alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MALWARE PS1/ExfiltracaoBot CnC Checkin"; flow:established,to_server; flowbits:set,ET.ExfiltracaoBot; dsize:<200; pcre:"/^(?:[0-9]{2})\x2f(?:[0-9]{2})\x2f(?:[0-9]{4})\x20(?:[0-9]{2})\x3a(?:[0-9]{2})\x3a(?:[0-9]{2})/"; content:"|20 7c 20|"; within:4; content:"|20 7c 20|Microsoft|20|Windows|20|"; distance:0; fast_pattern; pcre:"/\x20\x7c\x20(?:[0-9]{1,3}\.){3}[0-9]{1,3}[\r\n]$/R"; reference:md5,c517e83c5f8713bce774be8e2cf21753; classtype:command-and-control; sid:2055903; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_09_17, deployment Perimeter, confidence High, signature_severity Critical, updated_at 2024_09_17;)