Please help to identify the following description belonging to which technique in MITRE and the corresponding tactics: RAPIDPULSE listens for specific HTTP query parameters in received communications. If specific parameters match, a hard-coded RC4 key is used to decrypt the HTTP query paremter <code>hmacTime</code>. This decrypts to a filename that is then open, read, encrypted with the same RC4 key, base64-encoded, written to standard out, then passed as a response to the HTTP request.