W32.Frethem.O@mm is a worm, and is a variant of W32.Frethem.B@mm
. It uses its own SMTP engine to send itself to email addresses that it finds in the Microsoft Windows Address Book and in .dbx, .wab, .mbx, .eml, and .mdb files. The email message arrives with the following characteristics:
Subject: Re: Your password!
Decrypt-password.exe and Password.txt
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