#alert udp any 53 -> $HOME_NET any (msg:"ET DELETED Possible Zeus .biz CnC? Domain Generation Algorithm (DGA) Lookup NXDOMAIN Response"; byte_test:1,&,128,2; byte_test:1,&,1,3; byte_test:1,&,2,3; content:"|03|biz|00|"; fast_pattern:only; pcre:"/[^a-z0-9\-\.][a-z0-9]{32,48}\x03biz\x00\x00/"; threshold: type both, track by_src, count 2, seconds 60; classtype:trojan-activity; sid:2014375; rev:2; metadata:created_at 2012_03_14, updated_at 2012_03_14;)

Added 2017-08-07 21:07:46 UTC


##alert udp any 53 -> $HOME_NET any (msg:"ET DELETED Possible Zeus .biz CnC? Domain Generation Algorithm (DGA) Lookup NXDOMAIN Response"; byte_test:1,&,128,2; byte_test:1,&,1,3; byte_test:1,&,2,3; content:"|03|biz|00|"; fast_pattern:only; pcre:"/[^a-z0-9\-\.][a-z0-9]{32,48}\x03biz\x00\x00/"; threshold: type both, track by_src, count 2, seconds 60; classtype:trojan-activity; sid:2014375; rev:2;)

Added 2014-02-05 00:51:00 UTC


alert udp any 53 -> $HOME_NET any (msg:"ET CURRENT_EVENTS Possible Zeus .biz CnC? Domain Generation Algorithm (DGA) Lookup NXDOMAIN Response"; byte_test:1,&,128,2; byte_test:1,&,1,3; byte_test:1,&,2,3; content:"|03|biz|00|"; fast_pattern:only; pcre:"/[^a-z0-9\-\.][a-z0-9]{32,48}\x03biz\x00\x00/"; threshold: type both, track by_src, count 2, seconds 60; classtype:trojan-activity; sid:2014375; rev:1;)

Added 2012-03-14 18:22:12 UTC


Topic revision: r1 - 2017-08-08 - TWikiGuest
 
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