#alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET TROJAN ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Ransomware CnC?)"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|09 00 a7 90 ac fd cd 02 3c 0d|"; within:35; fast_pattern; content:"|55 04 0a|"; distance:0; content:"|13|Default Company Ltd"; distance:1; within:20; reference:url,sslbl.abuse.ch; classtype:trojan-activity; sid:2020689; rev:2; metadata:attack_target Client_Endpoint, created_at 2015_03_13, deployment Perimeter, former_category MALWARE, signature_severity Major, tag SSL_Malicious_Cert, tag Ransomware, updated_at 2016_07_01, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)

Added 2021-10-04 19:24:41 UTC


#alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET TROJAN ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Ransomware CnC?)"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|09 00 a7 90 ac fd cd 02 3c 0d|"; within:35; fast_pattern; content:"|55 04 0a|"; distance:0; content:"|13|Default Company Ltd"; distance:1; within:20; reference:url,sslbl.abuse.ch; classtype:trojan-activity; sid:2020689; rev:2; metadata:attack_target Client_Endpoint, created_at 2015_03_13, deployment Perimeter, former_category MALWARE, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2016_07_01;)

Added 2020-08-05 19:10:59 UTC


#alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET TROJAN ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Ransomware CnC?)"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|09 00 a7 90 ac fd cd 02 3c 0d|"; within:35; fast_pattern; content:"|55 04 0a|"; distance:0; content:"|13|Default Company Ltd"; distance:1; within:20; metadata: former_category MALWARE; reference:url,sslbl.abuse.ch; classtype:trojan-activity; sid:2020689; rev:2; metadata:attack_target Client_Endpoint, deployment Perimeter, tag SSL_Malicious_Cert, signature_severity Major, created_at 2015_03_13, updated_at 2016_07_01;)

Added 2020-02-21 18:10:59 UTC


alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET TROJAN ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Ransomware CnC?)"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|09 00 a7 90 ac fd cd 02 3c 0d|"; within:35; fast_pattern; content:"|55 04 0a|"; distance:0; content:"|13|Default Company Ltd"; distance:1; within:20; metadata: former_category MALWARE; reference:url,sslbl.abuse.ch; classtype:trojan-activity; sid:2020689; rev:2; metadata:attack_target Client_Endpoint, deployment Perimeter, tag SSL_Malicious_Cert, signature_severity Major, created_at 2015_03_13, updated_at 2016_07_01;)

Added 2019-09-19 19:26:14 UTC


alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET TROJAN ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Ransomware CnC?)"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|09 00 a7 90 ac fd cd 02 3c 0d|"; within:35; fast_pattern; content:"|55 04 0a|"; distance:0; content:"|13|Default Company Ltd"; distance:1; within:20; reference:url,sslbl.abuse.ch; classtype:trojan-activity; sid:2020689; rev:2; metadata:attack_target Client_Endpoint, deployment Perimeter, tag SSL_Malicious_Cert, signature_severity Major, created_at 2015_03_13, updated_at 2016_07_01;)

Added 2017-08-07 21:15:14 UTC


alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET TROJAN ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Ransomware CnC?)"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|09 00 a7 90 ac fd cd 02 3c 0d|"; within:35; fast_pattern; content:"|55 04 0a|"; distance:0; content:"|13|Default Company Ltd"; distance:1; within:20; reference:url,sslbl.abuse.ch; classtype:trojan-activity; sid:2020689; rev:2;)

Added 2015-03-13 19:35:10 UTC


Topic revision: r1 - 2021-10-04 - TWikiGuest
 
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