Troj/Small-ACG is a downloader Trojan for the Windows platform.
Troj/Small-ACG includes functionality to download, install and run new software.
When Troj/Small-ACG is installed the following files are created:
W32/Fasong-I is a worm for the Windows platform.
W32/Fasong-I will search the list of running processes, and may create copies of itself in random locations, possibly including network shares, using the names of active processes it finds.
W32/Fasong-I may also drop a DLL component into a random location with a random name. This DLL is detected as W32/Fasong-H.
W32/Fasong-I contains an SMTP engine which it may use to send itself by email.