Hi,
it has Backdoor functions..
where exactly was the trojan found (full path and filename from avast'S report/logfile
you should read here:
SDBOT-Infoon what it does, and how to remove it..
if you have sensitive/private data on your PC, AND!! the trojan was active (depends on the path where it was found)
you should
- thoroughly scan your PC with avast and other scanners, e.g. Trendmicro, RAV and KAV
- secure your system, change passwords and think about setting up the PC completely new, cause your system might be compromised