Rule History

SID: 2013404 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 3 • Aug 11, 2011, 12:00 PM

Message:

ET MALWARE Suspicious User Agent ksdl_1_0

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Suspicious User Agent ksdl_1_0"; flow:established,to_server; http.user_agent; content:"ksdl_"; startswith; classtype:trojan-activity; sid:2013404; rev:3; metadata:created_at 2011_08_11, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_07;)

Created:

Aug 11, 2011, 12:00 PM

Updated:

Feb 7, 2024, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Nov 10, 2025, 10:34 PM

Filename:

rules/emerging-malware.rules