alert dns $HOME_NET any -> any any (msg:"ET DELETED DNS Lookup of Twitter m28sx Worm"; dns.query; content:"gdfgdfgdgdfgdfg.in.ua"; fast_pattern; nocase; bsize:21; reference:url,isc.sans.edu/diary.html?storyid=10297; classtype:trojan-activity; sid:2012210; rev:3; metadata:created_at 2011_01_21, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_15;)