java/agent m.1

This is likely just an insignificant item found in your Java cache. If Avira already removed it then you really have nothing to worry about, but you could just empty your Java cache too.

Start > Settings > Control Panel and double click the Java icon (be patient, it may take a while to open) Now click the General tab and under the Temporary Internet File area Click the Settings button and then click the Delete Files... button. In the next popup click OK.

If you have multiple Java plugin icons in Control Panel follow the above to clear all their caches

 

As stated, it is just something in your Java cache and unless you are having other problems on your PC then this is not likely even a problem. The DyesyasZ.class file probably just has code in it that has not been updated and could have security holes in it.