Rule History

SID: 2036303 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 2 • Apr 22, 2022, 12:00 PM

Message:

ET HUNTING Terse Unencrypted Request for Google - Likely Connectivity Check

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET 80 (msg:"ET HUNTING Terse Unencrypted Request for Google - Likely Connectivity Check"; flow:established,to_server; http.request_line; content:"GET / "; startswith; http.host; dotprefix; content:".google.com"; fast_pattern; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; content:!"|0d 0a|User-Agent|0d 0a|"; content:!"|0d 0a|Accept"; reference:md5,7ca63bab6e05704d2c7b48461e563f4c; classtype:trojan-activity; sid:2036303; rev:2; metadata:created_at 2022_04_22, performance_impact Moderate, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_22;)

Created:

Apr 22, 2022, 12:00 PM

Updated:

Apr 22, 2022, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 3, 2025, 8:34 PM

Filename:

rules/emerging-hunting.rules