##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:trojan-activity; sid:2014373; rev:2;)

Added 2014-02-05 00:50:59 UTC


alert udp any 53 -> $HOME_NET any (msg:"ET CURRENT_EVENTS 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:trojan-activity; sid:2014373; rev:1;)

Added 2012-03-14 18:18:54 UTC


Topic revision: r1 - 2014-02-05 - TWikiGuest
 
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