alert tcp $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MALWARE PingPull Related Activity (Outbound)"; content:"|00 00 00 5b|PROJECT_"; fast_pattern; startswith; reference:url,unit42.paloaltonetworks.com/pingpull-gallium/; reference:md5,9ad380e7b6d9c83b88ed1b307107912e; classtype:trojan-activity; sid:2036971; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_06_13, deployment Perimeter, malware_family Gallium, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_13;)