#alert tls $EXTERNAL_NET [443,4443] -> $HOME_NET any (msg:"ET CURRENT_EVENTS Possible Dyre SSL Cert (non-ASCII) Jul 21 2015"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|02 09 00|"; distance:17; within:3; content:"|06 03 55 04 06 13 02|"; distance:0; pcre:"/^[A-Z]{2}[01]/R"; content:"|30 09 06 03 55 04 08 0c 02|"; distance:1; within:9; fast_pattern; pcre:"/^[A-Z]{2}[01]/Rs"; content:!"|06 03 55 04 0b|"; distance:0; content:"|06 03 55 04 07 0c|"; within:10; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])/Rs"; content:"|06 03 55 04 0a 0c|"; distance:0; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])/Rs"; content:"|06 03 55 04 03 0c|"; distance:0; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])(?P.{10,120}?[01]).+?\x55\x04\x03.{2}(?P=var)/Rs"; classtype:trojan-activity; sid:2021586; rev:3; metadata:attack_target Client_Endpoint, created_at 2015_08_04, deployment Perimeter, former_category CURRENT_EVENTS, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2016_07_01;)

Added 2021-09-21 20:00:17 UTC


#alert tls $EXTERNAL_NET [443,4443] -> $HOME_NET any (msg:"ET CURRENT_EVENTS Possible Dyre SSL Cert (non-ASCII) Jul 21 2015"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|02 09 00|"; distance:17; within:3; content:"|06 03 55 04 06 13 02|"; distance:0; pcre:"/^[A-Z]{2}[01]/R"; content:"|30 09 06 03 55 04 08 0c 02|"; distance:1; within:9; fast_pattern; pcre:"/^[A-Z]{2}[01]/Rs"; content:!"|06 03 55 04 0b|"; distance:0; content:"|06 03 55 04 07 0c|"; within:10; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])/Rs"; content:"|06 03 55 04 0a 0c|"; distance:0; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])/Rs"; content:"|06 03 55 04 03 0c|"; distance:0; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])(?P.{10,120}?[01]).+?\x55\x04\x03.{2}(?P=var)/Rs"; classtype:trojan-activity; sid:2021586; rev:3; metadata:attack_target Client_Endpoint, created_at 2015_08_03, deployment Perimeter, former_category CURRENT_EVENTS, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2016_07_01;)

Added 2020-08-05 19:11:30 UTC


#alert tls $EXTERNAL_NET [443,4443] -> $HOME_NET any (msg:"ET CURRENT_EVENTS Possible Dyre SSL Cert (non-ASCII) Jul 21 2015"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|02 09 00|"; distance:17; within:3; content:"|06 03 55 04 06 13 02|"; distance:0; pcre:"/^[A-Z]{2}[01]/R"; content:"|30 09 06 03 55 04 08 0c 02|"; distance:1; within:9; fast_pattern; pcre:"/^[A-Z]{2}[01]/Rs"; content:!"|06 03 55 04 0b|"; distance:0; content:"|06 03 55 04 07 0c|"; within:10; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])/Rs"; content:"|06 03 55 04 0a 0c|"; distance:0; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])/Rs"; content:"|06 03 55 04 03 0c|"; distance:0; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])(?P.{10,120}?[01]).+?\x55\x04\x03.{2}(?P=var)/Rs"; metadata: former_category CURRENT_EVENTS; classtype:trojan-activity; sid:2021586; rev:3; metadata:attack_target Client_Endpoint, deployment Perimeter, tag SSL_Malicious_Cert, signature_severity Major, created_at 2015_08_03, updated_at 2016_07_01;)

Added 2019-08-15 20:33:32 UTC


alert tls $EXTERNAL_NET [443,4443] -> $HOME_NET any (msg:"ET CURRENT_EVENTS Possible Dyre SSL Cert (non-ASCII) Jul 21 2015"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|02 09 00|"; distance:17; within:3; content:"|06 03 55 04 06 13 02|"; distance:0; pcre:"/^[A-Z]{2}[01]/R"; content:"|30 09 06 03 55 04 08 0c 02|"; distance:1; within:9; fast_pattern; pcre:"/^[A-Z]{2}[01]/Rs"; content:!"|06 03 55 04 0b|"; distance:0; content:"|06 03 55 04 07 0c|"; within:10; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])/Rs"; content:"|06 03 55 04 0a 0c|"; distance:0; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])/Rs"; content:"|06 03 55 04 03 0c|"; distance:0; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])(?P.{10,120}?[01]).+?\x55\x04\x03.{2}(?P=var)/Rs"; classtype:trojan-activity; sid:2021586; rev:3; metadata:attack_target Client_Endpoint, deployment Perimeter, tag SSL_Malicious_Cert, signature_severity Major, created_at 2015_08_03, updated_at 2016_07_01;)

Added 2017-08-07 21:16:17 UTC


alert tls $EXTERNAL_NET [443,4443] -> $HOME_NET any (msg:"ET CURRENT_EVENTS Possible Dyre SSL Cert (non-ASCII) Jul 21 2015"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|02 09 00|"; distance:17; within:3; content:"|06 03 55 04 06 13 02|"; distance:0; pcre:"/^[A-Z]{2}[01]/R"; content:"|30 09 06 03 55 04 08 0c 02|"; distance:1; within:9; fast_pattern; pcre:"/^[A-Z]{2}[01]/Rs"; content:!"|06 03 55 04 0b|"; distance:0; content:"|06 03 55 04 07 0c|"; within:10; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])/Rs"; content:"|06 03 55 04 0a 0c|"; distance:0; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])/Rs"; content:"|06 03 55 04 03 0c|"; distance:0; byte_test:1,>,9,0,relative; byte_test:1,<,121,0,relative; pcre:"/^.{1}(?=[\x20-\x7e]{0,8}?[^\x20-\x7e])(?P.{10,120}?[01]).+?\x55\x04\x03.{2}(?P=var)/Rs"; classtype:trojan-activity; sid:2021586; rev:3;)

Added 2015-08-03 18:02:13 UTC


Topic revision: r1 - 2021-09-22 - TWikiGuest
 
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