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defense-evasion

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Endpoint defense bypass — AMSI/ETW patching, ScareCrow framework, custom loaders, direct/indirect syscalls, LOLBAS execution, process injection.

packages/decepticon/decepticon/skills/shared/defense-evasion/SKILL.md

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# Defense Evasion Knowledge Base

Defense evasion techniques disable, bypass, or avoid endpoint security controls (AV, EDR, AMSI, ETW) to ensure payloads execute and implants persist without detection. Every technique here has a shelf life --- detections evolve constantly. Always test against the target's specific stack before deployment.

## Quick Reference

| Task | Technique | Risk Level |
|------|-----------|------------|
| Disable AMSI | Memory patch `AmsiScanBuffer` | Medium |
| Disable AMSI (stealthier) | Hardware breakpoint on `AmsiScanBuffer` | Low |
| Disable ETW | Patch `EtwEventWrite` | Medium |
| Unhook EDR DLLs | ScareCrow / manual ntdll reload | High |
| Generate evasive payload | ScareCrow with AES encryption | Medium |
| Execute via LOLBAS | mshta, certutil, rundll32, regsvr32 | Varies |