EDR Evasion

Bypassing User-land Hooks

Unhooking

• MapModuleToMemory from C# D/Invoke

Direct Syscall

• Memory (HellsGate, HaloGate, TartarusGate, RecycledGate)

• Disk (GetSyscallStub from C# D/Invoke)

• Embedded (SysWhispers 1, 2, 3)

Hardware Breakpoints

• TamperingSyscalls2

DLL Entry Point Patching

• SharpBlock

Process Mitigation Policy

• Blockdlls

Behavior Detection

Call Stack Spoofing

• Synthetic Stackframe (Draugr)

Module Stomping

Entropy Detection

• Adding Non-Random Data

  • Dictionary Words

  • 0x00 Padding

• Use Encoding & Avoid Encryption

  • UUID Encoding

  • Emojis

• Avoid Embedding Payload

  • Retrieve From File

  • Fetch Remotely

Experimental EDR

• SylantStrike

• Sanctum