alert icmp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Trickbot Anchor ICMP Request"; itype:8; content:"hanc"; depth:4; pcre:"/^[a-f0-9]+\x08\x00$/Rs"; reference:md5,3690c361f7f2bdb1d1aed67c142bb90b; classtype:trojan-activity; sid:2031159; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_11_02, deployment Perimeter, malware_family TrickBot, malware_family Anchor, confidence High, signature_severity Major, updated_at 2020_11_02;)