conducting-malware-incident-response

conducting-malware-incident-response is a skill for Claude Code from 26zl/cybersec-toolkit. It costs 79 tokens per session (2,240 once invoked), scanned A, original, MIT.

A malware incident-response procedure for identifying an infection, finding how it entered and spread, containing affected endpoints, removing it, and restoring systems.

In plain words
What is it for?
Use it to investigate suspicious endpoint behavior, malicious files, command-and-control traffic, and malware campaigns, then rebuild affected machines when necessary. It is not a reverse-engineering process for researching malware samples.
Why use it?
It gives responders a structured way to limit damage and preserve evidence when antivirus, endpoint monitoring, or user reports indicate malware.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Part of the cybersec-toolkit plugin — 197 skills, 2 hooks, 1 MCP server shipped together

Good fit Use it to investigate suspicious endpoint behavior, malicious files, command-and-control traffic, and malware campaigns, then rebuild affected machines when necessary. It is not a reverse-engineering process for researching malware samples.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/26zl/cybersec-toolkit/conducting-malware-incident-response
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 26zl/cybersec-toolkit --skill conducting-malware-incident-response
Clone the repo
git clone --depth 1 https://github.com/26zl/cybersec-toolkit

Made for: Claude Code.

Or install cybersec-toolkit, the plugin that ships this one along with the rest of its 197 skills, 2 hooks, 1 MCP server.

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 conducting-malware-incident-response

README.md
[![agentmods](https://agentmods.dev/badge/skills/26zl/cybersec-toolkit/conducting-malware-incident-response/github.svg)](https://agentmods.dev/skills/26zl/cybersec-toolkit/conducting-malware-incident-response)
Your own site
<a href="https://agentmods.dev/skills/26zl/cybersec-toolkit/conducting-malware-incident-response"><img src="https://agentmods.dev/badge/skills/26zl/cybersec-toolkit/conducting-malware-incident-response/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 conducting-malware-incident-response

Your own site · 80×15
<a href="https://agentmods.dev/skills/26zl/cybersec-toolkit/conducting-malware-incident-response"><img src="https://agentmods.dev/badge/skills/26zl/cybersec-toolkit/conducting-malware-incident-response.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,240 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high YARA Match · line 182
    YARA rule matched a known malware signature (reverse shell, backdoor, ransomware, C2 framework, or info stealer).
    Fix: Remove the malware payload or compromised file entirely. Investigate how it entered the skill and audit all other artifacts for additional indicators of compromise.
How audits are shown
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 $0.00079 $0.02240
Opus 5 $0.00039 $0.01120
Sonnet 5 $0.00016 $0.00448
Haiku 4.5 $0.00008 $0.00224

Measured 9d ago against content hash 3d5d84b6b418, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

conducting-malware-incident-response 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 9d ago.

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

Copies of this mod

1 near-identical copy found in the catalogue:

.claude/skills/conducting-malware-incident-response/SKILL.md · 228 lines

How it starts

The opening of the file, as written. The whole thing — 228 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Conducting Malware Incident Response

When to Use

  • EDR or antivirus detects malware execution on one or more endpoints
  • A user reports suspicious system behavior indicative of malware infection
  • Threat intelligence indicates a malware campaign targeting the organization's industry
  • Network monitoring detects beaconing traffic consistent with known malware C2 patterns
  • A file detonation in a sandbox returns a malicious verdict

Do not use for analyzing malware samples in a research context; use dedicated malware analysis procedures for reverse engineering.

Prerequisites

  • EDR platform with process tree visibility and host isolation capability
  • Malware sandbox environment (Cuckoo, ANY.RUN, Joe Sandbox, Hybrid Analysis)
  • Access to threat intelligence platforms for malware family identification (VirusTotal, MalwareBazaar)
  • Forensic imaging tools for evidence preservation (FTK Imager, KAPE)
  • Clean system images or gold images for endpoint rebuild
  • MITRE ATT&CK framework reference for technique mapping

Workflow

Step 1: Detect and Confirm Malware Presence

Validate the malware alert and gather initial indicators:

  • Review EDR alert details: detection name, file path, hash (SHA-256), process tree
  • Check if the detection is a known malware family or generic heuristic detection
  • Query the file hash against VirusTotal, MalwareBazaar, and internal threat intelligence
  • Examine the process execution chain to determine how the malware was delivered
Detection Summary:
File:        C:\Users\jsmith\AppData\Local\Temp\update.exe
SHA-256:     a1b2c3d4e5f6...
Detection:   CrowdStrike: Malware/Qakbot | VirusTotal: 58/72 engines
Parent:      WINWORD.EXE → cmd.exe → powershell.exe → update.exe
Delivery:    Email attachment (Invoice-Nov2025.docm)
Network:     HTTPS POST to 185.220.101[.]42:443 every 60s
Persistence: Scheduled Task "WindowsUpdate" → update.exe

Step 2: Scope the Infection

Determine how many systems are affected and the malware's propagation method:

Read the full file on GitHub · 228 lines

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. 9d ago First seen · 228 lines · 79 tokens per session scan A 3d5d84b6b418

Subscribe to this mod's changes

conducting-malware-incident-response is a skill published in the GitHub repository 26zl/cybersec-toolkit (54 stars, last pushed today), licensed MIT. It adds 79 tokens to every session and 2,240 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.

Related

Other skills, from other repositories

conducting-malware-incident-response

Respond to malware infections across enterprise endpoints by identifying the malware family, determining infection vectors, assessing spread, and executing containment, analysis, eradication, and recovery procedures aligned to MITRE ATT&CK. Use when responding to a confirmed or suspected malware infection, including…

Youngmaidainon/Agent-Level-Up · 78 tokens

conducting-malware-incident-response

Responds to malware infections across enterprise endpoints by identifying the malware family, determining infection vectors, assessing spread, and executing eradication procedures. Covers the full lifecycle from detection through containment, analysis, removal, and recovery. Activates for requests involving malware…

RobotFlow-Labs/skills-repo · 79 tokens

analyzing-windows-prefetch-with-python

Parse Windows Prefetch files using the windowsprefetch Python library to reconstruct application execution history, detect renamed or masquerading binaries, and identify suspicious program execution patterns.

xalgorix/xalgorix · 43 tokens

analyzing-linux-kernel-rootkits

Detect kernel-level rootkits in Linux memory dumps using Volatility3 linux plugins (checksyscall, lsmod, hiddenmodules), rkhunter system scanning, and /proc vs /sys discrepancy analysis to identify hooked syscalls, hidden kernel modules, and tampered system structures.

xalgorix/xalgorix · 65 tokens

analyzing-malware-sandbox-evasion-techniques

Detect sandbox and VM evasion techniques in malware samples by analyzing timing checks, VM/hypervisor artifact queries, user-interaction checks, and sleep-inflation patterns from Cuckoo or AnyRun behavioral reports. Use when a sample shows no or minimal activity in a sandbox, when a behavioral report needs review for…

mukul975/Anthropic-Cybersecurity-Skills · 89 tokens

mobile-pentest

Mobile app pentest for bug bounty (Android APK + iOS IPA) — runtime-first workflow: install app, proxy through Burp/mitmproxy, drive the UI, capture packets, then test the API exactly like a web target; escalate to decompile (apktool/jadx) and Frida/objection only when traffic is SSL-pinned, encrypted, or absent.…

Awarexone/Agentic-Bug-Hunter · 205 tokens