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Rev: 1 • Feb 1, 2022, 12:00 PMET HUNTING Double Extension EXE File Downloaded from Discord (Request)
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Double Extension EXE File Downloaded from Discord (Request)"; flow:established,to_server; http.method; content:"GET"; http.host; content:".discordapp.com"; endswith; fast_pattern; http.uri; content:"/attachments/"; startswith; content:".exe"; nocase; endswith; pcre:"/^\/attachments\/[0-9]{18}\/[0-9]{18}\/\w+\.(?:p(?:ptx?|df|ng)|(?:gi|rt)f|docx?|jpe?g|xlsx?)\.exe$/"; classtype:unknown; sid:2035030; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_02_01, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_01, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1036, mitre_technique_name Masquerading;)
Feb 1, 2022, 12:00 PM
Feb 1, 2022, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 8, 2025, 9:34 PM
rules/emerging-hunting.rules