Trojan installed through Powerpoint

IDEFENSE said a Powerpoint Merry Christmas message has been modified to install a Trojan on PCs.

Emails with the following subject and attachment could be a security risk:

Subject: Merry Christmas to our hero sons and daughters! Attachment: Christmas+Blessing-4.ppt

Ken Dunham, of iDefense, said the characteristics are similar to other Microsoft exploit attacks during this year. He said a remote website used in the attack lives on a server in China.

Two files are silently, installed, msupdate.dll and sdfsc.dll, he said.