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Rev: 1 • Jan 4, 2023, 12:00 PMET MALWARE Observed PyPI Malicious Library Payload Delivery Domain (h4ck .cfd in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed PyPI Malicious Library Payload Delivery Domain (h4ck .cfd in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".h4ck.cfd"; endswith; fast_pattern; reference:url,www.bleepingcomputer.com/news/security/pytorch-discloses-malicious-dependency-chain-compromise-over-holidays/; reference:url,cybermon.uk/posts/pytorch_malicious_dependency_chain_compromise/; classtype:trojan-activity; sid:2043205; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_01_04, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_01_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
Jan 4, 2023, 12:00 PM
Jan 4, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 26, 2025, 9:34 PM
rules/emerging-malware.rules