Summary

On January 25th a new backdoor known as Sadhound has been spammed in emails with subject 'I Miss You'. Sadhound is not a worm and does not spread by itself.

Additional Details

Sadhound drops a text file in Windows Temp folder and opens it with Notepad. The text looks as follow:

 There's no
 special reason
 for sending
 this to you,
 except that...

 I was feeling
 a little lonely,
 and when I asked myself
 what I seemed to be
     missing the most,
     the answer
     turned out to be
         ...you.

 I Miss You

F-Secure Anti-Virus detects Sadhound with the existing updates as a dropper.

[Analysis: Katrin Tocheva, Gergely Erdelyi F-Secure Corp.; January 27th, 2003]