Forensic Investigation Report

Instructions: Fill in all sections. Every factual claim must cite at least one [EV-XXXX] evidence ID. Remove placeholder text and instruction notes before finalizing. Redact all secrets to [REDACTED].

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Executive Summary

Target Repository: OWNER/REPO Investigation Period: YYYY-MM-DD to YYYY-MM-DD Verdict: <!-- Compromised / Clean / Inconclusive --> Confidence Level: <!-- High / Medium / Low --> Report Date: YYYY-MM-DD Investigator: <!-- Agent session ID or analyst name -->

<!-- One paragraph: what was investigated, what was found, what is recommended. -->

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Timeline of Events

All timestamps in UTC. Each event must cite at least one evidence ID.

Timestamp (UTC)	Event	Evidence IDs	Source
YYYY-MM-DDTHH:MM:SSZ	Describe event	[EV-XXXX]	git / gh_api / gh_archive / web_archive

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Validated Hypotheses

Hypothesis 1: <!-- Short title -->

Status: <!-- VALIDATED / INCONCLUSIVE / REJECTED -->

Claim: Full statement of the hypothesis.

Supporting Evidence:

• [EV-XXXX]: What this evidence shows
• [EV-YYYY]: What this evidence shows

Counter-Evidence Considered: What might disprove this, and why it was ruled out or not.

Confidence: <!-- High / Medium / Low, and why -->

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Indicators of Compromise (IOC List)

Type	Value	Status	Evidence
COMMIT_SHA	abc123...	Confirmed malicious	[EV-XXXX]
ACTOR_USERNAME	handle	Suspected compromised	[EV-YYYY]
FILE_PATH	src/evil.js	Confirmed malicious	[EV-ZZZZ]
DOMAIN	evil-cdn.io	Confirmed C2	[EV-WWWW]

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Affected Versions

Version / Tag	Published	Contains Malicious Code	Evidence
v1.2.3	YYYY-MM-DD	Yes / No / Unknown	[EV-XXXX]

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Evidence Registry

Generated by: python3 SKILL_DIR/scripts/evidence-store.py --store evidence.json export

<!-- Paste the Markdown table output from the evidence-store.py export command here -->

ID	Type	Source	Actor	Verification	Event Timestamp	URL
EV-0001

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Chain of Custody

Generated by: python3 SKILL_DIR/scripts/evidence-store.py --store evidence.json export

<!-- Paste the chain of custody section from the export output here -->

Evidence ID	Action	Timestamp	Source
EV-0001	add

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Technical Findings

Git History Analysis

Summarize findings from local git analysis: dangling commits, reflog anomalies, unsigned commits, binary additions, etc.

GitHub API Analysis

Summarize findings from GitHub REST API: deleted PRs/issues, contributor changes, release anomalies, etc.

GitHub Archive Analysis

Summarize findings from BigQuery: force-push events, delete events, workflow anomalies, member changes, etc. Note: If BigQuery was unavailable, state this explicitly.

Wayback Machine Analysis

Summarize findings from archive.org: recovered deleted pages, historical content differences, etc.

IOC Enrichment

Summarize enrichment results: WHOIS data for domains, recovered commit content, actor account analysis, etc.

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Recommendations

Immediate Actions (If Compromise Confirmed)

• Rotate all GitHub tokens, API keys, and credentials that may have been exposed
• Pin dependency versions to hashes in all affected packages
• Publish a security advisory / CVE if applicable
• Notify downstream users/package registries (npm, PyPI, etc.)
• Revoke access for the compromised account and re-secure with hardware 2FA
• Audit all CI/CD workflow files for unauthorized modifications
• Review all releases published during the compromise window

Monitoring Recommendations

• Enable branch protection on main/master (require code review, disallow force-push)
• Enable required commit signing (GPG/SSH)
• Set up GitHub audit log streaming for future monitoring
• Pin critical dependencies to known-good SHAs in lock files

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Limitations and Caveats

• List any data sources that were unavailable (e.g., no BigQuery access)
• Note any evidence that is single-source only (not independently verified)
• Note any hypotheses that could not be confirmed or denied

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References

• Evidence store: evidence.json (SHA-256 integrity: run python3 SKILL_DIR/scripts/evidence-store.py --store evidence.json verify)
• Related issues: <!-- Link to GitHub issues, CVEs, security advisories -->
• RAPTOR framework: https://github.com/gadievron/raptor