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SID: 2023505 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 3Nov 14, 2016, 12:00 PM

ET MALWARE CerberTear Ransomware CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE CerberTear Ransomware CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?hwid="; fast_pattern; pcre:"/^[A-F0-9]{8}$/Ri"; http.header_names; content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; http.connection; content:"Keep-Alive"; nocase; bsize:10; reference:md5,7d181574893ec9cb2795166623f8e531; classtype:command-and-control; sid:2023505; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_11_14, deployment Perimeter, malware_family Ransomware, malware_family CerberTear, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_03, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)

Nov 14, 2016, 12:00 PM

Aug 3, 2020, 12:00 PM

Sep 21, 2024, 3:00 AM

Nov 10, 2025, 10:34 PM

rules/emerging-malware.rules