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+# Technique Name: System Binary Proxy Execution: Rundll32
+
+## Author Information: Dino Dunn
+
+- Nickname: Dino 
+- First Name: Dino 
+- Last Name: Dunn
+- GitHub: https://github.com/db0109
+- LinkedIn: https://www.linkedin.com/in/dino-dunn-cyber/
+
+## Technique Information
+
+- Technique Category:  Defense Evasion [MITRE]/ System Binary Proxy Execution Rundll32
+- Technique Tags: #Defense Evasion #rundll32.exe {DLLname DLLfunction}
+- Technique General Detail: Adveraries abused rundll32.exe to proxy executtion of malicious code, the goal is to bypass security tools by utilizing a legitimate process. for our example we will run a simple .dll file that displays an Ascii cat as a proof of concept. 
+
+```
+> Utilizing RunDLL32.exe a trusted windows binary, attackers are able to execute code within a potentially malicious .dll file. This can allow attackers to bypass security tools as it is being run with a trusted windows binary. 
+
+~Markdown Supported~
+```rundll32.exe evil.dll, run'''
+
+* Technique Platform Specific Detail: Optional
+
+@Windows:
+```
+> Start with creating a .dll file with malicious code in it. Our example .dll file is going to produce an Ascii cat but can be used for any number of malicious purpouses. 
+
+~Markdown Supported~
+```
+
+
+- [Resource 1]https://github.com/PacktPublishing/Malware-Development-for-Ethical-Hackers/blob/main/chapter01/04-pefile-exe-dll/hack4.c  (You can find a precompiled version of the file here if you don't want to compile it https://github.com/PacktPublishing/Malware-Development-for-Ethical-Hackers/blob/main/chapter02/01-traditional-injection/evil.dll)
+- [Resource 2]https://hadess.io/system-binary-proxy-execution/
+- ...
+- [Resource n]https://attack.mitre.org/techniques/T1218/011/ 
+- [Resource 4] rundll32.exe evil.dll, run
+
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diff --git a/techniques/System Binary Proxy Execution: Rundll32/hack4.c b/techniques/System Binary Proxy Execution: Rundll32/hack4.c
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+/*
+ * Malware Development for Ethical Hackers
+ * hack4.c
+ * simple DLL
+ * author: @cocomelonc
+*/
+#include <windows.h>
+#pragma comment (lib, "user32.lib")
+
+BOOL APIENTRY DllMain(HMODULE moduleHandle, DWORD actionReason, LPVOID reservedPointer) {
+  switch (actionReason) {
+  case DLL_PROCESS_ATTACH:
+  MessageBox(
+    NULL,
+    "Hello from evil.dll!",
+    "=^..^=",
+    MB_OK
+  );
+  break;
+  case DLL_PROCESS_DETACH:
+  break;
+  case DLL_THREAD_ATTACH:
+  break;
+  case DLL_THREAD_DETACH:
+  break;
+  }
+  return TRUE;
+}