Rule History

SID: 2038591 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Aug 22, 2022, 12:00 PM

Message:

ET HUNTING Possible Obfuscator io JavaScript Obfuscation Exclusion

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Possible Obfuscator io JavaScript Obfuscation Exclusion"; flow:established,to_server; flowbits:set,ET.obfuscator_io_exclusion; flowbits:noalert; http.uri; content:"/_sec/cp_challenge/sec-cpt-"; startswith; fast_pattern; content:"-"; distance:1; within:1; content:".js"; endswith; distance:1; within:3; reference:url,obfuscator.io; classtype:trojan-activity; sid:2038591; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_08_22, deployment Perimeter, confidence Low, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_22;)

Created:

Aug 22, 2022, 12:00 PM

Updated:

Aug 22, 2022, 12:00 PM

DB Created:

Aug 22, 2022, 10:00 PM

DB Updated:

Sep 1, 2025, 8:35 PM

Filename:

rules/emerging-hunting.rules