Rule History

SID: 2016366 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 5 • Feb 8, 2013, 12:00 PM

Message:

ET MALWARE Umbra/Multibot Loader User-Agent (umbra)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Umbra/Multibot Loader User-Agent (umbra)"; flow:established,to_server; http.user_agent; bsize:5; content:"umbra"; reference:url,malware.dontneedcoffee.com/2013/02/inside-multi-botnet-ver4-c-panel.html; classtype:trojan-activity; sid:2016366; rev:5; metadata:created_at 2013_02_08, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_10;)

Created:

Feb 8, 2013, 12:00 PM

Updated:

Mar 10, 2024, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Oct 6, 2025, 4:34 PM

Filename:

rules/emerging-malware.rules