diff --git a/Source/UI/Edit/UIEditCtrl.h b/Source/UI/Edit/UIEditCtrl.h
index 2e928a8b..3421d97f 100644
--- a/Source/UI/Edit/UIEditCtrl.h
+++ b/Source/UI/Edit/UIEditCtrl.h
@@ -37,6 +37,8 @@ struct UIEditContext {
 };
 
 class UIEditCtrl : public UIWindow {
+  friend class UIMacroDetectorWnd;
+
 public:
   UIEditCtrl();
   UIEditCtrl(UIWindowContext& windows, UIEditContext& edit);
diff --git a/Source/UI/UICaptchaPreviewWnd.h b/Source/UI/UICaptchaPreviewWnd.h
index d013a148..03014302 100644
--- a/Source/UI/UICaptchaPreviewWnd.h
+++ b/Source/UI/UICaptchaPreviewWnd.h
@@ -8,6 +8,7 @@ class UICaptchaImage;
 class UICaptchaPreviewWnd : public UIFrameWnd {
 public:
   void Paint() override;
+  int SendMsg(UIWindow* sender, int message, std::intptr_t a, std::intptr_t b, std::intptr_t c, std::intptr_t d) override;
 
   void AddImageData(const void* data, int size);
   void ClearImageData();
diff --git a/Source/UI/UIMacroDetectorWnd.cpp b/Source/UI/UIMacroDetectorWnd.cpp
index 895605c6..87bd171c 100644
--- a/Source/UI/UIMacroDetectorWnd.cpp
+++ b/Source/UI/UIMacroDetectorWnd.cpp
@@ -1,5 +1,11 @@
 #include "UI/UIMacroDetectorWnd.h"
+#include "Client/Input/Language.h"
 #include "Contents/MessageTable.h"
+#include "Network/Connection/Connection.h"
+#include "Network/Packets/PacketLengths.h"
+#include "UI/Edit/UIEditCtrl.h"
+#include "UI/UICaptchaPreviewWnd.h"
+#include "UI/Window/WindowManagerWindows.h"
 #include "Utility/Text/FormatString.h"
 
 #include <cstdlib>
@@ -7,6 +13,14 @@
 #include <windows.h>
 #include <timeapi.h>
 
+namespace {
+struct CaptchaAnswerPacket {
+  /* 0000 */ std::int16_t id;
+  /* 0002 */ char text[16];
+};
+static_assert(sizeof(CaptchaAnswerPacket) == 18);
+}
+
 // OFFSET: 0x007EDC00
 // FUNCTION: fn_09814
 void UIMacroDetectorWnd::Slot25(int, int) {
@@ -74,3 +88,33 @@ void UIMacroDetectorWnd::InitImageData(unsigned short size) {
   this->m_imageData = static_cast<unsigned char*>(std::malloc(size));
   std::memset(this->m_imageData, 0, size);
 }
+
+// OFFSET: 0x007EDCF0
+// FUNCTION: fn_09820
+int UICaptchaPreviewWnd::SendMsg(UIWindow* sender, int message, std::intptr_t a, std::intptr_t b, std::intptr_t c, std::intptr_t d) {
+  if (message == 6 && a == 201) {
+    this->m_frameContext->windows.CloseWindow(288);
+  }
+  return UIWindow::SendMsg(sender, message, a, b, c, d);
+}
+
+// OFFSET: 0x007EDD40
+// FUNCTION: fn_09821
+int UIMacroDetectorWnd::SendMsg(UIWindow* sender, int message, std::intptr_t a, std::intptr_t b, std::intptr_t c, std::intptr_t d) {
+  if (message == 0) {
+    this->SendMsg(this, 6, 345, 0, 0, 0);
+  } else if (message == 6) {
+    if (a == 201) {
+      this->m_frameContext->windows.CloseWindow(284);
+    } else if (a == 345 && this->m_editCtrl->Length() != 0 && this->m_lastAnswer != this->m_editCtrl->Text()) {
+      CaptchaAnswerPacket packet;
+      packet.id = 0xA5C;
+      memcpy_s(packet.text, sizeof(packet.text), this->m_editCtrl->Text(), sizeof(packet.text));
+      CRagConnection& connection = GetRagConnection();
+      connection.Send(g_packetLengths.FixedLength(packet.id), &packet);
+      this->m_lastAnswer = this->m_editCtrl->Text();
+      this->m_editCtrl->m_edit->input.ResetInput();
+    }
+  }
+  return UIWindow::SendMsg(sender, message, a, b, c, d);
+}
diff --git a/Source/UI/UIMacroDetectorWnd.h b/Source/UI/UIMacroDetectorWnd.h
index a21e759c..0d73c31a 100644
--- a/Source/UI/UIMacroDetectorWnd.h
+++ b/Source/UI/UIMacroDetectorWnd.h
@@ -6,6 +6,8 @@
 #include <cstdint>
 #include <string>
 
+class UIEditCtrl;
+
 class UIMacroDetectorWnd : public UIFrameWnd {
 public:
   void Slot19() override;
@@ -13,6 +15,7 @@ public:
   void Slot25(int x, int y) override;
   void Slot27(int x, int y) override;
   void Slot31(int x, int y) override;
+  int SendMsg(UIWindow* sender, int message, std::intptr_t a, std::intptr_t b, std::intptr_t c, std::intptr_t d) override;
 
   void sub_8D2CE0(bool closeButton, const char* title, int width);
   void sub_A84360(int x, int y, const char* text, int bytes, int family, int height, std::uint32_t color, unsigned char bold, unsigned char italic);
@@ -31,10 +34,20 @@ public:
   /* 00D4 */ std::uint32_t totalDuration;
   /* 00D8 */ std::uint32_t startTick;
   /* 00DC */ std::uint32_t messageDuration;
-  /* 00E0 */ unsigned char unknown_00E0[0x18];
+  /* 00E0 */ std::string m_lastAnswer;
   /* 00F8 */ std::string message;
   /* 0110 */ std::uint32_t unknown_0110;
   /* 0114 */ std::uint32_t messageTick;
+
+  /* 00B8 */ UIEditCtrl* m_editCtrl;
 };
 
+#if defined(_WIN32) && !defined(_WIN64)
+static_assert(offsetof(UIMacroDetectorWnd, m_captchaKey) == 0xC0);
+static_assert(offsetof(UIMacroDetectorWnd, m_imageData) == 0xC4);
+static_assert(offsetof(UIMacroDetectorWnd, m_lastAnswer) == 0xE0);
+static_assert(offsetof(UIMacroDetectorWnd, message) == 0xF8);
+static_assert(offsetof(UIMacroDetectorWnd, messageTick) == 0x114);
+#endif
+
 #endif