alert tcp-pkt $EXTERNAL_NET 1024: -> $HOME_NET any (msg:"ET MALWARE PS1/ExfiltracaoBot CnC Command Inbound (ZIP_FILE)"; flow:established,to_client; flowbits:isset,ET.ExfiltracaoBot; dsize:<100; content:"ZIP_FILE|3a|"; startswith; fast_pattern; reference:md5,c517e83c5f8713bce774be8e2cf21753; classtype:command-and-control; sid:2055904; 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 Medium, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_17;)