Rule History

SID: 2026768 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 4 • Nov 13, 2018, 12:00 PM

Message:

ET MALWARE ServHelper RAT CnC Domain Observed in SNI

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE ServHelper RAT CnC Domain Observed in SNI"; flow:established,to_server; tls.sni; content:"arhidsfderm.pw"; endswith; nocase; reference:md5,43e7274b6d42aef8ceae298b67927aec; classtype:command-and-control; sid:2026768; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_11_13, deployment Perimeter, malware_family ServHelper, performance_impact Low, confidence High, signature_severity Major, tag RAT, updated_at 2020_09_16;)

Created:

Nov 13, 2018, 12:00 PM

Updated:

Sep 16, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

May 30, 2025, 12:04 AM

Filename:

rules/emerging-malware.rules