Rule History

SID: 2020179 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 4 • Jan 13, 2015, 12:00 PM

Message:

ET MALWARE Brontok User-Agent Detected (Rivest)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Brontok User-Agent Detected (Rivest)"; flow:established,to_server; http.user_agent; content:"Rivest"; depth:6; endswith; nocase; reference:md5,c83b55ab56f3deb60858cb25d6ded8c4; classtype:trojan-activity; sid:2020179; rev:4; metadata:created_at 2015_01_13, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_14;)

Created:

Jan 13, 2015, 12:00 PM

Updated:

Oct 14, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Oct 14, 2025, 9:34 PM

Filename:

rules/emerging-malware.rules