I realize this is an old question - but I just had success filtering Windows Applocker event logs that have renderXml = true set, just by using the key's listed under the "Event Log whitelist and blacklist formats" listed [props.conf] docs1
In my case I wanted to filter out Applocker events where the file was allowed (to help us reduce license usage, because moving to XML increased the event size by 3 times on average). I tried several things, but finally just attempted the standard blacklist = EventCode="8002" and it worked!
So it would seem that the whitelist and blacklisting is still done on the plain text version of the event, not the XML one that actually gets forwarded down the pipeline.
Hope this helps!
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