This is just a guess, but try org.jboss.ws.core for the category. I'm not sure how the loggers are defined.
James R. Perkins
We have tried this amongst other things to no avail. The search for answers continues
You need to place the following below code in the standalone.xml/domain.xml after the 'extensions'
<property name="org.apache.cxf.logging.enabled" value="true"/>