1. Symantec/
  2. Security Response/
  3. W32.HLLW.Heycheck


Risk Level 1: Very Low

March 5, 2004
February 13, 2007 12:14:29 PM
Systems Affected:

W32.HLLW.Heycheck is a worm that attempts to spread using Microsoft Instant Messenger and peer-to-peer file sharing networks. This worm acts as a Web server on an infected computer, accepting connections on port 80 and sending a link to the worm in response to HTTP requests.

The existence of the file C:\Card.exe is an indication of possible infection.

Antivirus Protection Dates

  • Initial Rapid Release version March 8, 2004
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version March 8, 2004
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date March 10, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Heather Shannon

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2016 Internet Security Threat Report, Volume 21
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