We recently received a file (from CERT) for analysis. We found that the file was a Trojan that opens a back door on a compromised computer and listens for commands on port 7777. This by itself is not very unusual, but what surprised us was that this file was being distributed by a well known battery manufacturer as part of a USB charger-monitoring software package.

The rest is here:
Trojan Found in USB Battery Charger Software