Versions (4)
Version DetailsCurrent
Rev: 1 • Feb 16, 2023, 12:00 PMET HUNTING Observed Meterpreter Style Request (GET)
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Observed Meterpreter Style Request (GET)"; flow:established,to_server; urilen:>70; http.method; content:"GET"; http.header_names; content:"|0d 0a|Host|0d 0a|Cache-Control|0d 0a 0d 0a|"; bsize:25; fast_pattern; http.uri; content:!".php"; content:!".htm"; content:!".asp"; content:!"?"; content:!"&"; content:!"="; http.host; pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/"; reference:md5,d765cf358376604b90eba4f5dccb4cea; classtype:bad-unknown; sid:2044228; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_02_16, deployment Perimeter, deployment SSLDecrypt, performance_impact Significant, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_16; target:src_ip;)
Feb 16, 2023, 12:00 PM
Feb 16, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 25, 2025, 9:35 PM
rules/emerging-hunting.rules