The worm (W32/Gruel-D) poses as a critical security patch from Microsoft which arrives with the email subject line 'Microsoft Windows Critical Update' and claims to include patches for the latest security vulnerabilities. However, if the attached file is opened, a fake message box can appear berating the Windows operating system in a lengthy tirade. Insults include: 'Windows sucks...Windows has always sucked...It's a scam and Capitalism Sucks! Communism Sucks'.
Screenshot link:
http://www.sophos.com/virusinfo/articles/gruel.html
Screenshot link:
http://www.sophos.com/virusinfo/articles/gruel.html