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aniket2348823/Vul-Agent2Updated Jun 9, 2026
FreePublished on GitHub
analyzing-powershell-empire-artifacts
Detect PowerShell Empire framework artifacts in Windows event logs by identifying Base64 encoded launcher patterns, default user agents, staging URL structures, stager IOCs, and known Empire module signatures in Script Block Logging events.
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See how to installFiles included (4)
- SKILL.md2.6 KB
- LICENSE11.0 KB
- references/api-reference.md3.3 KB
- scripts/agent.py10.6 KB
SKILL.md (original)
Review the instructions the agent will receive before you install.
Analyzing PowerShell Empire Artifacts
Overview
PowerShell Empire is a post-exploitation framework consisting of listeners, stagers, and agents. Its artifacts leave detectable traces in Windows event logs, particularly PowerShell Script Block Logging (Event ID 4104) and Module Logging (Event ID 4103). This skill analyzes event logs for Empire's default launcher string (powershell -noP -sta -w 1 -enc), Base64 encoded payloads containing System.Net.WebClient and FromBase64String, known module invocations (Invoke-Mimikatz, Invoke-Kerberoast, Invoke-TokenManipulation), and staging URL patterns.
When to Use
- When investigating security incidents that require analyzing powershell empire artifacts
- When building detection rules or threat hunting queries for this domain
- When SOC analysts need structured procedures for this analysis type
- When validating security monitoring coverage for related attack techniques
Prerequisites
- Python 3.9+ with access to Windows Event Log or exported EVTX files
- PowerShell Script Block Logging (Event ID 4104) enabled via Group Policy
- Module Logging (Event ID 4103) enabled for comprehensive coverage
Key Detection Patterns
- Default launcher —
powershell -noP -sta -w 1 -encfollowed by Base64 blob - Stager indicators —
System.Net.WebClient,DownloadData,DownloadString,FromBase64String - Module signatures — Invoke-Mimikatz, Invoke-Kerberoast, Invoke-TokenManipulation, Invoke-PSInject, Invoke-DCOM
- User agent strings — default Empire user agents in HTTP listener configuration
- Staging URLs —
/login/process.php,/admin/get.phpand similar default URI patterns
Output
JSON report with matched IOCs, decoded Base64 payloads, timeline of suspicious events, MITRE ATT&CK technique mappings, and severity scores.
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