alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN njRAT/Bladabindi Variant (Lime) CnC? Checkin"; flow:established,to_server; dsize:<250; content:"|00|ll"; within:6; content:"TGltZV8"; distance:0; within:30; fast_pattern; pcre:"/^[0-9]{2,3}\x00\x6c\x6c(?P[\x20-\x2f\x30-\x39\x3a-\x40\x5b-\x60\x7b-\x7e][\x20-\x7e]+?[\x20-\x2f\x30-\x39\x3a-\x40\x5b-\x60\x7b-\x7e])(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})(?P=var)[^\r\n]+(?P=var)$/s"; metadata: former_category TROJAN; reference:md5,ce37b5b473377810bc76e0491533b4e7; classtype:trojan-activity; sid:2025136; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, deployment Perimeter, signature_severity Major, created_at 2017_12_06, malware_family njrat, performance_impact Moderate, updated_at 2017_12_06;)

Added 2017-12-06 16:36:39 UTC


Topic revision: r1 - 2017-12-06 - TWikiGuest
 
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