Rule History

alert dns $HOME_NET any -> any any (msg:"ET ATTACK_RESPONSE DNS Query for Observed CVE-2021-44228 Callback Domain (rce .ee)"; dns.query; dotprefix; content:".rce.ee"; nocase; endswith; reference:url,www.fastly.com/blog/new-data-and-insights-into-log4shell-attacks-cve-2021-44228; reference:cve,2021-44228; classtype:domain-c2; sid:2034747; rev:1; metadata:attack_target Client_and_Server, created_at 2021_12_17, cve CVE_2021_44228, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_12_17;)