W32.Mydoom.M@mm is a mass-mailing worm that drops and executes a backdoor, detected as Backdoor.Zincite.A
, that listens on TCP port 1034. The worm uses its own SMTP engine to send itself to email addresses it finds on the infected computer.
The email contains a spoofed From address, and the Subject and Body text will vary. The attachment name will also vary.
- Symantec Consumer and Enterprise products that support Worm Blocking functionality automatically detect this threat as it attempts to spread.
- Due to a decreased rate of submissions, Symantec Security Response has downgraded W32.Mydoom.M@mm from a Category 4 to a Category 3 as of July 28, 2004.
- Due to a decreased rate of submissions, Symantec Security Response has downgraded W32.Mydoom.M@mm from a Category 3 to a Category 2 as of October 27, 2004.
W32.Mydoom.M@mm is packed with UPX.
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