alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET TROJAN ELF/Emptiness v1 UDP Flood Command Inbound"; flow:established,from_server; content:".udp|20|"; depth:5; fast_pattern; pcre:"/^((?:\d{1,3}\.){3}\d{1,3}|((?:https?\x3a\/\/)?[a-z0-9\-]{1,30}\.){1,8}[a-z]{1,8})/Ri"; metadata: former_category TROJAN; reference:url,; classtype:trojan-activity; sid:2027837; rev:2; metadata:affected_product Linux, deployment Perimeter, tag DDoS?, signature_severity Major, created_at 2019_08_09, malware_family Emptiness, performance_impact Low, updated_at 2019_08_09;)

Added 2019-08-09 17:52:27 UTC

Topic revision: r1 - 2019-08-09 - TWikiGuest
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