As you can see, Hybris is a well known worm
http://www.symantec.com/avcenter/venc/data/w95.hybris.gen.html http://vil.mcafee.com/dispVirus.asp?virus_k=98873& http://www.f-secure.com/v-descs/hybris.shtml http://www.sophos.com/virusinfo/analyses/w32hybrisa.html http://www.pandasoftware.es/library/gusano/W32Hybris_EN_1.htm