CA Technologies is reporting:

"We have been recently blogging about many Android malware as the threat landscape has been witnessing an increasing trend in targeting the mobile platforms and today we have received an Android package to our collection and observed that this piece of malware walks an additional mile by having a neat configuration and has a capability to record the telephonic conversation the infected victim makes. In one of our earlier blogs, we have demonstrated how a Trojan logs all the details of incoming/outgoing calls and call duration in a text file. This Trojan is more advanced as it records the conversation itself in “amr” format. Also it has got many other malicious activities that we have seen in many of the earlier malware incidents targeted for Android platform."

Read more about their findings here.