Any idea what they are targetting in Java?
I wonder because of the recent java update and little to no talk about anything new
As Gerhard said - they exploit CVE-2008-5353
The Java Runtime Environment (JRE) for Sun JDK and JRE 6 Update 10 and earlier; JDK and JRE 5.0 Update 16 and earlier; and SDK and JRE 1.4.2_18 and earlier does not properly enforce context of ZoneInfo objects during deserialization, which allows remote attackers to run untrusted applets and applications in a privileged context, as demonstrated by "deserializing Calendar objects".
Many people don't install Java updates, so it's a perfect attack vector. If you look at control panel statistics, you can see that they are very succesful.
Java exploit is the most successful exploit.