W32.Netsky.C is a mass-mailing worm that uses its own SMTP engine to send itself to the email addresses it finds when scanning hard drives and mapped drives. This worm also searches drives C through Y for the folder names containing "Shar" and then copies itself to those folders.
The Subject, Body, and email attachment vary.
- Symantec Consumer products that support Worm Blocking functionality automatically detect this threat as it attempts to spread.
- Rapid Release virus definitions, version 2/24/04 rev 32 (60224af or 20040224.032) and greater, detect this threat.
Symantec Security Response has received an additional W32.Netsky.C@mm sample which is ASPacked. Response has seen no customer submissions of this minor variant at this time. Virus definitions of version 2/25/2004 rev 19 (60225s) (20040225.019) or greater are required to detect this variation.
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.