alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN APT28 SEDNIT Variant CnC? Beacon 1"; flow:to_server,established; content:"POST"; http_method; content:".pdf/?"; http_uri; fast_pattern; content:!"Content-Type|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\.pdf\/\?[A-Za-z0-9]+=(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/U"; reference:md5,c2988e3e4f70d5901b234ff1c1363dcc; classtype:trojan-activity; sid:2023912; rev:3; metadata:attack_target Client_Endpoint, created_at 2016_06_09, deployment Perimeter, former_category MALWARE, signature_severity Major, tag c2, updated_at 2020_10_06, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)

Added 2021-06-18 18:19:33 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN APT28 SEDNIT Variant CnC? Beacon 1"; flow:to_server,established; content:"POST"; http_method; content:".pdf/?"; http_uri; fast_pattern; content:!"Content-Type|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\.pdf\/\?[A-Za-z0-9]+=(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/U"; reference:md5,c2988e3e4f70d5901b234ff1c1363dcc; classtype:trojan-activity; sid:2023912; rev:3; metadata:created_at 2016_06_09, former_category MALWARE, updated_at 2020_10_06;)

Added 2020-10-06 19:21:34 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN APT28 SEDNIT Variant CnC? Beacon 1"; flow:to_server,established; content:"POST"; http_method; content:".pdf/?"; http_uri; fast_pattern; content:!"Content-Type|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\.pdf\/\?[A-Za-z0-9]+=(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/U"; reference:md5,c2988e3e4f70d5901b234ff1c1363dcc; classtype:trojan-activity; sid:2023912; rev:3; metadata:created_at 2016_06_09, former_category MALWARE, updated_at 2019_10_07;)

Added 2020-08-05 19:13:12 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN APT28 SEDNIT Variant CnC? Beacon 1"; flow:to_server,established; content:"POST"; http_method; content:".pdf/?"; http_uri; fast_pattern; content:!"Content-Type|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\.pdf\/\?[A-Za-z0-9]+=(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/U"; metadata: former_category MALWARE; reference:md5,c2988e3e4f70d5901b234ff1c1363dcc; classtype:trojan-activity; sid:2023912; rev:3; metadata:created_at 2016_06_09, updated_at 2019_10_07;)

Added 2019-10-08 19:34:43 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN APT28 SEDNIT Variant CnC? Beacon 1"; flow:to_server,established; content:"POST"; http_method; content:".pdf/?"; http_uri; fast_pattern:only; content:!"Content-Type|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\.pdf\/\?[A-Za-z0-9]+=(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/U"; metadata: former_category MALWARE; reference:md5,c2988e3e4f70d5901b234ff1c1363dcc; classtype:trojan-activity; sid:2023912; rev:2; metadata:created_at 2016_06_09, updated_at 2017_02_16;)

Added 2019-09-19 19:26:45 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN APT28 SEDNIT Variant CnC? Beacon 1"; flow:to_server,established; content:"POST"; http_method; content:".pdf/?"; http_uri; fast_pattern:only; content:!"Content-Type|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\.pdf\/\?[A-Za-z0-9]+=(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/U"; reference:md5,c2988e3e4f70d5901b234ff1c1363dcc; classtype:trojan-activity; sid:2023912; rev:2; metadata:created_at 2016_06_09, updated_at 2017_02_16;)

Added 2018-09-13 19:53:28 UTC


Added 2018-09-13 18:01:25 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN APT28 SEDNIT Variant CnC? Beacon 1"; flow:to_server,established; content:"POST"; http_method; content:".pdf/?"; http_uri; fast_pattern:only; content:!"Content-Type|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\.pdf\/\?[A-Za-z0-9]+=(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/U"; reference:md5,c2988e3e4f70d5901b234ff1c1363dcc; classtype:trojan-activity; sid:2023912; rev:2; metadata:created_at 2016_06_09, updated_at 2017_02_16;)

Added 2017-08-07 21:19:09 UTC


alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN APT28 SEDNIT Variant CnC? Beacon 1"; flow:to_server,established; content:"POST"; http_method; content:".pdf/?"; http_uri; fast_pattern:only; content:!"Content-Type|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer|3a|"; http_header; pcre:"/\.pdf\/\?[A-Za-z0-9]+=(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/U"; reference:md5,c2988e3e4f70d5901b234ff1c1363dcc; classtype:trojan-activity; sid:2023912; rev:2;)

Added 2017-02-16 17:05:12 UTC


Topic revision: r1 - 2021-06-18 - TWikiGuest
 
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