Rule History

SID: 2020888 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 4 • Apr 10, 2015, 12:00 PM

Message:

ET INFO invalid.cab domain in SNI

Rule:

alert tls $HOME_NET any -> 195.22.26.192/26 443 (msg:"ET INFO invalid.cab domain in SNI"; flow:established,to_server; tls.sni; content:"invalid.cab"; fast_pattern; flowbits:set,ET.invalid.cab; flowbits:noalert; classtype:misc-activity; sid:2020888; rev:4; metadata:created_at 2015_04_10, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_24;)

Created:

Apr 10, 2015, 12:00 PM

Updated:

Feb 24, 2022, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Nov 27, 2025, 9:34 PM

Filename:

rules/emerging-info.rules