winforensics-mcp 0.4.0

Windows Forensics MCP Server - EVTX parsing, Registry analysis, PE analysis, and remote artifact collection for DFIR

Windows Forensics MCP Server

Windows DFIR from Linux - A comprehensive forensics toolkit designed entirely for Linux environments with zero Windows tool dependencies. Parse Windows artifacts natively using pure Python libraries.

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Why This Matters

Traditional Windows forensics often requires:

• Running analysis tools on Windows
• Commercial forensic suites with expensive licenses
• Eric Zimmerman tools that only run on Windows/.NET

WinForensics-MCP changes this. Built from the ground up for Linux-based analysis:

• No Windows Required - Analyze Windows disk images directly from your Linux forensics workstation
• No Wine/Mono Hacks - Pure Python implementations using battle-tested open-source libraries
• AI-Assisted Analysis - Integrates with Claude CLI and any MCP-compatible client for intelligent artifact correlation

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Features

Core Forensics

Category	Capabilities
EVTX Logs	Parse Windows Event Logs with filtering, search, and pre-built security queries
Registry	Analyze SAM, SYSTEM, SOFTWARE, SECURITY, NTUSER.DAT hives
Remote Collection	Collect artifacts via WinRM (password or pass-the-hash)

Execution Artifacts

Category	Capabilities
PE Analysis	Static analysis with hashes (MD5/SHA1/SHA256/imphash), imports, exports, packer detection
Prefetch	Execution evidence with run counts, timestamps, loaded files
Amcache	SHA1 hashes and first-seen timestamps from Amcache.hve
SRUM	Application resource usage, CPU time, network activity from SRUDB.dat

File System Artifacts

Category	Capabilities
MFT	Master File Table parsing with timestomping detection
USN Journal	Change journal for file operations and deleted file recovery
Timeline	Unified timeline from MFT, USN, Prefetch, Amcache, EVTX

User Activity

Category	Capabilities
Browser	Edge, Chrome, Firefox history and downloads
LNK Files	Windows shortcut analysis for recently accessed files
ShellBags	Folder navigation history with suspicious path detection
RecentDocs	Registry-based recent document tracking

Network Forensics

Category	Capabilities
PCAP Analysis	Parse PCAP/PCAPNG files - conversations, DNS queries, HTTP requests, suspicious connections

Malware Detection

Category	Capabilities
YARA Scanning	718 rules from signature-base - APT, ransomware, webshells, hacktools
VirusTotal	Hash/IP/domain reputation lookups with caching and rate limiting (free tier supported)
DiE Integration	Detect packers (UPX, Themida, VMProtect), compilers, .NET, installers via Detect It Easy

Orchestrators

Tool	What It Does
investigate_execution	Correlates Prefetch + Amcache + SRUM to answer "Was this binary executed?"
investigate_user_activity	Correlates Browser + ShellBags + LNK + RecentDocs for user activity timeline
hunt_ioc	Searches for IOC (hash/filename/IP/domain) across ALL artifact sources
build_timeline	Builds unified forensic timeline from multiple sources

Utilities

Tool	What It Does
ingest_parsed_csv	Import Eric Zimmerman tool CSV output (MFTECmd, PECmd, AmcacheParser)

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Installation

Prerequisites

# Install uv (fast Python package manager)
curl -LsSf https://astral.sh/uv/install.sh | sh
source ~/.bashrc

# Ensure Python 3.10+
python3 --version

Install

git clone https://github.com/x746b/winforensics-mcp.git
cd winforensics-mcp

# Install with uv (recommended)
uv sync

# Or traditional pip
uv venv && source .venv/bin/activate
uv pip install -e .

# For remote collection (WinRM, SSH, SMB):
uv pip install -e ".[remote]"

# For YARA malware scanning:
uv pip install -e ".[yara]"

# For VirusTotal threat intelligence:
uv pip install -e ".[virustotal]"

# For PCAP network analysis:
uv pip install -e ".[pcap]"

# Install everything:
uv pip install -e ".[all]"

Verify

uv run python -m winforensics_mcp.server
# Should start without errors (Ctrl+C to exit)

