analyzing-powershell-empire-artifacts
Detect PowerShell Empire post-exploitation framework artifacts in Windows Script Block Logging (Event ID 4104) and Module Logging (Event ID 4103), including the default launcher string, Base64-encoded WebClient/FromBase64String payloads, known module invocations (Invoke-Mimikatz, Invoke-Kerberoast), and staging URL patterns. Use when hunting for or confirming Empire C2 activity in Windows event logs.
ソース情報
- リポジトリ
- mukul975/Anthropic-Cybersecurity-Skills
- ソースの最終更新活動
- 2026年8月2日 16:32
- 検出された SKILL.md の言語
- 英語
- スター
- 33,552
- フォーク
- 4,068
インストール方法
デフォルトでは、最初にソースを確認する Prompt が選択されています。直接コマンドに切り替えるか、ローカルコピーをダウンロードすることもできます。
ソースファイルを確認
インストールを決める前に、SKILL.md と SkillsMP に表示されている付属ファイルをお読みください。
ファイルエクスプローラー
4 ファイルSKILL.md を表示中
SKILL.md
ソースの指示 · 読み取り専用プレビュー- name
- analyzing-powershell-empire-artifacts
- description
- Detect PowerShell Empire post-exploitation framework artifacts in Windows Script Block Logging (Event ID 4104) and Module Logging (Event ID 4103), including the default launcher string, Base64-encoded WebClient/FromBase64String payloads, known module invocations (Invoke-Mimikatz, Invoke-Kerberoast), and staging URL patterns. Use when hunting for or confirming Empire C2 activity in Windows event logs.
- domain
- cybersecurity
- subdomain
- threat-hunting
- tags
- ["PowerShell-Empire","threat-hunting","Script-Block-Logging","base64","stager","C2","MITRE-ATT&CK","T1059.001","forensics"]
- version
- 1.0
- author
- mahipal
- license
- Apache-2.0
- d3fend_techniques
- ["Executable Denylisting","Execution Isolation","File Metadata Consistency Validation","Content Format Conversion","File Content Analysis"]
- nist_ai_rmf
- ["GOVERN-1.1","MEASURE-2.7","MANAGE-3.1"]
- nist_csf
- ["DE.CM-01","DE.AE-02","DE.AE-07","ID.RA-05"]
- mitre_attack
- ["T1059.001","T1071.001","T1003.001","T1558.003","T1027.010"]
# 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
1. **Default launcher** — `powershell -noP -sta -w 1 -enc` followed by Base64 blob
2. **Stager indicators** — `System.Net.WebClient`, `DownloadData`, `DownloadString`, `FromBase64String`
3. **Module signatures** — Invoke-Mimikatz, Invoke-Kerberoast, Invoke-TokenManipulation, Invoke-PSInject, Invoke-DCOM
4. **User agent strings** — default Empire user agents in HTTP listener configuration
5. **Staging URLs** — `/login/process.php`, `/admin/get.php` and 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.
GitHubで見る