The following system changes may indicate the presence of this malware:
You may have received an attached file in an email that has the following, or a similar, file name:
TrojanDownloader:Win32/Dofoil.D is a trojan that may arrive as a spammed email attachment. It downloads arbitrary files from a remote server.
What to do now
To detect and remove this threat and other malicious software that may be installed on your computer, run a full-system scan with an appropriate, up-to-date, security solution. The following Microsoft products detect and remove this threat: