alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE MSIL/Black Hat Worm Server Response"; flow:established,to_client; dsize:10; content:"|7e 62 6c 61 63 6b 20 68 61 74|"; reference:md5,bfa67c998ebedf8ab17e2d8898d0067d; classtype:command-and-control; sid:2033715; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_08_12, deployment Perimeter, malware_family MSIL_Black, performance_impact Low, confidence Medium, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_08_12;)