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1. by Hacker. 2004-03-01 16:16:37
Running infected files causes the worm to reconstruct the uninfected host file using saved data. Such reconstructed files will have '~1' appended to the name (ex., infected MSOFFICE.EXE will be accompanied by an uninfected MSOFFI~1.EXE). The worm deletes them as soon as the program stops running so they exist only temporarily.
W32/Klez.e@MM sends itself out using SMTP protocol. It harvests the Windows address book for email addresses.
The virus may save a copy of itself into .RAR archives.
There is a date-activated payload associated with this threat. On the 6th day of March, May, September, or November, the virus may overwrite local and network files containing the following extensions with zeros: .txt, .htm, .html, .wab, .doc, .xls, .jpg, .cpp, .c, .pas, .mpg, .mpeg, .bak, or .mp3.
If the month is January or July, all files may be overwritten.