Logstash replace escape chars in messages

What is the best way and syntax to replace ESC chars from my logs....

06/27/16 14:11:30.888 D S10.10.64.83 STREAMER 0 @IAAAAAAAJOGABHHF ^[[01;37;44mFX_Ingestion_Media_Session_Stop_Command::dump_command^[[00;39;49m

Are we talking about actual non-printable escape sequences or the text representation of them as visible in your example?