-execution-history is a skill for Claude Code, Codex from andycungkrinx91/konoha. It costs 34 tokens per session (3,208 once invoked), scanned A, a copy of analyzing-prefetch-files-for-execution-history, MIT.

A digital-forensics workflow for reading Windows Prefetch files, which record information about programs run on a computer. It extracts execution counts, times, and referenced files from forensic copies.

In plain words
What is it for?
It helps collect and parse Prefetch files, identify executed applications and anti-forensic tools, and correlate execution with other evidence during an investigation.
Why use it?
Prefetch data can show whether a suspicious program ran and help place that activity on an incident timeline. This is useful even when other evidence is incomplete.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit It helps collect and parse Prefetch files, identify executed applications and anti-forensic tools, and correlate execution with other evidence during an investigation.

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Install with agentmods
npx agentmods add skills/andycungkrinx91/konoha/analyzing-prefetch-files-for-execution-history
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 andycungkrinx91/konoha --skill analyzing-prefetch-files-for-execution-history
Clone the repo
git clone --depth 1 https://github.com/andycungkrinx91/konoha

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 analyzing-prefetch-files-for-execution-history

README.md
[![agentmods](https://agentmods.dev/badge/skills/andycungkrinx91/konoha/analyzing-prefetch-files-for-execution-history/github.svg)](https://agentmods.dev/skills/andycungkrinx91/konoha/analyzing-prefetch-files-for-execution-history)
Your own site
<a href="https://agentmods.dev/skills/andycungkrinx91/konoha/analyzing-prefetch-files-for-execution-history"><img src="https://agentmods.dev/badge/skills/andycungkrinx91/konoha/analyzing-prefetch-files-for-execution-history/github.svg" alt="Measured on agentmods" height="20"></a>

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Your own site · 80×15
<a href="https://agentmods.dev/skills/andycungkrinx91/konoha/analyzing-prefetch-files-for-execution-history"><img src="https://agentmods.dev/badge/skills/andycungkrinx91/konoha/analyzing-prefetch-files-for-execution-history.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,208 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 100% copy Near-identical to another mod 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 $0.00034 $0.03208
Opus 5.5 $0.00014 $0.01283
Sonnet 5.5 $0.00007 $0.00642
Haiku 4.5 $0.00003 $0.00321

Measured today against content hash 58849dbbb92c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

analyzing-prefetch-files-for-execution-history 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 today.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/agent.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.

Origin

This is a copy

100% identical to analyzing-prefetch-files-for-execution-history — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/akatsuki-skill/references/anthropic-cybersecurity-skills-assets/skills/analyzing-prefetch-files-for-execution-history/SKILL.md · 329 lines

How it starts

The opening of the file, as written. The whole thing — 329 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Analyzing Prefetch Files for Execution History

When to Use

  • When determining which programs were executed on a Windows system and when
  • During malware investigations to confirm execution of suspicious binaries
  • For establishing a timeline of application usage during an incident
  • When correlating program execution with other forensic artifacts
  • To identify anti-forensic tools or unauthorized software that was run

Prerequisites

  • Access to Windows Prefetch directory (C:\Windows\Prefetch) from forensic image
  • PECmd (Eric Zimmerman), WinPrefetchView, or python-prefetch parser
  • Understanding of Prefetch file format (versions 17, 23, 26, 30)
  • Windows system with Prefetch enabled (default on client OS, disabled on servers)
  • Knowledge of Prefetch naming conventions (APPNAME-HASH.pf)

Workflow

Step 1: Extract Prefetch Files from Forensic Image

# Mount the forensic image
mount -o ro,loop,offset=$((2048*512)) /cases/case-2024-001/images/evidence.dd /mnt/evidence

# Copy all prefetch files
mkdir -p /cases/case-2024-001/prefetch/
cp /mnt/evidence/Windows/Prefetch/*.pf /cases/case-2024-001/prefetch/

# Count and list prefetch files
ls -la /cases/case-2024-001/prefetch/ | wc -l
ls -la /cases/case-2024-001/prefetch/ | head -30

# Hash all prefetch files for integrity
sha256sum /cases/case-2024-001/prefetch/*.pf > /cases/case-2024-001/prefetch/pf_hashes.txt

# Note: Prefetch filename format is EXECUTABLE_NAME-XXXXXXXX.pf
# The hash (XXXXXXXX) is based on the executable path
# Same executable from different paths creates different prefetch files

Step 2: Parse Prefetch Files with PECmd

# Using Eric Zimmerman's PECmd (Windows or via Mono/Wine on Linux)
# Download from https://ericzimmerman.github.io/

# Parse a single prefetch file
PECmd.exe -f "C:\cases\prefetch\POWERSHELL.EXE-A]B2C3D4.pf"

# Parse all prefetch files and output to CSV
PECmd.exe -d "C:\cases\prefetch\" --csv "C:\cases\analysis\" --csvf prefetch_results.csv

# Parse with JSON output
PECmd.exe -d "C:\cases\prefetch\" --json "C:\cases\analysis\" --jsonf prefetch_results.json

# Output includes for each file:
# - Executable name and path
# - Run count
# - Last run time (up to 8 timestamps in Windows 10)
# - Files and directories referenced during execution
# - Volume information (serial number, creation date)
# - Prefetch file creation time

Read the full file on GitHub · 329 lines

Files

What ships with it

2 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. today First seen · 329 lines · 34 tokens per session scan A 58849dbbb92c

Subscribe to this mod's changes

analyzing-prefetch-files-for-execution-history is a skill published in the GitHub repository andycungkrinx91/konoha (12 stars, last pushed today), licensed MIT. It adds 34 tokens to every session and 3,208 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to analyzing-prefetch-files-for-execution-history, differing in 0 lines, and is treated as a copy.

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