Process Hollowing

Hollow with Shellcode

• https://github.com/chvancooten/OSEP-Code-Snippets/blob/main/Shellcode%20Process%20Hollowing/Program.cs

• https://github.com/S3cur3Th1sSh1t/Creds/blob/master/Csharp/DinvokeProcessHollow.cs

1. Create the target process (e. g., svchost.exe) in a suspended state.

2. Query created process to extract its base address pointer from PEB (Process Environment Block).

3. Read 8 bytes of memory (for 64-bit architecture) pointed by the image base address pointer in order to get the actual value of the image base address.

4. Read 0x200 bytes of the loaded EXE image and parse PE structure to get the EntryPoint address.

5. Write the shellcode to the EntryPoint address and resume thread execution.

Hollow with EXE

• https://github.com/m0n0ph1/Process-Hollowing

• https://gist.github.com/gnh1201/6a3836468c898f7ad3a3656e6f24dce3

• https://www.ired.team/offensive-security/code-injection-process-injection/process-hollowing-and-pe-image-relocations