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SID: 2034282 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1Oct 28, 2021, 12:00 PM

ET MALWARE Observed CloudAtlas APT Related Domain (checklicensekey .com in TLS SNI)

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed CloudAtlas APT Related Domain (checklicensekey .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"checklicensekey.com"; bsize:19; fast_pattern; reference:url,twitter.com/h2jazi/status/1453748348964548617; reference:md5,1060678d61ea5152283be60df2472b6f; classtype:domain-c2; sid:2034282; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_10_28, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_28, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)

Oct 28, 2021, 12:00 PM

Oct 28, 2021, 12:00 PM

Sep 21, 2024, 3:00 AM

Sep 8, 2025, 9:34 PM

rules/emerging-malware.rules