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Adding to Claude CLI

Recommended: Using claude mcp add

claude mcp add winforensics-mcp \
  --scope user \
  -- uv run --directory /path/to/winforensics-mcp python -m winforensics_mcp.server

Alternative: Manual JSON

Edit ~/.claude.json:

{
  "mcpServers": {
    "winforensics-mcp": {
      "command": "uv",
      "args": [
        "run",
        "--directory",
        "/path/to/winforensics-mcp",
        "python",
        "-m",
        "winforensics_mcp.server"
      ]
    }
  }
}

Verify

claude mcp list
# Should show winforensics-mcp

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LLM Integration (CLAUDE.md)

For AI-assisted forensic analysis, include CLAUDE.md in your case directory. It provides:

• Orchestrator-first guidance - Ensures LLMs use high-level tools before low-level parsers
• Token efficiency - Reduces API costs by 50%+ through proper tool selection
• Investigation workflow - Step-by-step methodology for consistent analysis

Usage

Copy CLAUDE.md to your case directory:

cp /path/to/winforensics-mcp/CLAUDE.md /your/case/directory/
# Edit paths in CLAUDE.md to match your case

The LLM will automatically follow the orchestrator-first approach:

Question	Orchestrator Used
"Was malware.exe executed?"	investigate_execution
"What did the user do?"	investigate_user_activity
"Find this hash everywhere"	hunt_ioc
"Build incident timeline"	build_timeline

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Quick Start Examples

Was This Binary Executed?

Investigate if mimikatz.exe was executed on the system at /mnt/evidence

The investigate_execution orchestrator checks Prefetch, Amcache, and SRUM:

{
  "target": "mimikatz.exe",
  "execution_confirmed": true,
  "confidence": "HIGH",
  "evidence": [
    {"source": "Prefetch", "finding": "Executed 3 times, last at 2024-03-15T14:23:45Z"},
    {"source": "Amcache", "finding": "SHA1: abc123..., First seen: 2024-03-14T09:00:00Z"},
    {"source": "SRUM", "finding": "Network: 15.2 MB sent; Foreground: 47 seconds"}
  ]
}

Hunt for IOC Across All Artifacts

Hunt for the hash 204bc44c651e17f65c95314e0b6dfee586b72089 in /mnt/evidence

The hunt_ioc tool searches Prefetch, Amcache, SRUM, MFT, USN, Browser, and EVTX:

{
  "ioc": "204bc44c651e17f65c95314e0b6dfee586b72089",
  "ioc_type": "sha1",
  "found": true,
  "confidence": "HIGH",
  "sources_with_hits": ["Amcache", "MFT"],
  "findings": [
    {"source": "Amcache", "matches": 1, "details": "bloodhound.exe"},
    {"source": "MFT", "matches": 1, "details": "Users\\Admin\\Downloads\\bloodhound.exe"}
  ]
}

User Activity Investigation

What did the user 'Alpha' do on this system? Check /mnt/evidence/Users/Alpha

The investigate_user_activity orchestrator correlates browser, shellbags, LNK, and RecentDocs:

{
  "activity_found": true,
  "confidence": "HIGH",
  "evidence": [
    {"source": "Browser", "finding": "15 visits, 3 downloads (PowerView.ps1, mimikatz.zip)"},
    {"source": "ShellBags", "finding": "42 folders navigated including \\Windows\\Temp"},
    {"source": "LNK Files", "finding": "8 executables, 12 documents accessed"}
  ],
  "timeline": [
    {"time": "2025-01-20T14:30:00Z", "source": "Browser", "event": "Downloaded: mimikatz.zip"},
    {"time": "2025-01-20T14:31:00Z", "source": "ShellBags", "event": "Navigated: Downloads\\mimikatz"}
  ]
}

