1. Symantec/
  2. Security Response/
  3. W95.Dupator.1503


Risk Level 1: Very Low

November 3, 1999
February 13, 2007 11:41:37 AM
Also Known As:
W32/Dupator [McAfee], Win95.Dupator.1503 [KAV], PE_DUPATOR.1503 [Trend], Mid/W95/Dupator [Sophos]
Systems Affected:

W95.Dupator.1503 is a virus that appends itself to Windows PE files. It also creates an infected copy of Kernel32.dll in the Windows folder.

NOTE: W95.Dupator.1503 has been known to infect variants of W32.Opaserv.Worm. In files where W95.Dupator.1503 cannot be repaired, the files should be deleted.

What are Portable Executable (PE) files?
PE files are files that are portable across all Microsoft 32-bit operating systems. The same PE-format executable can be executed on any version of Windows 95, 98, Me, NT, 2000, and XP. All PE files are executable, but not all executable files are portable.

A common example of a PE file is a screen saver (.scr) file.

Antivirus Protection Dates

  • Initial Rapid Release version November 3, 1999
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version November 3, 1999
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date November 3, 1999
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Douglas Knowles

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