1. Symantec/
  2. Security Response/
  3. W32.Feebs


Risk Level 2: Low

January 7, 2006
May 17, 2007 10:00:37 PM
Infection Length:
Systems Affected:
W32.Feebs is a detection for a family of mass-mailing worm that also spreads through file-sharing networks and lowers security settings on the compromised computer. The worm may also send confidential information to a remote attacker via FTP.

The worm variant arrives as an email attachment with an .HTA extension. Once the .HTA file is viewed, a malicious JavaScript then drops or downloads a copy of the worm executable.

Antivirus Protection Dates

  • Initial Rapid Release version January 8, 2006
  • Latest Rapid Release version March 23, 2017 revision 037
  • Initial Daily Certified version January 8, 2006
  • Latest Daily Certified version March 23, 2017 revision 041
  • Initial Weekly Certified release date January 11, 2006
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Kaoru Hayashi

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STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
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