From; Sophos Alert System: Name: W32/Kelvir-F Aliases: IM-Worm.Win32.Prex.a Type: Win32 worm Date: 29 March 2005 A virus identity (IDE) file which provides protection is available now from the Sophos website, and will be incorporated into the May 2005 (3.93) release of Sophos Anti-Virus. Customers using EM Library, PureMessage or any of our Sophos small business solutions will be automatically protected at their next scheduled update. At the time of writing, Sophos has received a small number of reports of this worm from the wild. Information about W32/Kelvir-F can be found at: http://www.sophos.com/virusinfo/analyses/w32kelvirf.html W32/Kelvir-F is an instant messaging worm that spreads by sending a message through Windows Messenger to all of an infected user's contacts. W32/Kelvir-F arrives attached to a message that encourages the recipient to visit a web page to download a file. The message text is randomly chosen from the following: hey check this out I almost pee'd my pants <URL> wow, i almost fell off the chair when i saw this <URL> haha i just found the funniest drawing, check it out <URL> wow, this drawing makes you feel like your on some type of drug <URL> crazy, its like a virtual acidtrip or something, check it out <URL> At the time of writing, the file at the URL is named funnyashell.scr and is detected by Sophos's anti-virus products as W32/Rbot-ZU. This IDE file also includes detection for: Troj/Multidr-JM http://www.sophos.com/virusinfo/analyses/trojmultidrjm.html Troj/Multidr-JN http://www.sophos.com/virusinfo/analyses/trojmultidrjn.html Troj/Dloader-KD http://www.sophos.com/virusinfo/analyses/trojdloaderkd.html Troj/Multidr-JK http://www.sophos.com/virusinfo/analyses/trojmultidrjk.html Troj/Agent-CT http://www.sophos.com/virusinfo/analyses/trojagentct.html Troj/Small-DX http://www.sophos.com/virusinfo/analyses/trojsmalldx.html W32/Rbot-ZU http://www.sophos.com/virusinfo/analyses/w32rbotzu.html Download the IDE file from: http://www.sophos.com/downloads/ide/kelvir-f.ide Download all the IDE files available for the current version of Sophos Anti-Virus in a single compressed file. The file is available in two formats: Zip file: http://www.sophos.com/downloads/ide/ides.zip Self-extracting file: http://www.sophos.com/downloads/ide/ides.exe Read about how to use IDE files at http://www.sophos.com/downloads/ide/using.html *********** MIKE"S REPLY SEPARATOR *********** Mike ~ It is a good day if I learned something new. Editor MikesWhatsNews see a sample on my web page http://www3.telus.net/mikebike <mikeswhatsnews-request@xxxxxxxxxxxxx?Subject=subscribe> http://www3.telus.net/mikebike/worm_removal.htm See my Anti-Virus pages http://virusinfo.hackfix.org/index <virusinfo-request@xxxxxxxxxxxxx?Subject=subscribe> A Technical Support Alliance and OWTA Charter Member