alert dns $HOME_NET any -> any any (msg:"ET MALWARE Sidewinder APT Related Domain in DNS Lookup"; dns.query; content:"maritimepakistan.kpt-pk.net"; nocase; bsize:27; reference:md5,bbc955b1289b4f90fdfb8906606597e9; reference:url,twitter.com/ShadowChasing1/status/1504347312838959106; classtype:domain-c2; sid:2035516; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_03_17, deployment Perimeter, malware_family Sidewinder, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_17;)