Rule History

SID: 2033978 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1 • Sep 17, 2021, 12:00 PM

Message:

ET MOBILE_MALWARE Observed APT-C-23 Related Domain (linda-gaytan .website in TLS SNI)

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MOBILE_MALWARE Observed APT-C-23 Related Domain (linda-gaytan .website in TLS SNI)"; flow:established,to_server; tls.sni; content:"linda-gaytan.website"; bsize:20; fast_pattern; reference:md5,af0e580b67938afaeb783b72cf2a1c61; reference:url,blog.cyble.com/2021/09/15/apt-c-23-using-new-variant-of-android-spyware-to-target-users-in-the-middle-east/; reference:url,twitter.com/malwrhunterteam/status/1437498154501480451; classtype:domain-c2; sid:2033978; rev:1; metadata:attack_target Mobile_Client, created_at 2021_09_17, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_17;)

Created:

Sep 17, 2021, 12:00 PM

Updated:

Sep 17, 2021, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 8, 2025, 9:34 PM

Filename:

rules/emerging-mobile_malware.rules