From a7156a7c534232cf527045c9be759d4d8cc31952 Mon Sep 17 00:00:00 2001
From: NYAN CAT <32758426+NYAN-x-CAT@users.noreply.github.com>
Date: Mon, 16 Oct 2023 17:19:22 +0300
Subject: [PATCH] Remove fixed mutex

---
 AsyncRAT-C#/Server/Forms/FormBuilder.cs | 27 ++++++++-----------------
 1 file changed, 8 insertions(+), 19 deletions(-)

diff --git a/AsyncRAT-C#/Server/Forms/FormBuilder.cs b/AsyncRAT-C#/Server/Forms/FormBuilder.cs
index a7fe8ce..195e36d 100644
--- a/AsyncRAT-C#/Server/Forms/FormBuilder.cs
+++ b/AsyncRAT-C#/Server/Forms/FormBuilder.cs
@@ -94,9 +94,6 @@ namespace Server.Forms
                 }
             }
             catch { }
-
-            if (Properties.Settings.Default.Mutex.Length == 0)
-                txtMutex.Text = getRandomCharacters();
         }
 
 
@@ -190,6 +187,8 @@ namespace Server.Forms
 
             if (chkPastebin.Checked && string.IsNullOrWhiteSpace(txtPastebin.Text)) return;
 
+            if (string.IsNullOrWhiteSpace(txtMutex.Text)) txtMutex.Text = Helper.Methods.GetRandomString(12);
+
             ModuleDefMD asmDef = null;
             try
             {
@@ -430,7 +429,7 @@ namespace Server.Forms
 
                                     if (method.Body.Instructions[i].Operand.ToString() == "%MTX%")
                                         if (string.IsNullOrWhiteSpace(txtMutex.Text))
-                                            method.Body.Instructions[i].Operand = getRandomCharacters();
+                                            method.Body.Instructions[i].Operand = Helper.Methods.GetRandomString(12);
                                         else
                                             method.Body.Instructions[i].Operand = aes.Encrypt(txtMutex.Text);
 
@@ -468,21 +467,6 @@ namespace Server.Forms
             }
         }
 
-
-        private readonly Random random = new Random();
-        const string alphabet = "asdfghjklqwertyuiopmnbvcxz";
-
-        public string getRandomCharacters()
-        {
-            var sb = new StringBuilder();
-            for (int i = 1; i <= new Random().Next(10, 20); i++)
-            {
-                var randomCharacterPosition = random.Next(0, alphabet.Length);
-                sb.Append(alphabet[randomCharacterPosition]);
-            }
-            return sb.ToString();
-        }
-
         private void BtnClone_Click(object sender, EventArgs e)
         {
             using (var openFileDialog = new OpenFileDialog())
@@ -505,5 +489,10 @@ namespace Server.Forms
                 }
             }
         }
+
+        private void txtMutex_MouseEnter(object sender, EventArgs e)
+        {
+            txtMutex.Text = Helper.Methods.GetRandomString(12);
+        }
     }
 }
\ No newline at end of file