Rule History

SID: 2051804 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1 • Mar 26, 2024, 12:00 PM

Message:

ET MOBILE_MALWARE Android/ProxyLib Related Domain (nsignal .net) in TLS SNI

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MOBILE_MALWARE Android/ProxyLib Related Domain (nsignal .net) in TLS SNI"; flow:established,to_server; tls.sni; bsize:11; content:"nsignal.net"; fast_pattern; reference:url,www.humansecurity.com/learn/blog/satori-threat-intelligence-alert-proxylib-and-lumiapps-transform-mobile-devices-into-proxy-nodes; classtype:bad-unknown; sid:2051804; rev:1; metadata:affected_product Android, attack_target Mobile_Client, created_at 2024_03_26, deployment Perimeter, malware_family ProxyLib, performance_impact Low, confidence High, signature_severity Major, tag ProxyLib, updated_at 2024_03_26, reviewed_at 2025_07_14;)

Created:

Mar 26, 2024, 12:00 PM

Updated:

Mar 26, 2024, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Jul 14, 2025, 9:34 PM

Filename:

rules/emerging-mobile_malware.rules