Detect Timestomping

Find timestomped files in the MFT at /mnt/evidence/$MFT

{
  "total_timestomped": 2,
  "timestomped_files": [
    {
      "path": "Users\\Alpha\\Downloads\\backdoor.exe",
      "si_created": "2019-01-15T10:00:00Z",
      "fn_created": "2025-01-20T14:30:00Z",
      "detection_reason": "$SI created before $FN (impossible without manipulation)"
    }
  ]
}

Analyze Network Traffic

Analyze the PCAP file at /evidence/capture.pcap for suspicious activity

The pcap_find_suspicious tool detects C2 indicators, beaconing, and DNS tunneling:

{
  "total_findings": 5,
  "findings": {
    "suspicious_ports": [
      {"src_ip": "192.168.1.100", "dst_ip": "185.220.101.1", "port": 4444, "reason": "Connection on suspicious port 4444"}
    ],
    "potential_beaconing": [
      {"src_ip": "192.168.1.100", "dst_ip": "10.10.10.10", "connection_count": 48, "avg_interval_seconds": 60.2}
    ],
    "dns_tunneling_indicators": [
      {"query": "aGVsbG8gd29ybGQ.evil.com", "reason": "Unusually long DNS label (45 chars)"}
    ]
  }
}

Detect Packers with DiE

Check if malware.exe is packed using DiE

The die_analyze_file tool detects packers, compilers, and protectors:

{
  "file": "/evidence/malware.exe",
  "file_type": "PE32",
  "arch": "x86",
  "detects": [
    {"type": "Packer", "name": "UPX", "version": "3.96"},
    {"type": "Compiler", "name": "MSVC", "version": "14.0"}
  ],
  "is_packed": true,
  "is_dotnet": false
}

Look Up Hash on VirusTotal

Look up this hash on VirusTotal: d41d8cd98f00b204e9800998ecf8427e

{
  "hash": "d41d8cd98f00b204e9800998ecf8427e",
  "hash_type": "md5",
  "found": true,
  "verdict": "malicious",
  "detection_ratio": "45/72",
  "popular_threat_names": ["Trojan.GenericKD", "Win32/Trojan"],
  "file_type": "Win32 EXE",
  "first_submission": "2024-01-15T10:00:00Z"
}

Scan for Malware with YARA

Scan /mnt/evidence/Users/Admin/Downloads for malware

The yara_scan_directory tool uses 718 rules from signature-base:

{
  "directory": "/mnt/evidence/Users/Admin/Downloads",
  "files_scanned": 47,
  "files_matched": 2,
  "matches": [
    {
      "file": "mimikatz.exe",
      "match_count": 3,
      "matches": [
        {"rule": "Mimikatz_Memory_Rule_1", "namespace": "gen_mimikatz"},
        {"rule": "mimikatz", "namespace": "gen_mimikatz"},
        {"rule": "HKTL_Mimikatz", "namespace": "thor-hacktools"}
      ]
    },
    {
      "file": "beacon.dll",
      "match_count": 1,
      "matches": [
        {"rule": "CobaltStrike_Beacon", "namespace": "apt_cobaltstrike"}
      ]
    }
  ]
}

Import Eric Zimmerman CSV Output

Already ran MFTECmd on Windows? Import the CSV:

Ingest the MFTECmd CSV at /cases/MFTECmd_output.csv and search for .exe files

{
  "csv_type": "mftecmd",
  "total_rows": 193008,
  "filter": {"field": "extension", "value": ".exe"},
  "total_matched": 4308,
  "entries": [...]
}

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Tool Reference

Orchestrators (High-Level Investigation)

Tool	Description
investigate_execution	Correlate Prefetch/Amcache/SRUM to prove binary execution
investigate_user_activity	Correlate Browser/ShellBags/LNK/RecentDocs for user activity
hunt_ioc	Hunt IOC (hash/filename/IP/domain) across all artifacts
build_timeline	Build unified timeline from multiple artifact sources

