Versions (4)
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Rev: 1 • May 18, 2021, 12:00 PMET HUNTING Possible ELF executable sent when remote host claims to send a Text File
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET HUNTING Possible ELF executable sent when remote host claims to send a Text File"; flow:established,from_server; http.header; content:"Content-Type|3a 20|text/plain"; file.data; content:"|7f 45 4c 46|"; startswith; fast_pattern; isdataat:3000,relative; classtype:bad-unknown; sid:2032973; rev:1; metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2021_05_18, deployment Perimeter, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_05_18;)
May 18, 2021, 12:00 PM
May 18, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 11, 2025, 9:34 PM
rules/emerging-hunting.rules