Rule History

SID: 2034581 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Dec 3, 2021, 12:00 PM

Message:

ET HUNTING Terse Request for .txt - Likely Hostile

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Terse Request for .txt - Likely Hostile"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".txt"; endswith; bsize:6; fast_pattern; http.header_names; content:!"Referer"; classtype:bad-unknown; sid:2034581; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_12_03, deployment Perimeter, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_12_03;)

Created:

Dec 3, 2021, 12:00 PM

Updated:

Dec 3, 2021, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 8, 2025, 9:34 PM

Filename:

rules/emerging-hunting.rules