seikaikyo/parsing-artifacts-with-eric-zimmerman-tools
external/anthropic-cybersecurity-skills/skills/parsing-artifacts-with-eric-zimmerman-tools/SKILL.md
Parse Windows forensic artifacts—$MFT/$J (MFTECmd), Prefetch (PECmd), registry hives (RECmd), shellbags, and Amcache—into normalized CSV/JSON with Eric Zimmerman's EZ Tools, then load results into Timeline Explorer for analysis. Use during DFIR/incident-response investigations, after triage collection (e.g. with KAPE), to establish program execution, file/folder access, and persistence evidence from acquired forensic images.
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SKILL.md
- name:
- parsing-artifacts-with-eric-zimmerman-tools
- description:
- Parse Windows forensic artifacts—$MFT/$J (MFTECmd), Prefetch (PECmd), registry hives (RECmd), shellbags, and Amcache—into normalized CSV/JSON with Eric Zimmerman's EZ Tools, then load results into Timeline Explorer for analysis. Use during DFIR/incident-response investigations, after triage collection (e.g. with KAPE), to establish program execution, file/folder access, and persistence evidence from acquired forensic images.
- domain:
- cybersecurity
- subdomain:
- digital-forensics
- version:
- 1.0
- author:
- mahipal
- license:
- Apache-2.0
Parsing Artifacts with Eric Zimmerman Tools
Authorized Use Only: These tools parse evidence acquired from systems. Only analyze data you are authorized to handle, maintain chain of custody, and work from forensic copies rather than originals.
Overview
Eric Zimmerman's Tools (EZ Tools) are a free, open-source suite of high-fidelity Windows forensic parsers, each focused on a specific artifact class and each producing analyst-ready CSV/JSON output. They are the de facto standard for Windows artifact analysis and are what KAPE's !EZParser module invokes under the hood. Key tools include:
- MFTECmd — parses
$MFT,$J($UsnJrnl),$Boot,$SDS, and$LogFilefrom NTFS volumes. - PECmd — parses Windows Prefetch (
.pf) for evidence of program execution. - RECmd — registry hive parser/searcher driven by batch plugins (RECmd Batch files).
- SBECmd — parses ShellBags (folder access history) from
UsrClass.dat/NTUSER.DAT. - AmcacheParser — parses
Amcache.hvefor application execution and metadata. - AppCompatCacheParser — parses ShimCache (AppCompatCache) from
SYSTEMhive. - LECmd — parses LNK shortcut files. JLECmd — parses Jump Lists. EvtxECmd — parses EVTX event logs to a normalized schema.
Output is designed to load into Timeline Explorer (also by Eric Zimmerman), a fast CSV/Excel viewer purpose-built for filtering, tagging, and pivoting across forensic CSVs. The 2025+ releases run on .NET and also work natively on Linux.
When to Use
- After triage collection (e.g. with KAPE) when you need to parse raw artifacts into structured, searchable evidence.
- To establish program execution, file/folder access, and persistence during incident response.
- To build artifact-specific CSVs that feed timelines, Timesketch, or SIEM ingestion.
Prerequisites
- Download EZ Tools via the official downloader (keeps tools current):
Source: https://ericzimmerman.github.io/ and https://github.com/EricZimmerman/Get-ZimmermanTools# Download/update all .NET 6 tools into C:\Tools\EZ .\Get-ZimmermanTools.ps1 -Dest C:\Tools\EZ - .NET runtime (bundled with current releases).
- Forensic copies of the artifacts (mounted image, KAPE collection, or extracted hives).
Objectives
- Parse the MFT, prefetch, shellbags, registry, and amcache from a collection.
- Produce normalized CSV/JSON per artifact.
- Load results into Timeline Explorer for analysis.
- Establish execution and access evidence supporting the investigation.
MITRE ATT&CK Mapping
| ID | Official Technique Name | Relevance to this skill | |----|------------------------|--------------------------| | T1112 | Modify Registry | RECmd, AmcacheParser, and AppCompatCacheParser parse registry-resident artifacts; analysts use them to detect adversary registry modification (persistence, defense evasion) recorded in hives. |
These are defensive parsers; the mapping reflects the artifact (registry) most relevant to the adversary behavior they help uncover.
Workflow
1. Download/update the tools
Keep parsers current so they handle the latest artifact formats.
.\Get-ZimmermanTools.ps1 -Dest C:\Tools\EZ
2. Parse the MFT for file-system activity
-f points at a single $MFT; --csv sets the output directory and --csvf the filename. Add --csvf for $J/UsnJrnl with -f $J.
