Change all passwords of the host and ensure the use of strong passwords.
Strong passwords should contain upper case letters, lower case letters, digits, punctuation marks, and other symbols. Remove any unrecognizable files, software, or services.
Update your Trend Micro products and pattern files to the latest version.
Scan the host for possible malware detection and to clean any detected items.
To prevent future exploits, ensure that the host and others visible to the external network have their browsers, plugins, and operating systems fully updated with the latest patches. Also, use virtual patching even if the needed patch is still not available for deployment.