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SID: 2033430 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1Jul 26, 2021, 12:00 PM

ET HUNTING NOP Sled in HTTP Header Inbound - Possible Exploit Activity

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET HUNTING NOP Sled in HTTP Header Inbound - Possible Exploit Activity"; flow:established,to_server; http.header; content:"|90 90 90 90 90 90 90 90 90 90 90|"; fast_pattern; classtype:bad-unknown; sid:2033430; rev:1; metadata:created_at 2021_07_26, confidence Medium, signature_severity Minor, tag possible_exploitation, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_26;)

Jul 26, 2021, 12:00 PM

Jul 26, 2021, 12:00 PM

Sep 21, 2024, 3:00 AM

Sep 9, 2025, 9:34 PM

rules/emerging-hunting.rules