Versions (3)
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Rev: 2 • Mar 14, 2012, 12:00 PMET DELETED Possible Zeus .ru CnC Domain Generation Algorithm (DGA) Lookup NXDOMAIN Response
alert udp any 53 -> $HOME_NET any (msg:"ET DELETED Possible Zeus .ru CnC Domain Generation Algorithm (DGA) Lookup NXDOMAIN Response"; byte_test:1,&,128,2; byte_test:1,&,1,3; byte_test:1,&,2,3; content:"|02|ru|00|"; fast_pattern:only; pcre:"/[^a-z0-9\-\.][a-z0-9]{32,48}\x02ru\x00\x00/"; threshold:type both, track by_src, count 2, seconds 60; classtype:command-and-control; sid:2014373; rev:2; metadata:created_at 2012_03_14, confidence High, signature_severity Unknown, updated_at 2019_07_26;)
Mar 14, 2012, 12:00 PM
Jul 26, 2019, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-deleted.rules