alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Wacatac.B Loader CnC Checkin"; flow:established,to_server; content:"REELIP>"; distance:0; fast_pattern; content:"SETMAC>"; distance:0; content:"SETCOMPUTERNAME>"; distance:0; content:"SETPARENT>"; distance:0; content:"SETOS>"; distance:0; content:"SETDATE>"; distance:0; content:"CLIENTID>"; distance:0; content:"CHECKVERSION>"; distance:0; reference:md5,f787cefe0e82f5605fb91d6987781a6b; classtype:trojan-activity; sid:2036564; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_05_09, deployment Perimeter, malware_family Win32_Wacatac_B, confidence High, signature_severity Major, tag Coinminer, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_05_09;)