Threat Description



Category: Malware
Type: Backdoor
Platform: W32
Aliases: Sadhound


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.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.


More information on scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

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Technical 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  I Miss You  

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

Technical Details:Katrin Tocheva, Gergely Erdelyi F-Secure Corp.; January 27th, 2003


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