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SID: 2029321 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1Jan 24, 2020, 12:00 PM

ET MALWARE Mermaid Ransomware Variant CnC Activity M3

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Mermaid Ransomware Variant CnC Activity M3"; flow:established,to_server; http.method; content:"GET"; http.uri; bsize:>60; content:".php?"; content:"=ID:_"; distance:0; content:"___Key|3a|___"; distance:0; fast_pattern; http.header_names; bsize:22; content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; classtype:command-and-control; sid:2029321; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_24, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_01_24, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)

Jan 24, 2020, 12:00 PM

Jan 24, 2020, 12:00 PM

Sep 21, 2024, 3:00 AM

Sep 22, 2025, 9:34 PM

rules/emerging-malware.rules