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


Risk Level 1: Very Low

August 8, 2003
February 13, 2007 12:19:41 PM
Also Known As:
Backdoor.Sdbot.gen [Kaspersky], W32/Sdbot.worm.gen [McAfee]
Systems Affected:

W32.HLLW.Moega is a worm with backdoor capabilities that attempts to spread through the local area network. The worm attempts to open ports 139 and 445, as well as steal sensitive information.

The executable for W32.HLLW.Moega may look similar to the icon for Windows XP's Windows Update executable, Wupdmgr.exe. See step 1 of the "Technical Details" section for an illustration.

Several minor variants of this worm have been found. Some of them may be packed with UPX or PeCompact.

Antivirus Protection Dates

  • Initial Rapid Release version August 8, 2003
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version August 8, 2003
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date August 11, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Kaoru Hayashi

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