Execution Artifacts

Tool	Description
file_analyze_pe	Static PE analysis - hashes, imports, exports, packer detection
disk_parse_prefetch	Parse Prefetch for execution evidence
disk_parse_amcache	Parse Amcache.hve for SHA1 hashes and timestamps
disk_parse_srum	Parse SRUDB.dat for app resource and network usage

Malware Detection (YARA)

Tool	Description
yara_scan_file	Scan file with 718 YARA rules (Mimikatz, CobaltStrike, webshells, APT, ransomware)
yara_scan_directory	Batch scan directory for malware
yara_list_rules	List available/bundled YARA rules

Threat Intelligence (VirusTotal)

Tool	Description
vt_lookup_hash	Look up file hash (MD5/SHA1/SHA256) on VirusTotal
vt_lookup_ip	Get IP address reputation and geolocation
vt_lookup_domain	Get domain reputation and categorization
vt_lookup_file	Calculate file hashes and look up on VirusTotal

Network Forensics (PCAP)

Tool	Description
pcap_get_stats	Get PCAP statistics - packet counts, protocols, top talkers
pcap_get_conversations	Extract TCP/UDP conversations with byte counts
pcap_get_dns	Extract DNS queries and responses
pcap_get_http	Extract HTTP requests with URLs, methods, user-agents
pcap_search	Search packet payloads for strings or regex patterns
pcap_find_suspicious	Detect C2 indicators, beaconing, DNS tunneling

Packer Detection (DiE)

Tool	Description
die_analyze_file	Analyze file for packers, compilers, protectors, .NET
die_scan_directory	Batch scan directory for packed executables
die_get_packer_info	Get info about packer (difficulty, unpack tools)

File System

Tool	Description
disk_parse_mft	Parse $MFT with timestomping detection
disk_parse_usn_journal	Parse $J for file operations and deleted files

User Activity

Tool	Description
browser_get_history	Parse Edge/Chrome/Firefox history and downloads
user_parse_lnk_files	Parse Windows shortcuts for target paths
user_parse_shellbags	Parse ShellBags for folder navigation history

Event Logs

Tool	Description
evtx_list_files	List EVTX files in a directory
evtx_get_stats	Get event counts, time range, Event ID distribution
evtx_search	Search with filters (time, Event ID, keywords)
evtx_security_search	Pre-built security event searches (logon, process creation, etc.)
evtx_explain_event_id	Get Event ID description

Registry

Tool	Description
registry_get_key	Get specific key and values
registry_search	Search values by pattern
registry_get_persistence	Get Run keys and services
registry_get_users	Get user accounts from SAM
registry_get_usb_history	Get USB device history
registry_get_system_info	Get OS version, hostname, timezone
registry_get_network	Get network configuration

Utilities

Tool	Description
ingest_parsed_csv	Import Eric Zimmerman CSV output (MFTECmd, PECmd, AmcacheParser, SrumECmd)
forensics_list_important_events	List important Event IDs by channel
forensics_list_registry_keys	List forensic registry keys by category

Remote Collection

Tool	Description
remote_collect_artifacts	Collect artifacts via WinRM (password or pass-the-hash)
remote_get_system_info	Get remote system info

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Typical Investigation Workflow

1. Mount Evidence

mount -o ro,loop /path/to/image.E01 /mnt/evidence
# Or use ewfmount for E01 files

2. Quick Triage

Investigate execution of mimikatz.exe and powershell.exe in /mnt/evidence

3. Hunt for Known IOCs

Hunt for these hashes in /mnt/evidence: abc123..., def456...

4. User Activity Deep Dive

Investigate user activity for 'Administrator' in /mnt/evidence

5. Timeline Analysis

Build a timeline for /mnt/evidence filtering for 'mimikatz'

6. Persistence Check

Check persistence mechanisms in the SYSTEM and SOFTWARE hives

7. Malware Analysis

Scan the Downloads folder for malware with YARA

8. Threat Intelligence

Look up suspicious hashes on VirusTotal
Check if this C2 IP is known malicious: 185.220.101.1

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Configuration

VirusTotal API Key

For threat intelligence lookups, configure your VirusTotal API key:

# Option 1: Environment variable
export VIRUSTOTAL_API_KEY="your-api-key-here"

# Option 2: Config file
mkdir -p ~/.config/winforensics-mcp
echo "your-api-key-here" > ~/.config/winforensics-mcp/vt_api_key

Get your free API key at virustotal.com.

