alert dns $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Golang/Webbfustator DNS Tunneling Activity"; dns.query; content:"ReplaceWithRandom."; startswith; fast_pattern; threshold:type both, count 2, seconds 20, track by_src; reference:md5,de49baada80d7b2aba474251ac937236; reference:url,www.securonix.com/blog/golang-attack-campaign-gowebbfuscator-leverages-office-macros-and-james-webb-images-to-infect-systems/; classtype:trojan-activity; sid:2038898; rev:2; metadata:created_at 2022_09_19, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_26;)