MFTECmd.exe -f "E:\collection\C\$MFT" --csv "E:\out\mft" --csvf MFT.csv
REM Parse the USN Journal change log
MFTECmd.exe -f "E:\collection\C\$Extend\$J" --csv "E:\out\mft" --csvf UsnJrnl.csv
3. Parse Prefetch for execution evidence
-d recurses a directory of .pf files. Output CSV + JSON.
PECmd.exe -d "E:\collection\C\Windows\Prefetch" --csv "E:\out\prefetch" --csvf Prefetch.csv --json "E:\out\prefetch\json"
4. Parse ShellBags for folder-access history
-d points at the directory containing the user's UsrClass.dat/NTUSER.DAT (or -f a single hive).
SBECmd.exe -d "E:\collection\C\Users\jsmith" --csv "E:\out\shellbags"
5. Parse the registry with RECmd batch plugins
RECmd is driven by batch files (--bn) that bundle plugins; the Kroll_Batch file is comprehensive. -d recurses a directory of hives.
RECmd.exe -d "E:\collection\C\Windows\System32\config" --bn "C:\Tools\EZ\RECmd\BatchExamples\Kroll_Batch.reb" --csv "E:\out\registry" --csvf Registry.csv
REM Search a single hive for a value/key
RECmd.exe -f "E:\collection\C\Users\jsmith\NTUSER.DAT" --sk "Run" --csv "E:\out\registry"
6. Parse Amcache and ShimCache
AmcacheParser.exe -f "E:\collection\C\Windows\AppCompat\Programs\Amcache.hve" --csv "E:\out\amcache" -i
AppCompatCacheParser.exe -f "E:\collection\C\Windows\System32\config\SYSTEM" --csv "E:\out\shimcache"
7. Parse LNK, Jump Lists, and EVTX
LECmd.exe -d "E:\collection\C\Users\jsmith\AppData\Roaming\Microsoft\Windows\Recent" --csv "E:\out\lnk"
JLECmd.exe -d "E:\collection\C\Users\jsmith\AppData\Roaming\Microsoft\Windows\Recent\AutomaticDestinations" --csv "E:\out\jumplists"
EvtxECmd.exe -d "E:\collection\C\Windows\System32\winevt\Logs" --csv "E:\out\evtx" --csvf EventLogs.csv
8. Analyze in Timeline Explorer
Open the resulting CSVs in Timeline Explorer (TimelineExplorer.exe). Use column filters, conditional formatting, and tagging to pivot on time, file path, and user. CSVs from all EZ Tools share consistent timestamp columns for cross-artifact correlation.
9. Cross-correlate
Build a working theory by correlating PECmd (execution time) with MFTECmd (file creation), Amcache/ShimCache (program presence), and ShellBags/LNK (access), all anchored on UTC timestamps.
Tools and Resources
| Tool | Artifact parsed | Link | |------|-----------------|------| | MFTECmd | $MFT, $J, $Boot, $SDS, $LogFile | https://github.com/EricZimmerman/MFTECmd | | PECmd | Prefetch | https://github.com/EricZimmerman/PECmd | | RECmd | Registry hives | https://github.com/EricZimmerman/RECmd | | SBECmd | ShellBags | https://github.com/EricZimmerman/Shellbags | | AmcacheParser | Amcache.hve | https://github.com/EricZimmerman/AmcacheParser | | AppCompatCacheParser | ShimCache | https://github.com/EricZimmerman/AppCompatCacheParser | | LECmd / JLECmd | LNK / Jump Lists | https://ericzimmerman.github.io/ | | EvtxECmd | EVTX event logs | https://github.com/EricZimmerman/evtx | | Timeline Explorer | CSV analysis viewer | https://ericzimmerman.github.io/ | | Get-ZimmermanTools | Downloader/updater | https://github.com/EricZimmerman/Get-ZimmermanTools |
Common Flags
| Flag | Meaning |
|------|---------|
| -f <file> | Parse a single file |
| -d <dir> | Recurse a directory |
| --csv <dir> | CSV output directory |
| --csvf <name> | CSV output filename |
| --json <dir> | JSON output directory |
| --bn <file> | RECmd batch (.reb) file |
| -i | AmcacheParser: include file entries (unassociated) |
Validation Criteria
- [ ] EZ Tools downloaded/updated via Get-ZimmermanTools
- [ ] $MFT (and $J) parsed to CSV
- [ ] Prefetch parsed for execution evidence
- [ ] ShellBags parsed for folder-access history
- [ ] Registry parsed with Kroll_Batch (RECmd)
- [ ] Amcache and ShimCache parsed
- [ ] LNK/Jump Lists/EVTX parsed as needed
- [ ] Output loaded and reviewed in Timeline Explorer
- [ ] Cross-artifact correlation performed on UTC timestamps
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