Rule History

SID: 2068106 • Source: et/open

Versions (2)

Version DetailsCurrent

Rev: 1 • Mar 10, 2026, 12:00 PM

Message:

ET MALWARE Observed LoJax Domain (secao .org in TLS SNI)

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed LoJax Domain (secao .org in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".secao.org"; endswith; fast_pattern; reference:url,web-assets.esetstatic.com/wls/2018/09/ESET-LoJax.pdf; classtype:trojan-activity; sid:2068106; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_03_10, deployment Perimeter, malware_family LoJax, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_03_10;)

Created:

Mar 10, 2026, 12:00 PM

Updated:

Mar 10, 2026, 12:00 PM

DB Created:

Mar 10, 2026, 8:34 PM

DB Updated:

Mar 11, 2026, 9:34 PM

Filename:

rules/emerging-malware.rules