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https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git
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mukul975
c47eed6a64
- Fix 25 shell=True subprocess calls with list-based commands - Fix 49 verify=False in defensive skills (env-var override) - Add timeout to 231 HTTP/subprocess/socket calls - Fix 6 SQL injection patterns with whitelist validation - Replace 8 __import__() with standard imports - Remove 701 unused imports across 442 files - Add authorized-testing disclaimers to all offensive skills - Complete 11 incomplete skill directories - Expand 10 stub SKILL.md files with full content - Fix 2 YAML parse errors in frontmatter - Fix 5 pre-existing syntax errors - Convert 22 hardcoded paths/ports to environment variables - Back up 21 redundant skill pairs to .bak - Fix 2 global declaration errors - 724/724 skills with full folder anatomy (SKILL.md + agent.py + api-reference.md + LICENSE) - 0 compile errors across all 724 agent.py files
139 lines
3.9 KiB
Markdown
139 lines
3.9 KiB
Markdown
# API Reference: Anti-Ransomware Group Policy
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## AppLocker PowerShell Cmdlets
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### Get Effective Policy
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```powershell
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Get-AppLockerPolicy -Effective | Select-Object -ExpandProperty RuleCollections
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```
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### Create AppLocker Rule
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```powershell
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# Deny executables from AppData paths
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New-AppLockerPolicy -RuleType Path -RuleNamePrefix "DenyAppData" `
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-Path "%USERPROFILE%\AppData\*" -Action Deny -User Everyone
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```
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### Test AppLocker Policy
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```powershell
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Test-AppLockerPolicy -Path "C:\Users\test\AppData\Local\Temp\malware.exe" `
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-XmlPolicy (Get-AppLockerPolicy -Effective -Xml)
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```
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### AppLocker Event Log IDs
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| Event ID | Log | Description |
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|----------|-----|-------------|
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| 8003 | AppLocker/EXE | Allowed executable |
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| 8004 | AppLocker/EXE | Blocked executable |
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| 8005 | AppLocker/Script | Allowed script |
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| 8006 | AppLocker/Script | Blocked script |
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| 8007 | AppLocker/MSI | Allowed installer |
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| 8008 | AppLocker/MSI | Blocked installer |
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## Controlled Folder Access (CFA)
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### Enable CFA
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```powershell
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Set-MpPreference -EnableControlledFolderAccess Enabled
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```
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### CFA Modes
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| Value | Mode | Description |
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|-------|------|-------------|
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| 0 | Disabled | No protection |
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| 1 | Enabled | Block unauthorized modifications |
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| 2 | Audit | Log but do not block |
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| 6 | BlockDiskModificationOnly | Block disk-level changes only |
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### Add Protected Folders
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```powershell
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Add-MpPreference -ControlledFolderAccessProtectedFolders "C:\Finance"
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```
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### Add Allowed Applications
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```powershell
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Add-MpPreference -ControlledFolderAccessAllowedApplications "C:\Program Files\App\app.exe"
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```
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### CFA Event IDs
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| Event ID | Log | Description |
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|----------|-----|-------------|
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| 1123 | Defender/Operational | Blocked file modification |
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| 1124 | Defender/Operational | Audited file modification |
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## Attack Surface Reduction (ASR) Rules
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### Enable ASR Rule
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```powershell
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Add-MpPreference -AttackSurfaceReductionRules_Ids <GUID> `
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-AttackSurfaceReductionRules_Actions Enabled
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```
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### ASR Rule Actions
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| Value | Action |
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|-------|--------|
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| 0 | Disabled |
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| 1 | Block |
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| 2 | Audit |
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| 6 | Warn |
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### Key Anti-Ransomware ASR Rule GUIDs
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| GUID | Rule |
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|------|------|
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| BE9BA2D9-53EA-4CDC-84E5-9B1EEEE46550 | Block executable content from email |
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| D4F940AB-401B-4EFC-AADC-AD5F3C50688A | Block Office child processes |
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| 3B576869-A4EC-4529-8536-B80A7769E899 | Block Office executable content creation |
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| 75668C1F-73B5-4CF0-BB93-3ECF5CB7CC84 | Block Office code injection |
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| D3E037E1-3EB8-44C8-A917-57927947596D | Block JS/VBS downloaded executables |
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| 5BEB7EFE-FD9A-4556-801D-275E5FFC04CC | Block obfuscated scripts |
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| 92E97FA1-2EDF-4476-BDD6-9DD0B4DDDC7B | Block Win32 API from Office macros |
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### ASR Event IDs
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| Event ID | Log | Description |
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|----------|-----|-------------|
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| 1121 | Defender/Operational | ASR rule fired in block mode |
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| 1122 | Defender/Operational | ASR rule fired in audit mode |
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## GPO Paths Reference
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### AppLocker
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```
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Computer Configuration → Policies → Windows Settings →
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Security Settings → Application Control Policies → AppLocker
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```
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### Controlled Folder Access
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```
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Computer Configuration → Administrative Templates →
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Windows Components → Microsoft Defender Antivirus →
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Microsoft Defender Exploit Guard → Controlled Folder Access
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```
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### Attack Surface Reduction
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```
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Computer Configuration → Administrative Templates →
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Windows Components → Microsoft Defender Antivirus →
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Microsoft Defender Exploit Guard → Attack Surface Reduction
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```
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### Network Restrictions
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```
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Computer Configuration → Administrative Templates →
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Network → Lanman Workstation (SMB settings)
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Windows Components → Remote Desktop Services (RDP settings)
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Windows Components → AutoPlay Policies (AutoPlay/AutoRun)
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```
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## GPResult Verification
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```powershell
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# Check applied GPOs
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gpresult /r /scope:computer
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# Generate HTML report
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gpresult /h gpo_report.html
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# Check specific policy RSoP
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gpresult /z /scope:computer
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```
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