alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET TROJAN DNSpionage Commands Embedded in Webpage Inbound"; flow:established,from_server; content:"200"; http_stat_code; file_data; content:"|3c 21 2d 2d|eyJjIjogI"; fast_pattern; content:"|3c 21 2d 2d|"; pcre:"/^(?:[A-Z0-9+/]{4})*(?:[A-Z0-9+/]{2}==|[A-Z0-9+/]{3}=|[A-Z0-9+/]{4})/R"; metadata: former_category TROJAN; reference:url,blog.talosintelligence.com/2018/11/dnspionage-campaign-targets-middle-east.html; classtype:trojan-activity; sid:2026672; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, deployment Perimeter, tag DNSpionage, signature_severity Major, created_at 2018_11_28, performance_impact Low, updated_at 2018_11_28;)

Added 2018-11-28 18:39:53 UTC


Topic revision: r1 - 2018-11-28 - TWikiGuest
 
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