go-inject

Process injection techniques written in Go. I've also expanded this repo to include some general offense techniques in Go.

Techniques

• Classic virtual alloc
• Heap
• Remote Thread Injection
• APC Queue Code Injection
• UUID Injection - Used by Lazarus 2021
• Hook detection
• Keylogger
• Hollow
• API Hashing

Usage

Use msfvenom or any other tool to generate hex encoded shellcode:

msfvenom -p windows/x64/exec CMD=calc.exe -f hex

Place hex encoded payload within one of the example .go files replacing the content of the payload variable. You can cross compile on Linux using the following: Linux:

env GOOS=windows go build -ldflags="-s -w" -trimpath examples/x64/uuid/uuid.go

Detection

I've written a few simple yara rules to detect binaries using go-inject:

Yara ruleset

I also recommend using Sysmon event ids 8 (CreateRemoteThread) and 25 (ProcessTampering) for detection.

References

• https://blog.sunggwanchoi.com/eng-uuid-shellcode-execution/
• https://github.com/Adepts-Of-0xCC/VBA-macro-experiments/blob/main/EDRHookDetector.vba
• https://github.com/brimstone/go-shellcode
• https://github.com/sysdream/hershell
• https://github.com/yoda66/MalwareDevTalk
• https://labs.jumpsec.com/2019/06/20/bypassing-antivirus-with-golang-gopher-it/
• https://medium.com/@justen.walker/breaking-all-the-rules-using-go-to-call-windows-api-2cbfd8c79724
• https://posts.specterops.io/adventures-in-dynamic-evasion-1fe0bac57aa
• https://research.nccgroup.com/2021/01/23/rift-analysing-a-lazarus-shellcode-execution-method/
• https://www.ired.team/offensive-security/code-injection-process-injection/apc-queue-code-injection
• https://github.com/abdullah2993/go-runpe