Rule History

alert dns $HOME_NET any -> any any (msg:"ET ATTACK_RESPONSE DNS Query for Observed CVE-2021-44228 Callback Domain (bingsearchlib .com)"; dns.query; dotprefix; content:".bingsearchlib.com"; nocase; endswith; reference:url,twitter.com/sans_isc/status/1469305954835521539; reference:cve,2021-44228; classtype:domain-c2; sid:2034670; rev:1; metadata:attack_target Client_and_Server, created_at 2021_12_11, cve CVE_2021_44228, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_12_11;)