Versions (5)
Version DetailsCurrent
Rev: 2 • Jul 19, 2019, 12:00 PMET MALWARE Win32/Blacknix CnC Heartbeat
alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Blacknix CnC Heartbeat"; flow:to_server,established; dsize:15; content:"|7c 78 01|"; offset:2; depth:3; pcre:"/^[0-9]{2}\x7cx/"; threshold:type both, track by_src, count 5, seconds 60; reference:md5,b4e95d3ec39cf8c7347ca1c64cfed631; classtype:command-and-control; sid:2027732; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_07_19, deployment Perimeter, malware_family Win32_Blacknix, confidence High, signature_severity Major, tag Blacknix, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)
Jul 19, 2019, 12:00 PM
Jul 26, 2019, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 23, 2025, 9:34 PM
rules/emerging-malware.rules