Rule History

SID: 2033133 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Jun 10, 2021, 12:00 PM

Message:

ET HUNTING Office Doc Retrieving Shortened URL (bit .do)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Office Doc Retrieving Shortened URL (bit .do)"; flow:established,to_server; http.method; content:"GET"; http.user_agent; content:"|3b 20|ms-office|3b 20|"; http.host; content:"bit.do"; bsize:6; fast_pattern; reference:md5,04a303e67b4a2f9f7bb532779aef2c72; classtype:bad-unknown; sid:2033133; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_06_10, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_10;)

Created:

Jun 10, 2021, 12:00 PM

Updated:

Jun 10, 2021, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 11, 2025, 9:34 PM

Filename:

rules/emerging-hunting.rules