Versions (4)
Version DetailsCurrent
Rev: 1 • Nov 30, 2020, 12:00 PMET MALWARE Observed Malicious SSL Cert (Lazarus APT MalDoc 2020-11-30)
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (Lazarus APT MalDoc 2020-11-30)"; flow:established,to_client; tls.cert_subject; content:"CN=filestream.download"; nocase; endswith; reference:md5,1e0d96c551ca31a4055491edc17ce2dd; classtype:domain-c2; sid:2031240; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2020_11_30, deployment Perimeter, malware_family Maldoc, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_30, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)
Nov 30, 2020, 12:00 PM
Nov 30, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 15, 2025, 9:36 PM
rules/emerging-malware.rules