[100264] <Error> -- [ERRCODE: SC_ERR_INVALID_SIGNATURE(39)] - error parsing signature "alert dns $HOME_NET any -> $EXTERNAL_NET any (msg:"ThreatFox botnet C2 traffic (domain - confidence level: 100%)"; dns_query; content:"anakhaled20.noظ€ip.biz"; depth:22; fast_pattern; isdataat:!1,relative; nocase; reference:url, threatfox.abuse.ch/ioc/1172062/; target:src_ip; metadata: confidence_level 100, first_seen 2023_09_27; classtype:trojan-activity; sid:91172062; rev:1;)" from file /usr/local/etc/suricata/opnsense.rules/abuse.ch.threatfox.rules at line 11335