Rule History

SID: 2016846 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 6 • May 14, 2013, 12:00 PM

Message:

ET INFO Possible Firefox Plugin install

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Possible Firefox Plugin install"; flow:to_server,established; http.uri; content:".xpi"; nocase; fast_pattern; endswith; http.user_agent; content:"|20|Firefox/"; reference:url,research.zscaler.com/2012/09/how-to-install-silently-malicious.html; classtype:bad-unknown; sid:2016846; rev:6; metadata:created_at 2013_05_14, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_18;)

Created:

May 14, 2013, 12:00 PM

Updated:

Sep 18, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Nov 17, 2025, 10:34 PM

Filename:

rules/emerging-info.rules