If you haven't already heard (from IDG). It looks like your standard .pif, .scr, .exe, .com, .bat worm. I haven't run into it yet. (surprisingly since I seem to be a magnet for these things): ---- A new worm called "Gokar" began to spread across the Internet Thursday via e-mail, the chat program mIRC and the Web, according to a trio of antivirus firms. The worm is not destructive and has not yet infected many systems, but as with any mass-mailer worm, could become a nuisance as unsuspecting users spread it. Like other mass-mailing worms such as Anna Kournikova or Badtrans, Gokar spreads through Microsoft Corp.'s Outlook and Outlook Express e-mail clients when a user clicks on an attachment sent with the infected message, according to antivirus firms Symantec Corp., F-Secure Corp. and Trend Micro Inc. Infected e-mail arrives in user inboxes with dozens of combinations of different subject lines, body messages and filenames, though each attachment will end with the .PIF, .SCR, .EXE., .COM or .BAT extensions, the companies said. When the attachment is double-clicked, the worm installs a file called Karen.exe on the infected system and mails itself to all addresses listed in the computer's address book. The worm then runs every time the infected computer is booted up. Whether a system is infected or not can be determined by searching for the Karen.exe file. The worm also uses the chat program mIRC (Internet Relay Chat), the companies said. Gokar searches the infected PC for the mIRC application, and if it finds it, attempts to infect IRC users in the same discussion, or channel, as the infected system whenever the application is started, according to Trend Micro. Lastly, if an infected system is running Microsoft's IIS (Internet Information Services) Web server software, the worm will modify the default Web page on the system and offer users visiting the site a chance to download the worm, according to F-Secure. An infected Web site will be changed to display the text "We are Forever" and point users to a link to download a file called Web.exe, which contains the Gokar worm, according to Symantec.
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