Note: Free tier is rate-limited to 4 requests/minute. The client automatically handles rate limiting and caches results for 24 hours.

Adjusting Response Limits

Edit winforensics_mcp/config.py:

MAX_EVTX_RESULTS = 50       # Event log search results
MAX_REGISTRY_RESULTS = 50   # Registry search results
MAX_PREFETCH_RESULTS = 20   # Prefetch entries
MAX_AMCACHE_RESULTS = 30    # Amcache entries
MAX_TIMELINE_RESULTS = 50   # Timeline events
MAX_MFT_RESULTS = 30        # MFT entries
MAX_USN_RESULTS = 30        # USN Journal records

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Troubleshooting

Missing dependencies

uv pip install pefile libscca-python libesedb-python mft pylnk3

# For YARA scanning
uv pip install yara-python

# For VirusTotal lookups
uv pip install vt-py

VirusTotal API errors

If you see "API key not configured":

# Check if key is set
echo $VIRUSTOTAL_API_KEY

# Or create config file
mkdir -p ~/.config/winforensics-mcp
echo "your-key" > ~/.config/winforensics-mcp/vt_api_key

If you see rate limit errors, wait 15 seconds between requests (automatic) or use cached results.

DiE (Detect It Easy) not found

Install diec (command-line version):

# Debian/Ubuntu
sudo apt install detect-it-easy

# Or download from GitHub
# https://github.com/horsicq/DIE-engine/releases
# Extract and add to PATH

Permission denied on registry hives

Registry hives may be locked. Use offline/copied hives from a mounted image.

Remove MCP Server

claude mcp remove winforensics-mcp --scope user

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Dependencies

All parsing is done with pure Python libraries:

Library	Purpose
python-evtx	EVTX parsing
python-registry	Registry hive parsing
pefile	PE file analysis
libscca-python	Prefetch parsing
libesedb-python	ESE database (SRUM) parsing
mft	MFT parsing (Rust-based, Python bindings)
pylnk3	LNK file parsing
yara-python	YARA rule scanning (optional)
vt-py	VirusTotal API client (optional)
scapy	PCAP/PCAPNG parsing (optional)

Bundled YARA Rules

718 rules from Neo23x0/signature-base are included:

Category	Examples
APT	Lazarus, APT28, APT29, Turla, Sofacy, CobaltStrike
Crimeware	Emotet, TrickBot, Ransomware families
Generic	Mimikatz, webshells, PowerShell obfuscation
Exploits	Log4Shell, ProxyShell, PrintNightmare
Hacktools	BruteRatel, Empire, Metasploit payloads

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Changelog

v0.4.0 - Threat Intel & Network Edition

• YARA Scanning: 718 bundled rules from signature-base (APT, ransomware, hacktools, webshells)
• VirusTotal Integration: Hash/IP/domain lookups with rate limiting and 24h caching
• PCAP Analysis: Network forensics with conversation extraction, DNS/HTTP parsing, C2 detection
• DiE Integration: Packer/compiler detection via Detect It Easy CLI
• New Tools: yara_scan_*, vt_lookup_*, pcap_*, die_*
• Total Tools: 46

v0.3.x

• Core forensics: EVTX, Registry, PE analysis, Prefetch, Amcache, SRUM
• File system: MFT parsing with timestomping detection, USN Journal
• User activity: Browser history, LNK files, ShellBags
• Orchestrators: investigate_execution, investigate_user_activity, hunt_ioc, build_timeline

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License

MIT License

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Author

xtk

Built for the DFIR community. No Windows required.

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