alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Observed APT29 Domain (sgrhf .org .pk) in TLS SNI"; flow:established,to_server; tls.sni; bsize:12; content:"sgrhf.org.pk"; fast_pattern; reference:url,blog.eclecticiq.com/german-embassy-lure-likely-part-of-campaign-against-nato-aligned-ministries-of-foreign-affairs; classtype:domain-c2; sid:2047641; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_08_14, deployment Perimeter, former_category MALWARE, performance_impact Low, confidence High, signature_severity Major, tag APT29, updated_at 2025_04_17, reviewed_at 2025_04_17;)